@font-face {
  font-family: "Noto Serif TC Local";
  src: url("fonts/NotoSerifTC-VariableFont_wght.ttf") format("truetype");
  font-display: swap;
  font-weight: 100 900;
}

:root {
  color-scheme: dark;
  --midnight: #272757;
  --midnight-deep: #171735;
  --midnight-soft: #34346f;
  --paper: #fbf7ef;
  --paper-strong: #fffdf8;
  --paper-muted: #eee7db;
  --ink: #242342;
  --ink-soft: #66637c;
  --orange: #e87b2c;
  --orange-deep: #bd571b;
  --orange-pale: #fff0dc;
  --blue: #6176cf;
  --green: #249968;
  --red: #c94b52;
  --line: rgba(255, 255, 255, .16);
  --shadow: 0 24px 70px rgba(6, 8, 31, .3);
}

* { box-sizing: border-box; }

html {
  min-height: 100%;
  scroll-behavior: smooth;
  background: var(--midnight-deep);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--paper);
  background:
    radial-gradient(circle at 10% 8%, rgba(105, 112, 211, .25), transparent 30rem),
    radial-gradient(circle at 92% 30%, rgba(232, 123, 44, .14), transparent 34rem),
    linear-gradient(145deg, #1d1d43 0%, var(--midnight) 42%, #22224c 100%);
  font-family: Georgia, "Times New Roman", "Noto Serif TC Local", serif;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: .28;
  background-image:
    radial-gradient(circle, rgba(255,255,255,.8) 0 1px, transparent 1.5px),
    radial-gradient(circle, rgba(255,255,255,.45) 0 1px, transparent 1.5px);
  background-position: 0 0, 31px 47px;
  background-size: 91px 91px, 133px 133px;
  pointer-events: none;
}

button,
input,
textarea { font: inherit; }

button,
a { -webkit-tap-highlight-color: transparent; }

button { color: inherit; }

[hidden] { display: none !important; }

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 9999;
  padding: 10px 14px;
  border-radius: 10px;
  color: var(--midnight);
  background: var(--paper);
  transform: translateY(-150%);
}

.skip-link:focus { transform: none; }

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
}

.edmund-system-header {
  color-scheme: light;
  background: rgba(251, 247, 239, .95) !important;
  border-bottom-color: rgba(39, 39, 87, .16) !important;
}

.app-shell {
  width: min(1480px, calc(100% - 36px));
  margin: 0 auto;
  padding: 38px 0 88px;
}

.view { animation: view-in .32s ease both; }

@keyframes view-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.glass-panel {
  border: 1px solid var(--line);
  border-radius: 28px;
  box-shadow: var(--shadow);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--orange);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 11px;
  font-weight: 850;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.header-actions,
.edmund-system-header__actions { font-family: ui-sans-serif, system-ui, sans-serif; }

.connection-pill,
.user-pill,
.header-button {
  min-height: 39px;
  border: 1px solid rgba(39, 39, 87, .15);
  border-radius: 999px;
  padding: 8px 13px;
  color: #39385f;
  background: rgba(255, 255, 255, .78);
  font-size: 12px;
  font-weight: 760;
}

.connection-pill[data-state="online"] {
  color: #146245;
  border-color: rgba(36, 153, 104, .28);
  background: #e9f8f0;
}

.connection-pill[data-state="offline"] {
  color: #9d333a;
  border-color: rgba(201, 75, 82, .28);
  background: #fff0ef;
}

.header-button { cursor: pointer; }
.header-button:hover,
.header-button:focus-visible { color: var(--paper); background: var(--midnight); }

.login-layout {
  min-height: min(720px, calc(100vh - 150px));
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(390px, .85fr);
  gap: 24px;
}

.login-hero {
  position: relative;
  min-height: 650px;
  overflow: hidden;
  padding: clamp(38px, 6vw, 86px);
  display: flex;
  align-items: flex-end;
  background:
    linear-gradient(150deg, rgba(72, 74, 151, .34), transparent 52%),
    linear-gradient(145deg, #202048, #2c2c62 56%, #1b1b3d);
}

.night-orbit {
  position: absolute;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 50%;
}

.night-orbit-one { width: 430px; height: 430px; top: -230px; right: -80px; }
.night-orbit-two { width: 250px; height: 250px; top: -116px; right: 10px; }

.hero-parchment {
  position: absolute;
  top: clamp(42px, 7vw, 90px);
  right: clamp(36px, 7vw, 88px);
  width: clamp(220px, 34vw, 390px);
  aspect-ratio: 1.45;
  border: 1px solid rgba(112, 62, 26, .38);
  border-radius: 13px 36px 16px 31px;
  background:
    radial-gradient(circle at 21% 20%, rgba(255,255,255,.9), transparent 28%),
    repeating-linear-gradient(0deg, transparent 0 35px, rgba(119,72,34,.08) 36px, transparent 37px),
    linear-gradient(135deg, #fff2cd, #e8c78e 72%, #c99a5d);
  box-shadow:
    inset 13px 0 20px rgba(255,255,255,.27),
    inset -16px 0 25px rgba(103,56,18,.17),
    0 28px 48px rgba(7,7,25,.35);
  transform: rotate(-4deg);
}

.hero-parchment::before,
.hero-parchment::after {
  content: "";
  position: absolute;
  left: -11px;
  right: -11px;
  height: 25px;
  border-radius: 50%;
  background: linear-gradient(#d8ad70, #f2d79f 48%, #b98245);
  box-shadow: 0 5px 8px rgba(76,41,16,.25);
}

.hero-parchment::before { top: -10px; }
.hero-parchment::after { bottom: -10px; transform: rotate(180deg); }

.hero-quill {
  position: absolute;
  right: 6%;
  bottom: 8%;
  width: 24%;
  height: 125%;
  border: 2px solid rgba(93,48,19,.42);
  border-radius: 100% 0 95% 10% / 80% 0 100% 20%;
  background:
    repeating-linear-gradient(115deg, transparent 0 14px, rgba(84,44,18,.18) 15px 16px, transparent 17px 27px),
    linear-gradient(100deg, #fff7df 0 27%, #d9a15e 29% 35%, #f6e1b3 38% 70%, #9a5a29 74% 100%);
  box-shadow: inset -12px 0 16px rgba(83,43,15,.18), 0 10px 20px rgba(71,36,15,.2);
  transform: rotate(27deg);
  transform-origin: bottom center;
}

.hero-quill::after {
  content: "";
  position: absolute;
  left: 45%;
  top: 4%;
  bottom: -17%;
  width: 4px;
  border-radius: 4px;
  background: linear-gradient(#d99b49, #7e421c);
  transform: rotate(-2deg);
}

.hero-seal {
  position: absolute;
  left: 28%;
  bottom: -4%;
  z-index: 2;
  width: 64px;
  height: 64px;
  border: 7px double rgba(255, 190, 157, .35);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: #f3b29c;
  background: radial-gradient(circle at 32% 25%, #a92e33, #6c111e 72%);
  box-shadow: 0 9px 18px rgba(58,10,16,.4);
  font-size: 27px;
  font-weight: 800;
}

.hero-ink-line {
  position: absolute;
  left: 16%;
  height: 2px;
  border-radius: 2px;
  background: rgba(80, 53, 36, .34);
}

.hero-ink-line-one { width: 42%; top: 31%; }
.hero-ink-line-two { width: 52%; top: 48%; }
.hero-ink-line-three { width: 34%; top: 65%; }

.hero-copy { position: relative; z-index: 2; width: min(620px, 82%); }
.student-label { margin: 0 0 8px; color: #f6b46e; font-weight: 800; }
.hero-copy h1 { margin: 0; font-size: clamp(43px, 5.7vw, 82px); line-height: .96; letter-spacing: -.04em; }
.hero-copy h1 span { color: #f1a055; font-style: italic; }
.hero-copy > p:last-child { max-width: 630px; margin: 25px 0 0; color: rgba(255,255,255,.76); font-size: 17px; line-height: 1.8; }

.login-panel {
  align-self: center;
  padding: clamp(28px, 4vw, 54px);
  color: var(--ink);
  background: var(--paper);
}

.login-heading { margin-bottom: 30px; display: flex; align-items: flex-start; gap: 18px; }
.section-number { color: rgba(39,39,87,.18); font-size: 50px; font-weight: 800; line-height: .9; }
.login-heading h2 { margin: 0 0 9px; font-size: clamp(29px, 3vw, 43px); }
.login-heading p:last-child { margin: 0; color: var(--ink-soft); line-height: 1.65; }

.login-form { display: grid; gap: 18px; }
.field { display: grid; gap: 8px; }
.field > span:first-child { color: var(--orange-deep); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 13px; font-weight: 800; }

.field input,
.admin-search input {
  width: 100%;
  min-height: 52px;
  border: 1px solid rgba(39,39,87,.17);
  border-radius: 15px;
  padding: 12px 15px;
  color: var(--ink);
  background: #fffefa;
  outline: none;
}

.field input:focus,
.admin-search input:focus,
.writing-field textarea:focus { border-color: var(--orange); box-shadow: 0 0 0 4px rgba(232,123,44,.13); }

.password-field { position: relative; display: block; }
.password-field input { padding-right: 78px; }
.password-field button {
  position: absolute;
  top: 7px;
  right: 7px;
  bottom: 7px;
  border: 0;
  border-radius: 10px;
  padding: 0 13px;
  color: var(--midnight);
  background: #eeeaf8;
  cursor: pointer;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 12px;
  font-weight: 800;
}

.primary-button,
.secondary-button,
.small-button {
  border: 0;
  border-radius: 15px;
  padding: 13px 19px;
  font-weight: 800;
  cursor: pointer;
  transition: transform .16s ease, box-shadow .16s ease, opacity .16s ease;
}

.primary-button {
  color: #fff;
  background: linear-gradient(135deg, var(--orange), #c9581c);
  box-shadow: 0 9px 0 #92380f, 0 16px 26px rgba(146,56,15,.22);
}

.primary-button:hover,
.primary-button:focus-visible { transform: translateY(-2px); box-shadow: 0 11px 0 #92380f, 0 18px 30px rgba(146,56,15,.27); }
.primary-button:active { transform: translateY(6px); box-shadow: 0 3px 0 #92380f; }
.primary-button:disabled { opacity: .55; cursor: wait; transform: none; }
.login-button { min-height: 55px; margin-top: 3px; }

.secondary-button,
.small-button { color: var(--midnight); background: var(--paper); box-shadow: 0 8px 22px rgba(9,10,40,.16); }
.small-button { padding: 9px 13px; border-radius: 999px; font-size: 12px; }

.form-status { min-height: 1.4em; margin: 0; color: var(--ink-soft); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 13px; }
.form-status[data-state="error"] { color: var(--red); }
.form-status[data-state="success"] { color: var(--green); }
.account-note { margin: 26px 0 0; color: #77738b; font-size: 12px; line-height: 1.6; }

.workspace-hero,
.utility-hero {
  margin-bottom: 24px;
  padding: clamp(25px, 4vw, 48px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: linear-gradient(135deg, rgba(55,55,116,.94), rgba(29,29,67,.93));
}

.workspace-hero h1,
.utility-hero h1 { margin: 0 0 10px; font-size: clamp(33px, 4.5vw, 59px); line-height: 1.05; }
.workspace-hero > div:first-child > p:last-child,
.utility-hero > div:first-child > p:last-child { margin: 0; color: rgba(255,255,255,.7); font-size: 16px; }

.local-checker-pill {
  min-width: min(100%, 350px);
  border: 1px solid rgba(255,255,255,.16);
  border-radius: 18px;
  padding: 15px 17px;
  display: grid;
  grid-template-columns: 13px 1fr;
  gap: 3px 11px;
  color: #e8e7ff;
  background: rgba(15,15,42,.43);
  font-family: ui-sans-serif, system-ui, sans-serif;
}

.local-checker-pill > span { width: 10px; height: 10px; margin-top: 4px; border-radius: 50%; background: #f1b15f; box-shadow: 0 0 0 5px rgba(241,177,95,.12); }
.local-checker-pill strong { font-size: 13px; }
.local-checker-pill small { grid-column: 2; color: rgba(255,255,255,.56); font-size: 11px; }
.local-checker-pill[data-state="ready"] > span { background: #54d39a; box-shadow: 0 0 0 5px rgba(84,211,154,.12); }
.local-checker-pill[data-state="error"] > span { background: #ef7a7f; box-shadow: 0 0 0 5px rgba(239,122,127,.12); }

.writing-form { display: grid; gap: 24px; }
.prompt-panel,
.editor-panel,
.grammar-panel,
.archive-list-panel,
.submission-detail,
.grammar-summary-panel,
.admin-review-panel,
.submission-progress-dashboard {
  color: var(--ink);
  background: rgba(251, 247, 239, .975);
}

.prompt-panel,
.editor-panel,
.grammar-panel,
.archive-list-panel,
.submission-detail,
.grammar-summary-panel,
.admin-review-panel,
.submission-progress-dashboard { padding: clamp(22px, 3vw, 34px); }

.section-heading,
.grammar-panel-heading {
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.section-heading h2,
.grammar-panel-heading h2 { margin: 0; font-size: clamp(25px, 3vw, 35px); }
.section-heading-actions,
.grammar-panel-controls { display: flex; align-items: center; gap: 10px; }
.topic-picker-actions { display: flex; align-items: center; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.remove-writing-topic-button { border-color: rgba(161,55,63,.22); color: #8f343b; background: #fff0ef; }
.topic-picker-button { color: #fff; background: var(--midnight); }
.random-topic-button { border: 1px solid rgba(232,123,44,.32); color: #7f3c0c; background: #fff0d7; box-shadow: none; }
.random-topic-button:hover,
.random-topic-button:focus-visible { border-color: var(--orange); background: #ffe1b2; }
.draft-state,
.issue-count,
.count-badge {
  border-radius: 999px;
  padding: 8px 12px;
  color: #8a4317;
  background: var(--orange-pale);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 12px;
  font-weight: 800;
}

.writing-field { display: block; }
.writing-field-title { margin: 0 0 9px; display: flex; align-items: center; flex-wrap: wrap; gap: 8px; color: var(--ink); font: 850 13px ui-sans-serif,system-ui,sans-serif; }
.writing-field-title em { border-radius: 999px; padding: 6px 10px; color: #8e252d; background: #fcd9d9; font-size: 11px; font-style: normal; letter-spacing: .04em; }
.writing-field textarea {
  width: 100%;
  border: 1px solid rgba(39,39,87,.16);
  border-radius: 18px;
  padding: 19px 21px;
  color: #262541;
  background: var(--paper-strong);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.8);
  outline: none;
  resize: none;
  line-height: 1.75;
}

.prompt-panel textarea { min-height: 108px; font-size: 18px; }
.floating-writing-topic {
  position: fixed;
  top: calc(var(--writing-feedback-sticky-top, 76px) + 10px);
  left: 50%;
  z-index: 480;
  width: min(1444px, calc(100% - 36px));
  overflow: hidden;
  border: 1px solid rgba(39,39,87,.2);
  border-radius: 17px;
  color: var(--ink);
  background: rgba(255,253,248,.97);
  box-shadow: 0 16px 42px rgba(9,10,40,.22);
  transform: translateX(-50%);
  backdrop-filter: blur(18px) saturate(1.12);
  -webkit-backdrop-filter: blur(18px) saturate(1.12);
  animation: floating-topic-in .18s ease both;
}
.floating-writing-topic-toggle {
  width: 100%;
  min-height: 56px;
  border: 0;
  padding: 9px 15px;
  display: grid;
  grid-template-columns: auto minmax(0,1fr) auto;
  align-items: center;
  gap: 13px;
  color: inherit;
  background: transparent;
  text-align: left;
  cursor: pointer;
}
.floating-writing-topic-toggle:hover,
.floating-writing-topic-toggle:focus-visible { background: #fff6e8; }
.floating-writing-topic-toggle:focus-visible { outline: 3px solid rgba(232,123,44,.28); outline-offset: -3px; }
.floating-writing-topic-label { display: grid; gap: 1px; white-space: nowrap; }
.floating-writing-topic-label small { color: var(--orange-deep); font: 850 8px/1.2 ui-sans-serif,system-ui,sans-serif; letter-spacing: .12em; }
.floating-writing-topic-label strong { font-size: 13px; }
.floating-writing-topic-preview {
  min-width: 0;
  overflow: hidden;
  color: #4f4c62;
  font-size: 14px;
  line-height: 1.45;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.floating-writing-topic-chevron { color: var(--orange-deep); font: 900 22px/1 ui-sans-serif,system-ui,sans-serif; transition: transform .18s ease; }
.floating-writing-topic[data-expanded="true"] .floating-writing-topic-chevron { transform: rotate(180deg); }
.floating-writing-topic-content {
  max-height: min(44vh, 430px);
  overflow: auto;
  border-top: 1px solid rgba(39,39,87,.12);
  padding: 15px 18px 18px;
  background: rgba(255,253,248,.99);
  overscroll-behavior: contain;
}
.floating-writing-topic-content > p { margin: 0; color: #292745; font-size: clamp(15px,1.4vw,18px); line-height: 1.7; white-space: pre-wrap; overflow-wrap: anywhere; }
.floating-writing-topic-images { margin-top: 14px; display: grid; gap: 11px; }
.floating-writing-topic-image-viewport { max-width: 100%; overflow: auto; border: 1px solid rgba(39,39,87,.12); border-radius: 13px; background: #f8f7fb; overscroll-behavior: contain; }
.floating-writing-topic-images img { width: min(680px,100%); height: auto; max-height: 34vh; margin: 0 auto; display: block; object-fit: contain; background: #fff; }
@keyframes floating-topic-in {
  from { opacity: 0; transform: translate(-50%,-7px); }
  to { opacity: 1; transform: translate(-50%,0); }
}
.selected-topic-preview { margin-top: 14px; border: 1px solid rgba(39,39,87,.13); border-radius: 16px; padding: 14px; background: #fffdf9; }
.selected-topic-preview-head { margin-bottom: 10px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.selected-topic-preview-head strong { font-size: 14px; }
.selected-topic-preview-head button { border: 0; border-radius: 999px; padding: 7px 10px; color: #8b383d; background: #fff0ef; cursor: pointer; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 11px; font-weight: 800; }
.selected-topic-preview-controls { display: flex; align-items: center; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.selected-topic-zoom { display: flex; align-items: center; gap: 7px; color: var(--ink-soft); font: 800 11px ui-sans-serif, system-ui, sans-serif; }
.selected-topic-zoom select { border: 1px solid rgba(39,39,87,.14); border-radius: 9px; padding: 6px 8px; color: var(--ink); background: #fff; font-weight: 800; }
.selected-topic-images { display: grid; gap: 12px; }
.selected-topic-image-viewport { max-width: 100%; overflow: auto; border: 1px solid rgba(39,39,87,.1); border-radius: 13px; background: #f8f7fb; overscroll-behavior: contain; touch-action: pan-x pan-y; }
.selected-topic-images img { max-width: none; height: auto; min-width: 1px; border-radius: 12px; object-fit: contain; background: #fff; display: block; }
.topic-reference-area { margin-top: 16px; display: grid; gap: 14px; }
.topic-reference-links { border: 1px solid rgba(97,118,207,.2); border-radius: 16px; padding: 13px 15px; display: grid; gap: 9px; background: #f5f7ff; }
.topic-reference-link-row { margin: 0; display: flex; align-items: center; flex-wrap: wrap; gap: 8px; color: #4c4965; font-size: 14px; line-height: 1.5; }
.manual-topic-reference-links { background: linear-gradient(135deg,#f5f7ff 0%,#fff8ea 100%); }
.manual-topic-word-list { margin-top: 3px; border-top: 1px dashed rgba(97,118,207,.25); padding-top: 12px; }
.manual-topic-word-list strong { display: block; margin-bottom: 7px; color: #304794; font: 850 11px/1.4 ui-sans-serif,system-ui,sans-serif; letter-spacing: .04em; text-transform: uppercase; }
.manual-topic-word-list p { margin: 0; color: #4c4965; white-space: pre-wrap; overflow-wrap: anywhere; font-size: 14px; line-height: 1.7; }
.topic-reference-clip { width: 34px; height: 34px; border: 1px solid rgba(97,118,207,.3); border-radius: 50%; display: inline-grid; place-items: center; color: #304794; background: #fff; box-shadow: 0 5px 14px rgba(39,39,87,.08); text-decoration: none; font-size: 16px; }
.topic-reference-clip:hover,
.topic-reference-clip:focus-visible { border-color: var(--orange); background: #fff6e8; transform: translateY(-1px); }
.topic-reference-disclosures { display: grid; gap: 10px; }
.topic-reference-details { overflow: hidden; border: 1px solid rgba(39,39,87,.14); border-radius: 17px; background: #fffdf9; box-shadow: 0 8px 24px rgba(39,39,87,.06); }
.topic-reference-summary { min-height: 64px; padding: 13px 15px; display: grid; grid-template-columns: auto minmax(0,1fr) auto; align-items: center; gap: 10px; color: var(--ink); cursor: pointer; list-style: none; }
.topic-reference-summary::-webkit-details-marker { display: none; }
.topic-reference-summary strong { font-size: 15px; line-height: 1.45; }
.topic-reference-book { border-radius: 999px; padding: 6px 9px; color: #8a4317; background: var(--orange-pale); font: 850 9px ui-sans-serif,system-ui,sans-serif; letter-spacing: .04em; text-transform: uppercase; }
.topic-reference-chevron { color: var(--orange-deep); font: 850 21px ui-sans-serif,system-ui,sans-serif; transition: transform .18s ease; }
.topic-reference-details[open] .topic-reference-summary { border-bottom: 1px solid rgba(39,39,87,.1); background: #fff8ed; }
.topic-reference-details[open] .topic-reference-chevron { transform: rotate(45deg); }
.topic-reference-content { padding: 16px; }
.topic-reference-content .loading-state { min-height: 130px; }
.topic-reference-toolbar,
.topic-reference-vocabulary-head { margin-bottom: 13px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.topic-reference-vocabulary-mini-card { border:1px solid rgba(74,102,185,.28); background:linear-gradient(135deg,#edf3ff,#fff 54%,#f4ecff); box-shadow:0 10px 22px rgba(52,70,126,.1); }
.model-essay-chinese-toggle { display:inline-flex; align-items:center; gap:8px; padding:8px 11px; border:1px solid rgba(196,102,45,.2); border-radius:999px; color:#7a3d21; background:#fff7ef; font-size:12px; font-weight:850; }
.model-essay-chinese-toggle input { width:17px; height:17px; accent-color:var(--orange-deep); }
.topic-reference-toolbar > strong,
.topic-reference-vocabulary-head strong { font-size: 17px; }
.topic-reference-vocabulary-head > span,
.topic-reference-vocabulary-controls > span { border-radius: 999px; padding: 6px 9px; color: #304794; background: #edf1ff; font: 850 10px ui-sans-serif,system-ui,sans-serif; }
.topic-reference-vocabulary-controls { display: flex; align-items: center; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.topic-reference-vocabulary-scale { display: inline-flex; align-items: center; gap: 7px; color: var(--ink-soft); font: 800 11px ui-sans-serif,system-ui,sans-serif; }
.topic-reference-vocabulary-scale select { border: 1px solid rgba(39,39,87,.14); border-radius: 9px; padding: 6px 8px; color: var(--ink); background: #fff; font-weight: 800; }
.topic-reference-translation-toggle { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-soft); cursor: pointer; font: 800 12px ui-sans-serif,system-ui,sans-serif; }
.topic-reference-translation-toggle input { width: 19px; height: 19px; accent-color: var(--blue); }
.topic-reference-translation-toggle input:disabled { opacity: .45; cursor: not-allowed; }
.topic-reference-model-essay { display: grid; gap: 12px; }
.topic-reference-paragraph { border: 1px solid rgba(39,39,87,.11); border-radius: 14px; padding: 15px; background: #fff; }
.topic-reference-paragraph h4 { margin: 0 0 9px; color: var(--orange-deep); font: 850 10px ui-sans-serif,system-ui,sans-serif; letter-spacing: .09em; text-transform: uppercase; }
.topic-reference-paragraph p { margin: 0; overflow-wrap: anywhere; font-size: 15px; line-height: 1.75; }
.topic-reference-paragraph .topic-reference-chinese { margin-top: 10px; border-top: 1px dashed rgba(39,39,87,.13); padding-top: 10px; color: #68647a; font-family: "Noto Serif TC Local", Georgia, serif; font-size: 14px; }
.topic-reference-table-scroll { max-width: 100%; overflow-x: auto; border: 1px solid rgba(39,39,87,.13); border-radius: 14px; overscroll-behavior-inline: contain; }
.topic-reference-table { width: 100%; min-width: 560px; border-collapse: collapse; background: #fff; }
.topic-reference-table th,
.topic-reference-table td { width: 50%; border-bottom: 1px solid rgba(39,39,87,.1); padding: 11px 13px; vertical-align: top; text-align: left; font-size: calc(13px * var(--vocabulary-text-scale, 1)); line-height: 1.5; }
.topic-reference-table th { position: sticky; top: 0; z-index: 1; color: #fff; background: var(--midnight); font: 850 12px ui-sans-serif,system-ui,sans-serif; }
.topic-reference-table tbody tr:last-child td { border-bottom: 0; }
.topic-reference-table tbody tr:nth-child(even) { background: #f8f7fb; }
.topic-reference-table tbody tr.is-used,
.topic-reference-table tbody tr.is-used:nth-child(even) { color: #145c35; background: #dcf6e5; }
.topic-reference-table tbody tr.is-used td:first-child { box-shadow: inset 4px 0 #2b9d61; font-weight: 800; }
.topic-reference-error { min-height: 130px; display: grid; place-items: center; align-content: center; gap: 10px; color: var(--ink-soft); text-align: center; }
.topic-reference-error p { margin: 0; font-size: 13px; line-height: 1.6; }
.topic-reference-retry { border: 1px solid rgba(39,39,87,.14); color: #fff; background: var(--midnight); box-shadow: none; }
.writing-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(310px, 390px); align-items: start; gap: 24px; }
.writing-field-main textarea { min-height: 480px; overflow: hidden; font-size: clamp(17px, 1.45vw, 21px); line-height: 1.9; }
.writing-field-main textarea { transition: background-color .25s ease, border-color .25s ease, box-shadow .25s ease; }
.writing-field-main.is-proofreading textarea { border-color: rgba(180,58,64,.34); background: #fcd9d9; box-shadow: inset 0 0 0 1px rgba(180,58,64,.08), 0 0 0 5px rgba(180,58,64,.07); }
.writing-editor-title em { margin-left: 9px; border-radius: 999px; padding: 5px 9px; color: #9f3038; background: #fcd9d9; vertical-align: middle; font: 850 11px ui-sans-serif,system-ui,sans-serif; font-style: normal; white-space: nowrap; }

.editor-heading-tools { display: flex; align-items: center; gap: 14px; }
.editor-heading-tools .small-button { white-space: nowrap; }
.model-essay-mini-panel {
  width: min(500px, 100%);
  margin: -6px 0 15px auto;
  border: 1px solid rgba(232,123,44,.24);
  border-radius: 16px;
  padding: 12px 13px;
  display: grid;
  grid-template-columns: minmax(150px,1fr) auto auto;
  align-items: center;
  gap: 11px;
  background: linear-gradient(135deg,#fff9ee,#f7f4ff);
  box-shadow: 0 9px 24px rgba(39,39,87,.07);
}
.model-essay-mini-panel[hidden] { display: none; }
.model-essay-mini-panel strong { display: block; font-size: 13px; }
.model-essay-mini-panel small { display: block; margin-top: 3px; color: var(--ink-soft); font: 750 10px/1.4 ui-sans-serif,system-ui,sans-serif; }
.model-essay-mini-chips { display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.model-essay-mini-chip { min-width: 35px; min-height: 34px; border: 1px solid rgba(39,39,87,.14); border-radius: 999px; padding: 6px 9px; color: var(--ink); background: #fff; cursor: pointer; font: 850 11px ui-sans-serif,system-ui,sans-serif; }
.model-essay-mini-chip[aria-pressed="true"] { border-color: var(--orange); color: #843d10; background: #ffe4bf; box-shadow: 0 0 0 3px rgba(232,123,44,.1); }
.proofread-status {
  margin: 8px 2px 0;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.5;
}

.writing-editor-stack {
  position: relative;
}

.writing-editor-stack[data-model-essay-visible="true"] {
  --model-essay-overlay-visible: 1;
}

.writing-editor-stack .writing-essay-overlay {
  position: absolute;
  inset: 0;
  border: 1px solid transparent;
  border-radius: 18px;
  padding: 19px 21px;
  color: #9ea0b5;
  background: transparent;
  font-size: clamp(17px, 1.45vw, 21px);
  line-height: 1.9;
  white-space: pre-wrap;
  overflow: hidden;
  pointer-events: none;
  user-select: none;
  overflow-wrap: anywhere;
  display: none;
  box-sizing: border-box;
}

.writing-essay-overlay-prefix { color: transparent; }
.writing-essay-overlay-guide { color: #9ea0b5; }

.writing-editor-stack[data-model-essay-visible="true"] textarea {
  color: var(--ink);
}

.writing-editor-stack textarea {
  position: relative;
  z-index: 2;
  background: transparent;
}

.writing-editor-stack[data-model-essay-visible="true"] .writing-essay-overlay {
  display: block;
}

.editor-metrics { display: flex; align-items: baseline; gap: 7px; font-family: ui-sans-serif, system-ui, sans-serif; }
.editor-metrics strong { color: var(--orange-deep); font-size: 30px; }
.editor-metrics span { color: var(--ink-soft); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; }

.writing-timer-toggle {
  min-height: 43px;
  border: 1px solid rgba(39,39,87,.16);
  border-radius: 999px;
  padding: 8px 13px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: var(--midnight);
  background: #fffdf9;
  cursor: pointer;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 12px;
  font-weight: 800;
}
.writing-timer-toggle strong { color: var(--orange-deep); font-variant-numeric: tabular-nums; }
.writing-timer-toggle[aria-expanded="true"] { border-color: var(--orange); background: var(--orange-pale); }
.writing-timer-panel {
  margin: -4px 0 20px;
  border: 1px solid rgba(39,39,87,.14);
  border-radius: 19px;
  padding: 18px;
  background: linear-gradient(135deg, #fffdf9, #fff5e6);
  box-shadow: 0 12px 30px rgba(39,39,87,.08);
  font-family: ui-sans-serif, system-ui, sans-serif;
}
.writing-timer-head { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.writing-timer-head h3 { margin: 0; font-family: Georgia, "Times New Roman", "Noto Serif TC Local", serif; font-size: 21px; }
.writing-timer-display { color: var(--orange-deep); font-size: clamp(27px, 3.5vw, 38px); font-variant-numeric: tabular-nums; letter-spacing: .04em; }
.writing-timer-settings { margin-top: 15px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(240px, .9fr); gap: 14px; }
.writing-timer-duration { margin: 0; border: 0; padding: 0; display: grid; grid-template-columns: repeat(3, minmax(70px, 1fr)); gap: 9px; }
.writing-timer-duration legend { grid-column: 1 / -1; margin-bottom: 5px; padding: 0; color: var(--ink-soft); font-size: 11px; font-weight: 800; }
.writing-timer-duration label { display: grid; grid-template-columns: auto minmax(0, 1fr); align-items: center; gap: 7px; border: 1px solid rgba(39,39,87,.12); border-radius: 12px; padding: 7px 9px; background: #fff; }
.writing-timer-duration label span { color: var(--ink-soft); font-size: 11px; }
.writing-timer-duration input { width: 100%; min-width: 0; border: 0; padding: 5px; color: var(--ink); background: transparent; text-align: right; font-weight: 800; outline: none; }
.writing-timer-duration label:focus-within { border-color: var(--orange); box-shadow: 0 0 0 3px rgba(232,123,44,.12); }
.writing-timer-force-option { border: 1px solid rgba(39,39,87,.12); border-radius: 14px; padding: 12px; display: flex; align-items: flex-start; gap: 10px; background: #fff; cursor: pointer; }
.writing-timer-force-option input { width: 19px; height: 19px; margin: 1px 0 0; accent-color: var(--orange-deep); flex: 0 0 auto; }
.writing-timer-force-option span { display: grid; gap: 4px; }
.writing-timer-force-option strong { font-size: 12px; }
.writing-timer-force-option small { color: var(--ink-soft); font-size: 10px; line-height: 1.45; }
.writing-timer-actions { margin-top: 13px; display: flex; flex-wrap: wrap; gap: 8px; }
.writing-timer-actions .small-button { border: 1px solid rgba(39,39,87,.12); box-shadow: none; }
.writing-timer-actions .writing-timer-primary { color: #fff; background: var(--midnight); }
.writing-timer-actions .writing-timer-retry { color: #fff; background: var(--orange-deep); }
.writing-timer-actions button:disabled { opacity: .45; cursor: not-allowed; }
.writing-timer-status { min-height: 1.35em; margin: 12px 0 0; color: var(--ink-soft); font-size: 11px; line-height: 1.5; }
.writing-timer-panel[data-status="running"] { border-color: rgba(36,153,104,.35); }
.writing-timer-panel[data-status="expired"] { border-color: rgba(201,75,82,.35); background: #fff7f4; }
.writing-timer-panel[data-status="expired"] .writing-timer-status { color: #9d333a; font-weight: 750; }
.writing-stopwatch { min-width: 255px; border: 1px solid rgba(39,39,87,.14); border-radius: 15px; padding: 9px 11px; display: flex; align-items: center; gap: 9px; background: #fff; box-shadow: 0 7px 20px rgba(39,39,87,.07); }
.writing-stopwatch > span[aria-hidden] { color: var(--blue); font-size: 21px; }
.writing-stopwatch-copy { display: grid; gap: 1px; min-width: 82px; }
.writing-stopwatch-copy small { color: var(--ink-soft); font: 800 9px ui-sans-serif, system-ui, sans-serif; letter-spacing: .03em; }
.writing-stopwatch-copy strong { color: var(--ink); font-size: 15px; font-variant-numeric: tabular-nums; }
.writing-stopwatch-actions { margin-left: auto; display: flex; gap: 4px; }
.writing-stopwatch-actions button { border: 0; border-radius: 8px; padding: 6px 7px; color: var(--ink); background: #f0eff6; cursor: pointer; font: 800 9px ui-sans-serif, system-ui, sans-serif; }
.writing-stopwatch-actions button:disabled { opacity: .42; cursor: not-allowed; }
.writing-stopwatch[data-status="running"] { border-color: rgba(36,153,104,.35); background: #f2fff9; }
.writing-stopwatch[data-status="running"] .writing-stopwatch-copy strong { color: #16734c; }

.editor-note { margin: 15px 2px 4px; display: flex; gap: 10px; color: #777389; font-size: 12px; line-height: 1.6; }
.editor-note span { color: var(--orange); }
.editor-note p { margin: 0; }

.submission-flow-dialog {
  width: min(840px, calc(100% - 28px));
  max-height: min(90vh, 760px);
  border: 0;
  border-radius: 22px;
  padding: 0;
  color: var(--ink);
  background: var(--paper);
  box-shadow: 0 28px 110px rgba(4, 7, 31, .4);
}

.submission-flow-dialog::backdrop {
  background: rgba(6, 11, 37, .74);
  backdrop-filter: blur(3px);
}

.submission-flow-dialog-shell { padding: 18px; display: grid; gap: 13px; }

.submission-flow-dialog-head {
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.submission-flow-dialog-head h2 {
  margin: 0;
  font-size: clamp(20px, 3.1vw, 30px);
  font-weight: 850;
  line-height: 1.25;
}

.submission-flow-dialog-body { margin: 0; color: var(--ink-soft); line-height: 1.55; }

.submission-flow-form-grid {
  margin: 0;
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(140px, 1fr));
}

.submission-flow-form-grid label { display: grid; gap: 5px; color: var(--ink); font-size: 12px; }
.submission-flow-form-grid input {
  width: 100%;
  min-width: 0;
  border: 1px solid rgba(39, 39, 87, .18);
  border-radius: 10px;
  padding: 8px;
  color: var(--ink);
  background: #fff;
}

.submission-flow-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.submission-flow-actions .secondary-button,
.submission-flow-actions .primary-button { min-width: 150px; }

.submission-flow-actions .secondary-button { box-shadow: none; }

.model-essay-select-all-row {
  margin: 0;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
  font-size: 13px;
}

.model-essay-select-all-row input { width: 18px; height: 18px; accent-color: var(--orange-deep); }

.model-essay-paragraph-list {
  border: 1px solid rgba(39, 39, 87, .13);
  border-radius: 14px;
  min-height: 180px;
  max-height: min(340px, 48vh);
  overflow: auto;
  padding: 8px;
  background: #fffdf9;
}

.model-essay-paragraph-row {
  display: block;
  border: 1px solid rgba(39, 39, 87, .15);
  border-radius: 12px;
  padding: 10px;
  margin: 0 0 8px;
  background: #fff;
}

.model-essay-paragraph-row:last-child { margin-bottom: 0; }

.model-essay-paragraph-row input { width: 16px; height: 16px; accent-color: var(--orange-deep); }

.model-essay-paragraph-row strong { display: block; margin: 3px 0; color: var(--orange-deep); font-size: 13px; }

.model-essay-paragraph-row-preview {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.65;
  font-size: 13px;
  overflow-wrap: anywhere;
}

.proofread-issues-table-wrap { overflow: auto; border: 1px solid rgba(39, 39, 87, .14); border-radius: 12px; }

.proofread-issues-table {
  width: 100%;
  border-collapse: collapse;
  background: #fffdf9;
}

.proofread-issues-table th,
.proofread-issues-table td {
  border-bottom: 1px solid rgba(39, 39, 87, .1);
  padding: 9px 11px;
  text-align: left;
  vertical-align: top;
  font-size: 13px;
  line-height: 1.5;
}

.proofread-issues-table th { position: sticky; top: 0; background: #f3f6ff; color: var(--midnight); }

.proofread-issues-table td { overflow-wrap: anywhere; }

.proofread-issues-table tr:last-child th,
.proofread-issues-table tr:last-child td { border-bottom: 0; }

.submission-flow-dialog-head .dialog-close { width: 34px; height: 34px; }

.model-essay-paragraph-list > .empty-state,
.proofread-issues-table > .empty-state { min-height: 0; }

.submission-status { margin-top: 16px; }
.writing-save-actions { margin-top: 4px; display: flex; flex-wrap: wrap; gap: 12px; }
.submit-writing-button,.save-writing-button { width: min(100%, 330px); min-height: 54px; }
.save-writing-button { border-color: rgba(39,39,87,.2); color: var(--midnight); background: #fff; }
.writing-save-actions button:disabled { opacity: .55; cursor: wait; }

.draft-archive-panel { margin-bottom: 24px; padding: 0; overflow: hidden; }
.draft-archive-panel > summary { min-height: 82px; padding: 19px 24px; display: flex; align-items: center; justify-content: space-between; gap: 16px; cursor: pointer; list-style: none; }
.draft-archive-panel > summary::-webkit-details-marker { display: none; }
.draft-archive-panel > summary span { display: grid; gap: 4px; }
.draft-archive-panel > summary strong { font-size: 19px; }
.draft-archive-panel > summary small { color: var(--ink-soft); font: 11px ui-sans-serif, system-ui, sans-serif; }
.draft-archive-panel > summary em { min-width: 42px; border-radius: 999px; padding: 9px 12px; color: var(--orange-deep); background: var(--orange-pale); text-align: center; font-style: normal; font-weight: 800; }
.draft-archive-panel[open] > summary { border-bottom: 1px solid rgba(39,39,87,.1); }
.draft-archive-head { padding: 15px 24px 0; display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.draft-archive-head p { margin: 0; color: var(--ink-soft); font-size: 12px; }
.draft-list { padding: 16px 24px 24px; display: grid; gap: 10px; }
.draft-row { border: 1px solid rgba(39,39,87,.12); border-radius: 15px; padding: 15px; display: flex; align-items: center; justify-content: space-between; gap: 14px; background: #fffdf9; }
.draft-row-copy { min-width: 0; display: grid; gap: 5px; }
.draft-row-copy strong,.draft-row-copy span,.draft-row-copy p { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.draft-row-copy span { color: var(--ink-soft); font: 10px ui-sans-serif, system-ui, sans-serif; }
.draft-row-copy p { margin: 0; color: #5d5970; font-size: 12px; }
.draft-row-actions { flex: 0 0 auto; display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; }
.draft-delete-button { color: #a0373f; background: #fff1ef; }

.utility-hero-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.admin-student-layout { display: grid; grid-template-columns: minmax(250px,.7fr) minmax(290px,.9fr) minmax(350px,1.25fr); gap: 20px; align-items: start; }
.admin-student-panel,.admin-grammar-panel { padding: clamp(20px,2.5vw,30px); }
.admin-student-list,.admin-grammar-list { display: grid; gap: 9px; }
.admin-student-row { width: 100%; border: 1px solid rgba(39,39,87,.12); border-radius: 14px; padding: 13px; display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--ink); background: #fffdf9; cursor: pointer; text-align: left; }
.admin-student-row span { min-width: 0; display: grid; gap: 4px; }
.admin-student-row strong { overflow-wrap: anywhere; }
.admin-student-row small { color: var(--ink-soft); font: 10px ui-sans-serif,system-ui,sans-serif; }
.admin-student-row em { border-radius: 999px; padding: 6px 9px; color: #5c3d1e; background: var(--orange-pale); font: 800 9px ui-sans-serif,system-ui,sans-serif; font-style: normal; }
.admin-student-row[aria-current="true"] { border-color: var(--orange); background: #fff6e8; box-shadow: 0 0 0 3px rgba(232,123,44,.1); }
.admin-student-records { display: grid; gap: 20px; }
.admin-manual-topic-panel { padding: clamp(20px,2.5vw,30px); }
.admin-manual-topic-intro { margin: -4px 0 18px; color: var(--ink-soft); font-size: 13px; line-height: 1.7; }
.admin-manual-topic-slots { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; counter-reset: manual-topic; }
.admin-manual-topic-slot { counter-increment: manual-topic; display: grid; grid-template-columns: 32px minmax(0,1fr); align-items: center; gap: 9px; }
.admin-manual-topic-slot::before { content: counter(manual-topic,decimal-leading-zero); display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; color: #fff; background: linear-gradient(135deg,var(--orange),#b54f21); font: 800 11px/1 ui-sans-serif,system-ui,sans-serif; box-shadow: 0 7px 18px rgba(181,79,33,.2); }
.admin-manual-topic-slot input,.admin-manual-topic-detail input,.admin-manual-topic-detail textarea { width: 100%; border: 1px solid rgba(39,39,87,.15); border-radius: 12px; padding: 11px 13px; color: var(--ink); background: rgba(255,255,255,.88); outline: none; }
.admin-manual-topic-slot input:focus,.admin-manual-topic-detail input:focus,.admin-manual-topic-detail textarea:focus { border-color: var(--orange); box-shadow: 0 0 0 4px rgba(232,123,44,.12); }
.admin-manual-topic-actions { margin-top: 16px; display: flex; align-items: center; flex-wrap: wrap; gap: 14px; }
.admin-manual-topic-actions .form-status { margin: 0; }
.admin-manual-topic-list { display: grid; gap: 12px; }
.admin-manual-topic-card { border: 1px solid rgba(39,39,87,.13); border-radius: 17px; background: rgba(255,255,255,.72); overflow: hidden; }
.admin-manual-topic-card summary { cursor: pointer; list-style: none; display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 6px 14px; padding: 15px 17px; }
.admin-manual-topic-card summary::-webkit-details-marker { display:none; }
.admin-manual-topic-card summary strong { line-height: 1.45; }
.admin-manual-topic-card summary small { grid-column: 1; color: var(--ink-soft); font: 700 11px/1.3 ui-sans-serif,system-ui,sans-serif; }
.admin-manual-topic-card summary span { grid-row: 1 / span 2; grid-column: 2; align-self: center; color: var(--orange-deep); font-size: 12px; font-weight: 800; }
.admin-manual-topic-card[open] summary { background: #fff7ea; }
.admin-manual-topic-detail { border-top: 1px solid rgba(39,39,87,.1); padding: 16px; display: grid; gap: 12px; }
.admin-manual-topic-detail label { display: grid; gap: 6px; color: var(--ink-soft); font: 800 11px/1.4 ui-sans-serif,system-ui,sans-serif; }
.admin-manual-topic-detail textarea { resize: vertical; min-height: 92px; line-height: 1.55; }
.admin-manual-topic-detail-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; }
.admin-manual-topic-detail-actions { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.admin-manual-topic-delete { color: #8f2138; border-color: rgba(143,33,56,.24); }
.admin-grammar-problem { overflow: hidden; border: 1px solid rgba(39,39,87,.12); border-radius: 14px; background: #fffdf9; }
.admin-grammar-problem > summary { padding: 13px; display: flex; align-items: center; justify-content: space-between; gap: 10px; cursor: pointer; list-style: none; }
.admin-grammar-problem > summary::-webkit-details-marker { display: none; }
.admin-grammar-problem > summary span { min-width: 0; display: grid; gap: 3px; }
.admin-grammar-problem > summary small { color: var(--ink-soft); font: 10px ui-sans-serif,system-ui,sans-serif; overflow-wrap: anywhere; }
.admin-grammar-delete-category,.admin-grammar-delete-occurrence { border: 1px solid #efb4b0; border-radius: 9px; padding: 7px 9px; color: #9f2f38; background: #fff2f0; cursor: pointer; font: 800 9px ui-sans-serif,system-ui,sans-serif; }
.admin-grammar-occurrences { border-top: 1px solid rgba(39,39,87,.1); padding: 11px; display: grid; gap: 10px; }
.admin-grammar-occurrence { border: 1px solid rgba(39,39,87,.1); border-radius: 12px; padding: 9px; background: #fff; }
.admin-grammar-occurrence .grammar-history-card { border: 0; padding: 0; box-shadow: none; }
.admin-grammar-delete-occurrence { margin-top: 8px; }

.grammar-panel { position: sticky; top: 100px; max-height: calc(100vh - 125px); overflow: auto; }
.grammar-panel-heading { margin-bottom: 10px; }
.grammar-toggle { display: inline-flex; align-items: center; gap: 8px; color: var(--ink-soft); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 11px; font-weight: 800; cursor: pointer; }
.grammar-toggle input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.grammar-toggle-track { width: 46px; height: 26px; border-radius: 999px; padding: 3px; background: #aaa7b7; transition: background .18s ease; }
.grammar-toggle-track span { display: block; width: 20px; height: 20px; border-radius: 50%; background: #fff; box-shadow: 0 2px 7px rgba(24,24,50,.24); transition: transform .18s ease; }
.grammar-toggle input:checked + .grammar-toggle-track { background: var(--green); }
.grammar-toggle input:checked + .grammar-toggle-track span { transform: translateX(20px); }
.grammar-toggle input:focus-visible + .grammar-toggle-track { outline: 3px solid rgba(97,118,207,.35); outline-offset: 2px; }
.grammar-panel[data-detection-enabled="false"] .grammar-intro,
.grammar-panel[data-detection-enabled="false"] .grammar-list { opacity: .68; }
.grammar-intro { margin: 0 0 20px; color: var(--ink-soft); font-size: 13px; line-height: 1.65; }
.grammar-list { display: grid; gap: 14px; }
.grammar-empty { padding: 30px 18px; border: 1px dashed rgba(39,39,87,.22); border-radius: 18px; text-align: center; }
.grammar-empty > span { width: 46px; height: 46px; margin: 0 auto 12px; border-radius: 50%; display: grid; place-items: center; color: var(--orange-deep); background: #fff1df; font-size: 22px; font-weight: 800; }
.grammar-empty strong { display: block; }
.grammar-empty p { margin: 7px 0 0; color: var(--ink-soft); font-size: 12px; line-height: 1.55; }

.grammar-card {
  overflow: hidden;
  border: 1px solid rgba(39,39,87,.14);
  border-radius: 18px;
  background: #fffdf9;
  box-shadow: 0 10px 28px rgba(39,39,87,.08);
}
.grammar-card[data-review="true"] { border-color: rgba(208,139,44,.42); background: #fffaf0; }
.grammar-card[data-review="true"] .grammar-card-head { background: #fff0ce; }
.grammar-card[data-review="true"] .grammar-replacement { border-left-color: #d08b2c; background: #fff6e6; }

.grammar-card-head { padding: 13px 15px; display: flex; align-items: center; justify-content: space-between; gap: 12px; background: #f0ecf8; }
.grammar-card-head strong { color: #3b3969; font-size: 13px; }
.grammar-card-head span { color: #77738c; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 10px; }
.grammar-card-body { padding: 15px; display: grid; gap: 13px; }
.grammar-fragment { margin: 0; font-size: 15px; line-height: 1.6; }
.grammar-fragment mark { border-radius: 4px; padding: 1px 3px; color: #852a31; background: #ffd7d4; }
.grammar-replacement { border-left: 4px solid var(--green); border-radius: 10px; padding: 11px 12px; background: #eef8f2; }
.grammar-replacement small,
.grammar-explanation small { display: block; margin-bottom: 5px; color: #77738c; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 10px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.grammar-replacement p,
.grammar-explanation p { margin: 0; font-size: 13px; line-height: 1.55; }
.grammar-explanation { color: #55516a; }
.grammar-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.grammar-actions button { border: 0; border-radius: 10px; padding: 9px 12px; cursor: pointer; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 11px; font-weight: 800; }
.apply-suggestion { color: #fff; background: var(--green); }
.dismiss-suggestion { color: #5f5b71; background: #ece8e1; }

.archive-layout { display: grid; grid-template-columns: minmax(300px, .72fr) minmax(0, 1.28fr); align-items: start; gap: 24px; }
.submission-progress-dashboard { margin-bottom: 24px; }
.submission-progress-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.submission-progress-card { border: 1px solid rgba(39,39,87,.13); border-radius: 18px; overflow: hidden; background: #fffdf9; }
.submission-progress-card summary { min-height: 88px; padding: 18px; display: flex; align-items: center; justify-content: space-between; gap: 14px; cursor: pointer; list-style: none; }
.submission-progress-card summary::-webkit-details-marker { display: none; }
.submission-progress-card summary span { display: grid; gap: 3px; }
.submission-progress-card summary strong { font-size: 17px; }
.submission-progress-card summary small { color: var(--ink-soft); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 11px; }
.submission-progress-card summary em { color: var(--orange-deep); font-size: 20px; font-style: normal; font-weight: 800; white-space: nowrap; }
.submission-progress-card[open] summary { border-bottom: 1px solid rgba(39,39,87,.1); }
.submission-progress-chart { min-height: 205px; padding: 12px; }
.submission-progress-chart svg { width: 100%; height: 180px; display: block; overflow: visible; }
.submission-progress-chart .chart-grid { stroke: rgba(39,39,87,.11); stroke-width: 1; }
.submission-progress-chart .chart-line { fill: none; stroke: var(--blue); stroke-width: 3; stroke-linejoin: round; stroke-linecap: round; }
.submission-progress-chart .chart-area { fill: rgba(97,118,207,.1); }
.submission-progress-chart .chart-point { fill: #fff; stroke: var(--blue); stroke-width: 2.5; }
.submission-progress-chart text { fill: var(--ink-soft); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 10px; }
.submission-progress-empty { min-height: 180px; display: grid; place-items: center; color: var(--ink-soft); text-align: center; }
.archive-list-panel { position: sticky; top: 100px; max-height: calc(100vh - 125px); overflow: auto; }
.submission-export-toolbar { margin: -4px 0 14px; border: 1px solid rgba(39,39,87,.12); border-radius: 15px; padding: 11px; display: grid; gap: 9px; background: #fffaf2; font-family: ui-sans-serif, system-ui, sans-serif; }
.submission-select-all { display: flex; align-items: center; gap: 8px; color: var(--ink); font-size: 12px; font-weight: 800; cursor: pointer; }
.submission-select-all input,
.submission-export-checkbox input { width: 18px; height: 18px; accent-color: var(--orange-deep); }
.submission-export-count { color: var(--ink-soft); font-size: 11px; }
.submission-export-actions { display: flex; flex-wrap: wrap; gap: 7px; }
.submission-export-actions .small-button { flex: 1 1 120px; border: 1px solid rgba(39,39,87,.12); box-shadow: none; }
.submission-export-actions .small-button:disabled { opacity: .45; cursor: not-allowed; }
.submission-list { display: grid; gap: 10px; }
.submission-list-item { border: 1px solid rgba(39,39,87,.13); border-radius: 15px; display: grid; grid-template-columns: 42px minmax(0, 1fr); overflow: hidden; background: #fffdf9; }
.submission-list-item.is-current { border-color: var(--orange); background: #fff6e8; }
.submission-list-item.has-feedback { border-color: rgba(43,157,97,.38); background: #e8f8ed; }
.submission-list-item.has-feedback.is-current { border-color: #218052; box-shadow: 0 0 0 2px rgba(43,157,97,.12); }
.submission-export-checkbox { display: grid; place-items: center; border-right: 1px solid rgba(39,39,87,.09); cursor: pointer; }
.submission-row { width: 100%; border: 1px solid rgba(39,39,87,.13); border-radius: 15px; padding: 14px 15px; display: grid; gap: 5px; color: var(--ink); background: #fffdf9; text-align: left; cursor: pointer; }
.submission-list-item .submission-row { border: 0; border-radius: 0; background: transparent; }
.submission-row:hover,
.submission-row:focus-visible,
.submission-row[aria-current="true"] { border-color: var(--orange); background: #fff6e8; }
.submission-row.has-feedback { border-color: rgba(43,157,97,.38); background: #e8f8ed; }
.submission-row.has-feedback:hover,
.submission-row.has-feedback:focus-visible,
.submission-row.has-feedback[aria-current="true"] { border-color: #218052; background: #ddf4e5; }
.submission-list-item .submission-row:hover,
.submission-list-item .submission-row:focus-visible,
.submission-list-item .submission-row[aria-current="true"] { background: #fff6e8; }
.submission-list-item.has-feedback .submission-row,
.submission-list-item.has-feedback .submission-row:hover,
.submission-list-item.has-feedback .submission-row:focus-visible,
.submission-list-item.has-feedback .submission-row[aria-current="true"] { background: #e8f8ed; }
.submission-row strong { overflow: hidden; font-size: 15px; text-overflow: ellipsis; white-space: nowrap; }
.submission-row span { color: var(--ink-soft); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 11px; }
.submission-row .submission-row-title { display: flex; align-items: center; justify-content: space-between; gap: 10px; color: var(--ink); font-family: inherit; font-size: inherit; }
.submission-row-title strong { min-width: 0; }
.submission-feedback-bell { position: relative; flex: 0 0 31px; width: 31px; height: 31px; display: inline-grid; place-items: center; border-radius: 50%; color: #fff; background: #18724a; box-shadow: 0 5px 13px rgba(24,114,74,.22); }
.submission-feedback-bell .submission-feedback-bell-icon { color: inherit; font-size: 15px; line-height: 1; }
.submission-feedback-bell b { position: absolute; top: -5px; right: -4px; min-width: 17px; height: 17px; border: 2px solid #e8f8ed; border-radius: 999px; display: grid; place-items: center; padding: 0 3px; color: #fff; background: #d2264e; font: 850 9px/1 ui-sans-serif,system-ui,sans-serif; }

.submission-detail { --submission-text-scale: 1; min-height: 480px; }
.submission-detail-head { padding-bottom: 20px; border-bottom: 1px solid rgba(39,39,87,.12); }
.submission-detail-head h2 { margin: 0 0 11px; font-size: clamp(20px, 2.1vw, 25px); line-height: 1.35; }
.submission-detail-actions { margin-top: 15px; display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 9px; }
.feedback-font-scale-control { border: 1px solid rgba(39,39,87,.14); border-radius: 999px; padding: 4px; display: inline-flex; align-items: center; gap: 4px; background: #f7f9ff; box-shadow: 0 5px 14px rgba(39,39,87,.07); }
.feedback-font-scale-button { min-width: 38px; height: 34px; border: 0; border-radius: 999px; color: #244783; background: #fff; cursor: pointer; font: 850 12px ui-sans-serif,system-ui,sans-serif; }
.feedback-font-scale-button:hover { background: #eaf1ff; }
.feedback-font-scale-button:disabled { opacity: .42; cursor: not-allowed; }
.feedback-font-scale-select { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-soft); font: 750 10px ui-sans-serif,system-ui,sans-serif; }
.feedback-font-scale-select select { min-width: 78px; border: 0; border-radius: 999px; padding: 8px 10px; color: var(--ink); background: #fff; cursor: pointer; font: 800 11px ui-sans-serif,system-ui,sans-serif; }
.export-submission-button { border: 1px solid rgba(97,118,207,.3); border-radius: 999px; padding: 9px 14px; color: #304794; background: #eef2ff; cursor: pointer; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 12px; font-weight: 800; }
.copy-submission-notice-button { border: 1px solid rgba(214,130,31,.35); border-radius: 999px; padding: 9px 14px; color: #7a3d0c; background: #fff2cf; cursor: pointer; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 12px; font-weight: 800; }
.copy-submission-notice-button:hover { background: #ffe5a4; }
.delete-submission-button { border: 1px solid rgba(201,75,82,.28); border-radius: 999px; padding: 9px 14px; color: #a3353c; background: #fff1f0; cursor: pointer; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 12px; font-weight: 800; }
.deleted-submission-badge { color: #9d333a !important; font-weight: 800; }
.submission-meta { display: flex; flex-wrap: wrap; gap: 8px 16px; color: var(--ink-soft); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 12px; }
.submission-content { margin-top: 24px; white-space: pre-wrap; overflow-wrap: anywhere; font-size: calc(18px * var(--submission-text-scale)); line-height: 1.85; }
.teacher-feedback-view,
.teacher-feedback-editor { margin-top: 32px; border: 1px solid rgba(39,39,87,.15); border-radius: 20px; overflow: clip; background: #fffdf9; box-shadow: 0 14px 34px rgba(39,39,87,.08); }
.teacher-feedback-view-head,
.teacher-feedback-editor-head { padding: 20px 22px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px 18px; color: #fff; background: var(--midnight); }
.teacher-feedback-view-head > div:first-child,
.teacher-feedback-editor-head p { margin: 0 0 5px; color: #ffb83f; font: 850 10px ui-sans-serif,system-ui,sans-serif; letter-spacing: .12em; }
.teacher-feedback-view-head h2,
.teacher-feedback-editor-head h2 { margin: 0; font-size: clamp(22px,2.5vw,30px); }
.teacher-feedback-view-head time { color: rgba(255,255,255,.68); font: 700 11px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-status { border-radius: 999px; padding: 8px 11px; color: #fff; background: rgba(255,255,255,.15); font: 800 11px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-text { padding: 22px; }
.teacher-feedback-text h3 { margin: 0 0 10px; color: var(--orange-deep); font-size: calc(20px * var(--submission-text-scale)); }
.teacher-feedback-text div,
.teacher-feedback-comment > div,
.teacher-feedback-suggestion > div { white-space: pre-wrap; overflow-wrap: anywhere; font-size: calc(16px * var(--submission-text-scale)); line-height: 1.75; }
.teacher-feedback-overall { background: #fff5e7; }
.teacher-feedback-final { border-top: 1px solid rgba(39,39,87,.12); background: #edf7f0; }
.teacher-feedback-improved { border-top: 1px solid rgba(39,39,87,.12); background: #eef4ff; }
.teacher-feedback-improved h3 { color: #304794; }
.teacher-feedback-fragments,
.teacher-feedback-editor-list { display: grid; }
.teacher-feedback-read-pair,
.teacher-feedback-edit-pair { border-top: 1px solid rgba(39,39,87,.13); }
.teacher-feedback-original { padding: 17px 20px; background: #f2f1f4; }
.teacher-feedback-original-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.teacher-feedback-original > span,
.teacher-feedback-original-head > span,
.teacher-feedback-comment > span,
.teacher-feedback-suggestion > span,
.teacher-feedback-comment > strong,
.teacher-feedback-suggestion > strong,
.teacher-feedback-edit-head strong { color: #676272; font: 850 11px ui-sans-serif,system-ui,sans-serif; letter-spacing: .03em; }
.teacher-feedback-original p { margin: 9px 0 0; white-space: pre-wrap; overflow-wrap: anywhere; font-size: calc(17px * var(--submission-text-scale)); font-weight: 800; line-height: 1.6; }
.teacher-feedback-comment { padding: 18px 20px 22px; background: #fff; }
.teacher-feedback-comment > div { margin-top: 9px; }
.teacher-feedback-suggestion { border-top: 1px dashed rgba(34,113,76,.17); padding: 18px 20px 22px; background: #effaf3; }
.teacher-feedback-suggestion > div { margin-top: 9px; color: #193f30; }
.teacher-feedback-suggestion > div.is-empty { color: #718079; font-style: italic; }
.feedback-bookmark-button { min-height: 32px; border: 1px solid rgba(48,71,148,.2); border-radius: 999px; padding: 6px 10px; color: #304794; background: #fff; cursor: pointer; font: 850 10px ui-sans-serif,system-ui,sans-serif; }
.feedback-bookmark-button:hover,
.feedback-bookmark-button:focus-visible { border-color: #304794; background: #edf2ff; }
.feedback-bookmark-button[aria-pressed="true"] { border-color: #d58a21; color: #744309; background: #fff0c9; }
.teacher-feedback-suggestion-copy { margin-top: 16px; border-top: 1px dashed rgba(34,113,76,.24); padding-top: 14px; display: grid; gap: 9px; }
.teacher-feedback-suggestion-copy label { display: grid; gap: 8px; color: #205a42; font: 850 12px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-suggestion-copy textarea { width: 100%; min-height: 120px; border: 1px solid rgba(34,113,76,.24); border-radius: 13px; padding: 13px 14px; color: var(--ink); background: #fff; resize: vertical; font: calc(16px * var(--submission-text-scale))/1.75 Georgia,"Noto Serif TC Local",serif; }
.teacher-feedback-suggestion-copy textarea:focus { outline: 0; border-color: #2d8c62; box-shadow: 0 0 0 4px rgba(45,140,98,.11); }
.teacher-feedback-suggestion-copy-actions { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px 14px; }
.teacher-feedback-suggestion-copy-actions .form-status { flex: 1 1 220px; }
.teacher-feedback-enhancement-copy { margin: 0; border-top: 1px dashed rgba(34,113,76,.24); padding: 14px; background: #f6fcf8; }
.feedback-structured-flow { display: grid; gap: 12px; white-space: normal !important; }
.feedback-structured-paragraph { margin: 0; white-space: pre-wrap; }
.feedback-numbered-card { display: grid; grid-template-columns: auto minmax(0,1fr); align-items: start; gap: 11px; }
.feedback-number-badge { width: 42px; height: 42px; border-radius: 11px; display: grid; place-items: center; color: #fff; background: #184d78; box-shadow: 0 4px 0 #ca741d; font: 900 16px ui-sans-serif,system-ui,sans-serif; }
.feedback-numbered-body { min-height: 42px; border-left: 4px solid #dc7a18; border-radius: 0 13px 13px 0; padding: 10px 13px; color: #263957; background: #fff1d2; white-space: pre-wrap; }
.teacher-feedback-live-preview { margin-top: 12px; overflow: hidden; border: 1px solid rgba(48,71,148,.2); border-radius: 15px; background: #fffdf8; box-shadow: 0 8px 20px rgba(39,39,87,.07); }
.teacher-feedback-live-preview[hidden] { display: none; }
.teacher-feedback-live-preview-head { border-bottom: 1px solid rgba(48,71,148,.12); padding: 9px 12px; display: flex; align-items: center; justify-content: space-between; gap: 10px; color: #304794; background: #f1f5ff; font: 800 11px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-live-preview-head strong { font: inherit; letter-spacing: .03em; }
.teacher-feedback-live-preview-head span { border-radius: 999px; padding: 4px 8px; color: #184d78; background: #fff; }
.teacher-feedback-live-preview-content { padding: 13px; color: var(--ink); font: calc(16px * var(--submission-text-scale))/1.7 Georgia,"Noto Serif TC Local",serif; }
.teacher-feedback-live-preview-content.is-error { color: #9e3c42; background: #fff4f3; }
.teacher-feedback-rich-content mark,
.teacher-feedback-rich-editor mark { border-radius: .2em; padding: .03em .08em; color: inherit; }
.teacher-feedback-rich-content mark[data-highlight="yellow"],
.teacher-feedback-rich-editor mark[data-highlight="yellow"] { background: #fff1a8; }
.teacher-feedback-rich-content mark[data-highlight="orange"],
.teacher-feedback-rich-editor mark[data-highlight="orange"] { background: #ffd3a1; }
.teacher-feedback-rich-content mark[data-highlight="blue"],
.teacher-feedback-rich-editor mark[data-highlight="blue"] { background: #cfe6ff; }
.teacher-feedback-rich-content mark[data-highlight="green"],
.teacher-feedback-rich-editor mark[data-highlight="green"] { background: #d5f2d5; }
.teacher-feedback-rich-content mark[data-highlight="red"],
.teacher-feedback-rich-editor mark[data-highlight="red"] { background: #ffc7c7; }
::highlight(writing-feedback-multi-selection) { color: inherit; background: rgba(91, 104, 204, .28); }
.teacher-feedback-multi-selection-overlay { position: fixed; z-index: 50; border-radius: 3px; background: rgba(91,104,204,.28); box-shadow: inset 0 0 0 1px rgba(72,84,179,.16); pointer-events: none; }
.teacher-feedback-field { padding: 20px; display: grid; gap: 9px; background: #fffdf9; }
.teacher-feedback-field > span,
.teacher-feedback-fragment-heading > div { color: var(--ink); font-size: 20px; font-weight: 850; }
.teacher-feedback-field textarea,
.teacher-feedback-edit-pair textarea { width: 100%; border: 1px solid rgba(39,39,87,.16); border-radius: 12px; padding: 13px 14px; color: var(--ink); background: #fff; resize: none; font: calc(16px * var(--submission-text-scale))/1.7 Georgia,"Noto Serif TC Local",serif; }
.teacher-feedback-fragment-heading { border-top: 1px solid rgba(39,39,87,.11); padding: 20px; background: #fff7ea; }
.teacher-feedback-fragment-heading p { margin: 6px 0 0; color: var(--ink-soft); font-size: 12px; line-height: 1.55; }
.teacher-feedback-edit-head { margin-bottom: 9px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.teacher-feedback-row-actions { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 7px; }
.teacher-feedback-clear { border: 1px solid rgba(158,60,66,.18); border-radius: 999px; padding: 6px 9px; color: #9e3c42; background: #fff4f3; cursor: pointer; font: 800 10px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-insert { border: 1px solid rgba(48,71,148,.2); border-radius: 999px; padding: 6px 9px; color: #304794; background: #f1f5ff; cursor: pointer; font: 800 10px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-rich-editor { width: 100%; min-height: 72px; border: 1px solid rgba(39,39,87,.16); border-radius: 12px; padding: 13px 14px; color: var(--ink); background: #fff; overflow-wrap: anywhere; white-space: pre-wrap; font: calc(16px * var(--submission-text-scale))/1.7 Georgia,"Noto Serif TC Local",serif; }
.teacher-feedback-comment .teacher-feedback-rich-editor,
.teacher-feedback-suggestion .teacher-feedback-rich-editor { min-height: 130px; margin-top: 9px; }
.teacher-feedback-rich-editor:focus { outline: 0; border-color: #6176cf; box-shadow: 0 0 0 4px rgba(97,118,207,.12); }
.teacher-feedback-rich-editor:empty::before { color: #9aa0ae; content: attr(data-placeholder); pointer-events: none; }
.teacher-feedback-format-toolbar { position: sticky; top: var(--writing-feedback-sticky-top, 76px); z-index: 3; border-top: 1px solid rgba(39,39,87,.1); border-bottom: 1px solid rgba(39,39,87,.12); padding: 10px 20px; display: flex; align-items: center; flex-wrap: wrap; gap: 7px; background: rgba(255,255,255,.96); backdrop-filter: blur(12px); }
.teacher-feedback-format-label { margin-right: 3px; color: var(--ink-soft); font: 750 11px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-format-button,
.teacher-feedback-highlight-button { min-height: 32px; border: 1px solid rgba(39,39,87,.15); border-radius: 9px; padding: 6px 10px; color: var(--ink); background: #fff; cursor: pointer; font: 800 11px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-format-bold { font: 900 17px Georgia,serif; }
.teacher-feedback-format-italic { font: italic 850 17px Georgia,serif; }
.teacher-feedback-format-strike { font: 850 15px Georgia,serif; text-decoration: line-through; }
.teacher-feedback-multiselect-help { margin-left: auto; color: #716d80; font: 750 10px/1.4 ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-highlight-button.is-yellow { background: #fff1a8; }
.teacher-feedback-highlight-button.is-orange { background: #ffd3a1; }
.teacher-feedback-highlight-button.is-blue { background: #cfe6ff; }
.teacher-feedback-highlight-button.is-green { background: #d5f2d5; }
.teacher-feedback-highlight-button.is-red { background: #ffc7c7; }
.teacher-feedback-add { margin: 18px 20px; width: calc(100% - 40px); }
.teacher-feedback-learning-editor { border-top: 1px solid rgba(39,39,87,.13); background: #eaf7ff; }
.teacher-feedback-learning-editor.is-sentence-structure { background: #f1efff; }
.teacher-feedback-learning-editor.is-rhetorical { background: #fff2ed; }
.teacher-feedback-learning-editor.is-phrasal-verb { background: #edf8f2; }
.teacher-feedback-learning-editor.is-writing-common-expression { background: #eef7fb; }
.teacher-feedback-learning-editor.is-rhetorical-common-expression { background: #fff5e7; }
.teacher-feedback-learning-head { padding: 22px 20px 15px; }
.teacher-feedback-learning-head h3 { margin: 0; color: #1b5f85; font-size: 24px; }
.teacher-feedback-learning-editor.is-sentence-structure .teacher-feedback-learning-head h3 { color: #51449b; }
.teacher-feedback-learning-editor.is-rhetorical .teacher-feedback-learning-head h3 { color: #9a483c; }
.teacher-feedback-learning-editor.is-phrasal-verb .teacher-feedback-learning-head h3 { color: #276848; }
.teacher-feedback-learning-editor.is-writing-common-expression .teacher-feedback-learning-head h3 { color: #28617d; }
.teacher-feedback-learning-editor.is-rhetorical-common-expression .teacher-feedback-learning-head h3 { color: #98631d; }
.teacher-feedback-learning-head p { margin: 7px 0 0; color: #596d7d; font: 12px/1.6 ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-learning-list { padding: 0 20px; display: grid; gap: 12px; }
.teacher-feedback-learning-row { border: 1px solid rgba(37,107,143,.18); border-radius: 15px; padding: 14px; background: rgba(255,255,255,.82); }
.teacher-feedback-learning-row-head { margin-bottom: 9px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.teacher-feedback-learning-row-head strong { color: #1b5f85; font: 850 13px ui-sans-serif,system-ui,sans-serif; }
.is-sentence-structure .teacher-feedback-learning-row-head strong { color: #51449b; }
.is-rhetorical .teacher-feedback-learning-row-head strong { color: #9a483c; }
.is-phrasal-verb .teacher-feedback-learning-row-head strong { color: #276848; }
.is-writing-common-expression .teacher-feedback-learning-row-head strong { color: #28617d; }
.is-rhetorical-common-expression .teacher-feedback-learning-row-head strong { color: #98631d; }
.teacher-feedback-learning-row .teacher-feedback-rich-editor { min-height: 110px; }
.teacher-feedback-enhancement-row { padding: 0; overflow: hidden; background: rgba(255,255,255,.92); }
.teacher-feedback-enhancement-row > .teacher-feedback-learning-row-head { margin: 0; padding: 13px 15px; background: rgba(81,68,155,.07); }
.teacher-feedback-enhancement-row.is-rhetorical > .teacher-feedback-learning-row-head { background: rgba(154,72,60,.07); }
.teacher-feedback-enhancement-row.is-phrasal-verb > .teacher-feedback-learning-row-head { background: rgba(39,104,72,.08); }
.teacher-feedback-enhancement-row.is-writing-common-expression > .teacher-feedback-learning-row-head { background: rgba(40,97,125,.08); }
.teacher-feedback-enhancement-row.is-rhetorical-common-expression > .teacher-feedback-learning-row-head { background: rgba(152,99,29,.08); }
.teacher-feedback-enhancement-fields { display: grid; }
.teacher-feedback-enhancement-field { padding: 15px; display: grid; gap: 9px; background: #fff; }
.teacher-feedback-enhancement-field + .teacher-feedback-enhancement-field { border-top: 1px solid rgba(39,39,87,.1); }
.teacher-feedback-enhancement-field > span { color: #625e73; font: 850 11px/1.4 ui-sans-serif,system-ui,sans-serif; letter-spacing: .02em; }
.teacher-feedback-enhancement-field.is-original { background: #f8f8fa; }
.teacher-feedback-enhancement-field.is-enhancement { background: #f6f3ff; }
.teacher-feedback-enhancement-row.is-rhetorical .teacher-feedback-enhancement-field.is-enhancement { background: #fff5f1; }
.teacher-feedback-enhancement-row.is-phrasal-verb .teacher-feedback-enhancement-field.is-enhancement { background: #f0faf4; }
.teacher-feedback-enhancement-row.is-writing-common-expression .teacher-feedback-enhancement-field.is-enhancement { background: #f0f8fc; }
.teacher-feedback-enhancement-row.is-rhetorical-common-expression .teacher-feedback-enhancement-field.is-enhancement { background: #fff8ec; }
.teacher-feedback-enhancement-field.is-benefit { background: #f1faf5; }
.teacher-feedback-enhancement-field .teacher-feedback-rich-editor { min-height: 128px; background: #fff; resize: vertical; }
.teacher-feedback-enhancement-field .teacher-feedback-live-preview { margin-top: 2px; }
.teacher-feedback-learning-editor .teacher-feedback-add { margin-top: 14px; }
.teacher-feedback-sentence-picker { margin: 0 20px 22px; display: grid; gap: 10px; border: 1px solid rgba(51,116,180,.2); border-radius: 15px; padding: 13px; background: rgba(239,248,255,.86); }
.teacher-feedback-sentence-picker-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.teacher-feedback-sentence-picker-head strong { color: #164f7e; font: 850 14px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-sentence-search { width: 100%; min-height: 48px; border: 1px solid rgba(51,116,180,.22); border-radius: 12px; padding: 10px 13px; color: var(--ink); background: rgba(255,255,255,.94); font: 14px/1.4 ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-sentence-search:focus { outline: 0; border-color: #4d91c7; box-shadow: 0 0 0 3px rgba(77,145,199,.13); }
.teacher-feedback-sentence-results { height: min(244px,30dvh); max-height: 244px; display: grid; align-content: start; gap: 7px; overflow: auto; overscroll-behavior: contain; }
.teacher-feedback-sentence-result { position: relative; width: 100%; border: 1px solid rgba(51,116,180,.18); border-radius: 11px; padding: 10px 78px 10px 11px; display: grid; gap: 3px; color: #173c5c; background: rgba(255,255,255,.9); cursor: pointer; text-align: left; }
.teacher-feedback-sentence-result:hover,
.teacher-feedback-sentence-result:focus-visible { border-color: #4d91c7; outline: 0; box-shadow: 0 0 0 3px rgba(77,145,199,.13); }
.teacher-feedback-sentence-result strong { font: 850 13px/1.3 ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-sentence-result small,
.teacher-feedback-sentence-count { color: #658098; font: 11px/1.45 ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-sentence-result.is-selected { border-color: rgba(35,125,87,.25); color: #1d6249; background: #edf9f3; cursor: default; opacity: .8; }
.teacher-feedback-sentence-added { position: absolute; top: 50%; right: 11px; transform: translateY(-50%); border-radius: 999px; padding: 5px 8px; color: #1d6249; background: #d8f2e5; font: 850 10px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-sentence-selected-label { color: #5b4b43; font: 850 12px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-sentence-selected { display: grid; gap: 7px; }
.teacher-feedback-sentence-chip { min-width: 0; border: 1px solid rgba(40,115,174,.2); border-radius: 12px; padding: 7px; display: grid; grid-template-columns: auto auto minmax(0,1fr) auto; align-items: center; gap: 7px; background: rgba(255,255,255,.93); box-shadow: 0 4px 12px rgba(39,39,87,.04); }
.teacher-feedback-sentence-chip.is-dragging { border-color: #4d91c7; opacity: .55; box-shadow: 0 0 0 3px rgba(77,145,199,.13); }
.teacher-feedback-sentence-drag { color: #8796a3; cursor: grab; font: 900 15px/1 ui-sans-serif,system-ui,sans-serif; letter-spacing: -4px; }
.teacher-feedback-sentence-chip:active .teacher-feedback-sentence-drag { cursor: grabbing; }
.teacher-feedback-sentence-position { width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; color: #fff; background: #456ea0; font: 850 10px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-sentence-chip a { min-width: 0; border: 0; border-radius: 8px; padding: 8px 9px; overflow: hidden; color: #145c91; background: #eef8ff; text-decoration: none; text-overflow: ellipsis; white-space: nowrap; font: 850 12px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-sentence-chip a:hover,
.teacher-feedback-sentence-chip a:focus-visible { border-color: #4d91c7; outline: 0; background: #e3f4ff; }
.teacher-feedback-sentence-order-controls { display: flex; align-items: center; gap: 5px; }
.teacher-feedback-sentence-move { width: 32px; height: 32px; border: 1px solid rgba(48,71,148,.16); border-radius: 9px; color: #304794; background: #f1f5ff; cursor: pointer; font: 900 13px/1 ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-sentence-move:hover,
.teacher-feedback-sentence-move:focus-visible { border-color: #304794; outline: 0; box-shadow: 0 0 0 3px rgba(48,71,148,.11); }
.teacher-feedback-sentence-move:disabled { opacity: .35; cursor: not-allowed; }
.teacher-feedback-sentence-remove { width: 32px; height: 32px; flex: 0 0 32px; border: 1px solid rgba(161,52,52,.18); border-radius: 50%; color: #9b3333; background: #fff2f2; cursor: pointer; font: 900 15px/1 ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-sentence-remove:hover,
.teacher-feedback-sentence-remove:focus-visible { border-color: #9b3333; outline: 0; box-shadow: 0 0 0 3px rgba(155,51,51,.12); }
.teacher-feedback-sentence-empty { margin: 0; border: 1px dashed rgba(51,116,180,.18); border-radius: 11px; padding: 10px 11px; color: #658098; background: rgba(255,255,255,.7); font: 11px/1.5 ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-sentence-retry { justify-self: start; }
.teacher-feedback-learning-read { border-top: 1px solid rgba(39,39,87,.12); padding: 22px; background: #eaf7ff; }
.teacher-feedback-learning-read.is-sentence-structure { background: #f1efff; }
.teacher-feedback-learning-read h3 { margin: 0 0 15px; color: #1b5f85; font-size: calc(22px * var(--submission-text-scale)); }
.teacher-feedback-learning-read.is-sentence-structure h3 { color: #51449b; }
.teacher-feedback-learning-point-list { display: grid; gap: 13px; }
.teacher-feedback-learning-point { border: 1px solid rgba(39,39,87,.12); border-radius: 15px; padding: 15px; background: rgba(255,255,255,.84); }
.teacher-feedback-learning-point > strong { display: block; margin-bottom: 10px; color: #526779; font: 850 11px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-learning-links { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.teacher-feedback-learning-links a { border: 1px solid rgba(81,68,155,.22); border-radius: 999px; padding: 9px 12px; color: #51449b; background: #fff; text-decoration: none; font: 850 11px ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-learning-links a:hover,
.teacher-feedback-learning-links a:focus-visible { border-color: #51449b; background: #ebe8ff; }
.teacher-feedback-enhancement-read { border-top: 1px solid rgba(39,39,87,.12); padding: 22px; background: #f1efff; }
.teacher-feedback-enhancement-read.is-rhetorical { background: #fff2ed; }
.teacher-feedback-enhancement-read.is-phrasal-verb { background: #edf8f2; }
.teacher-feedback-enhancement-read.is-writing-common-expression { background: #eef7fb; }
.teacher-feedback-enhancement-read.is-rhetorical-common-expression { background: #fff5e7; }
.teacher-feedback-enhancement-read > h3 { margin: 0 0 15px; color: #51449b; font-size: calc(22px * var(--submission-text-scale)); }
.teacher-feedback-enhancement-read.is-rhetorical > h3 { color: #9a483c; }
.teacher-feedback-enhancement-read.is-phrasal-verb > h3 { color: #276848; }
.teacher-feedback-enhancement-read.is-writing-common-expression > h3 { color: #28617d; }
.teacher-feedback-enhancement-read.is-rhetorical-common-expression > h3 { color: #98631d; }
.teacher-feedback-enhancement-read-list { display: grid; gap: 15px; }
.teacher-feedback-enhancement-card { overflow: hidden; border: 1px solid rgba(81,68,155,.18); border-radius: 16px; background: #fff; box-shadow: 0 8px 22px rgba(39,39,87,.06); }
.is-rhetorical .teacher-feedback-enhancement-card { border-color: rgba(154,72,60,.2); }
.is-phrasal-verb .teacher-feedback-enhancement-card { border-color: rgba(39,104,72,.2); }
.is-writing-common-expression .teacher-feedback-enhancement-card { border-color: rgba(40,97,125,.2); }
.is-rhetorical-common-expression .teacher-feedback-enhancement-card { border-color: rgba(152,99,29,.2); }
.teacher-feedback-enhancement-card-title { display: block; padding: 11px 14px; color: #51449b; background: #e8e4ff; font: 850 12px ui-sans-serif,system-ui,sans-serif; }
.is-rhetorical .teacher-feedback-enhancement-card-title { color: #8d4035; background: #ffe2da; }
.is-phrasal-verb .teacher-feedback-enhancement-card-title { color: #276848; background: #ddf3e6; }
.is-writing-common-expression .teacher-feedback-enhancement-card-title { color: #28617d; background: #deeff7; }
.is-rhetorical-common-expression .teacher-feedback-enhancement-card-title { color: #8b5815; background: #ffebc8; }
.teacher-feedback-enhancement-band { padding: 14px; display: grid; grid-template-columns: minmax(135px,.28fr) minmax(0,1fr); align-items: start; gap: 12px; }
.teacher-feedback-enhancement-band + .teacher-feedback-enhancement-band { border-top: 1px solid rgba(39,39,87,.09); }
.teacher-feedback-enhancement-band.is-original { background: #f8f8fa; }
.teacher-feedback-enhancement-band.is-enhancement { background: #f7f4ff; }
.is-rhetorical .teacher-feedback-enhancement-band.is-enhancement { background: #fff6f2; }
.is-phrasal-verb .teacher-feedback-enhancement-band.is-enhancement { background: #f0faf4; }
.is-writing-common-expression .teacher-feedback-enhancement-band.is-enhancement { background: #f0f8fc; }
.is-rhetorical-common-expression .teacher-feedback-enhancement-band.is-enhancement { background: #fff8ec; }
.teacher-feedback-enhancement-band.is-benefit { background: #f1faf5; }
.teacher-feedback-enhancement-band > span { color: #615c70; font: 850 11px/1.45 ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-enhancement-band .teacher-feedback-rich-content { min-width: 0; white-space: pre-wrap; overflow-wrap: anywhere; font-size: calc(16px * var(--submission-text-scale)); line-height: 1.72; }
.teacher-feedback-enhancement-band .teacher-feedback-rich-content.is-empty { color: #9793a2; font-style: italic; }
.teacher-feedback-enhancement-read .teacher-feedback-sentence-picker-readonly { margin: 17px 0 0; border-color: rgba(81,68,155,.2); background: rgba(255,255,255,.86); }
.teacher-feedback-sentence-picker-readonly .teacher-feedback-sentence-picker-head { align-items: flex-start; flex-direction: column; }
.teacher-feedback-sentence-picker-readonly .teacher-feedback-sentence-selected-label { color: #51449b; }
.teacher-feedback-sentence-readonly-row { grid-template-columns: auto minmax(0,1fr); padding: 9px; }
.teacher-feedback-sentence-readonly-row a { border: 0; border-radius: 9px; padding: 11px 12px; white-space: normal; line-height: 1.5; }
.teacher-feedback-save-status { margin: 0 20px 12px; }
.teacher-feedback-actions { position: sticky; bottom: 0; z-index: 2; border-top: 1px solid rgba(39,39,87,.13); padding: 14px 20px; display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 9px; background: rgba(255,253,249,.96); backdrop-filter: blur(12px); }
.teacher-feedback-actions button { min-width: 150px; }
.teacher-feedback-delete { margin-left: auto; }
.teacher-feedback-unavailable { margin: 22px 0 0; border: 1px solid rgba(158,60,66,.2); border-radius: 12px; padding: 13px 15px; background: #fff4f3; }
.teacher-feedback-transcriptions { border-top: 1px solid rgba(39,39,87,.13); padding: 22px; display: grid; gap: 16px; background: #faf9f5; }
.teacher-feedback-transcription-head h3 { margin: 0; color: var(--ink); font-size: 22px; }
.teacher-feedback-transcription-head p { margin: 6px 0 0; color: var(--ink-soft); font: 12px/1.6 ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-transcription-improved { border: 1px solid rgba(48,71,148,.18); border-radius: 15px; padding: 17px; background: #eef4ff; }
.teacher-feedback-transcription-field { display: grid; gap: 9px; }
.teacher-feedback-transcription-field > span { color: #304794; font-size: 17px; font-weight: 850; }
.teacher-feedback-transcription-field textarea { width: 100%; min-height: 220px; border: 1px solid rgba(48,71,148,.22); border-radius: 14px; padding: 15px; color: var(--ink); background: #fff; resize: vertical; font: calc(16px * var(--submission-text-scale))/1.8 Georgia,"Noto Serif TC Local",serif; }
.teacher-feedback-transcription-field textarea:focus { outline: 0; border-color: #6176cf; box-shadow: 0 0 0 4px rgba(97,118,207,.12); }
.teacher-feedback-model-reference { margin: 3px 0; background: #f5f8ff; }
.teacher-feedback-model-unavailable { margin: 0; border: 1px dashed rgba(39,39,87,.15); border-radius: 13px; padding: 14px; color: var(--ink-soft); background: #fff; font: 12px/1.6 ui-sans-serif,system-ui,sans-serif; }
.teacher-feedback-transcription-actions { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px 18px; }
.teacher-feedback-transcription-actions .form-status { flex: 1 1 260px; margin: 0; }
.teacher-feedback-transcription-actions .primary-button { min-width: 180px; }
.feedback-bookmark-library { padding: 26px; color: var(--ink); background: rgba(251,247,239,.97); }
.feedback-bookmark-list { display: grid; gap: 15px; }
.feedback-bookmark-card { overflow: hidden; border: 1px solid rgba(39,39,87,.13); border-radius: 17px; background: #fffdf9; box-shadow: 0 10px 25px rgba(39,39,87,.06); }
.feedback-bookmark-card-head { padding: 13px 15px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 8px 14px; color: #fff; background: #304c75; }
.feedback-bookmark-card-head strong { font-size: 15px; }
.feedback-bookmark-card-head button { border: 1px solid rgba(255,255,255,.28); border-radius: 999px; padding: 7px 10px; color: #fff; background: rgba(255,255,255,.12); cursor: pointer; font: 800 10px ui-sans-serif,system-ui,sans-serif; }
.feedback-bookmark-card-original,
.feedback-bookmark-card-comment,
.feedback-bookmark-card-suggestion { padding: 15px; }
.feedback-bookmark-card-original { background: #f1f2f6; }
.feedback-bookmark-card-comment { border-top: 1px solid rgba(39,39,87,.1); }
.feedback-bookmark-card-suggestion { border-top: 1px dashed rgba(34,113,76,.18); background: #effaf3; }
.feedback-bookmark-card section > strong { display: block; margin-bottom: 8px; color: #66637c; font: 850 10px ui-sans-serif,system-ui,sans-serif; }
.feedback-bookmark-card section > div { white-space: pre-wrap; overflow-wrap: anywhere; font-size: 15px; line-height: 1.7; }
.feedback-bookmark-card-footer { border-top: 1px solid rgba(39,39,87,.09); padding: 11px 15px; display: flex; justify-content: flex-end; background: #faf8f4; }
.feedback-bookmark-open { border: 0; border-radius: 999px; padding: 8px 11px; color: #304794; background: #edf1ff; cursor: pointer; font: 850 10px ui-sans-serif,system-ui,sans-serif; }
.utility-empty { min-height: 410px; display: grid; place-items: center; align-content: center; text-align: center; color: var(--ink-soft); }
.utility-empty span { color: var(--orange); font-size: 48px; }
.utility-empty h2 { margin: 13px 0 3px; color: var(--ink); }
.utility-empty p { margin: 0; }

.grammar-summary-panel { padding-top: 28px; }
.grammar-summary-metrics { margin-bottom: 24px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.grammar-summary-metrics article { border: 1px solid rgba(39,39,87,.12); border-radius: 18px; padding: 20px; display: grid; gap: 4px; background: #fffdf9; }
.grammar-summary-metrics strong { color: var(--orange-deep); font-size: 38px; }
.grammar-summary-metrics span { color: var(--ink-soft); font-size: 13px; }
.grammar-summary-list { display: grid; gap: 12px; }
.grammar-summary-row { overflow: hidden; border: 1px solid rgba(39,39,87,.12); border-radius: 16px; background: #fffdf9; }
.grammar-summary-head { padding: 17px 18px; display: grid; grid-template-columns: minmax(0, 1fr) auto auto; align-items: center; gap: 8px 12px; cursor: pointer; list-style: none; }
.grammar-summary-head::-webkit-details-marker { display: none; }
.grammar-summary-head::after { content: "+"; grid-column: 3; color: #8a8697; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 18px; font-weight: 800; }
.grammar-summary-row[open] .grammar-summary-head::after { content: "−"; }
.grammar-summary-copy { display: grid; gap: 6px; }
.grammar-summary-row h3 { margin: 0; font-size: 17px; }
.grammar-summary-row p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.grammar-summary-row .grammar-summary-head > strong { min-width: 58px; border-radius: 999px; padding: 9px 12px; color: #8a4317; background: var(--orange-pale); text-align: center; }
.grammar-summary-row small { color: #8a8697; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 10px; }
.grammar-history-list { border-top: 1px solid rgba(39,39,87,.1); padding: 16px; display: grid; gap: 14px; background: #f8f6f2; }
.grammar-history-card { overflow: hidden; border: 1px solid rgba(39,39,87,.13); border-radius: 16px; background: #fffdf9; box-shadow: 0 9px 24px rgba(39,39,87,.06); }
.grammar-history-card-head { padding: 12px 14px; display: flex; align-items: center; flex-wrap: wrap; gap: 7px 12px; background: #f0ecf8; }
.grammar-history-card-head strong { margin-right: auto; color: #3b3969; font-size: 13px; }
.grammar-history-card-head time,
.grammar-history-student,
.grammar-history-rule { color: #77738c; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 10px; }
.grammar-history-student { border-radius: 999px; padding: 4px 8px; color: #754113; background: #fff0ce; font-weight: 800; }
.grammar-history-rule { width: 100%; overflow-wrap: anywhere; }
.grammar-history-original { margin: 0; padding: 16px 16px 12px; overflow-wrap: anywhere; font-size: 16px; line-height: 1.65; }
.grammar-history-original mark { border-radius: 4px; padding: 1px 3px; color: #852a31; background: #ffd7d4; }
.grammar-history-replacement { margin: 0 16px 14px; border-left: 4px solid var(--green); border-radius: 10px; padding: 11px 12px; background: #eef8f2; }
.grammar-history-replacement small,
.grammar-history-explanation small { display: block; margin-bottom: 5px; color: #77738c; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 10px; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.grammar-history-replacement p,
.grammar-history-explanation p { margin: 0; overflow-wrap: anywhere; font-size: 13px; line-height: 1.6; }
.grammar-history-explanation { padding: 0 16px 15px; color: #55516a; }
.grammar-history-source { border-top: 1px solid rgba(39,39,87,.09); padding: 11px 14px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 9px 14px; background: #faf8f4; }
.grammar-history-source span { color: #77738c; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 10px; }
.grammar-history-source-button { border: 1px solid rgba(39,39,87,.16); border-radius: 999px; padding: 7px 10px; color: var(--midnight); background: #fff; cursor: pointer; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 10px; font-weight: 800; }
.grammar-history-source-button:hover,
.grammar-history-source-button:focus-visible { border-color: var(--orange); background: #fff6e8; }
.grammar-history-more { justify-self: center; }

.admin-review-list { display: grid; gap: 14px; }
.admin-review-more { margin: 20px auto 0; }

.admin-search { min-width: min(100%, 330px); display: grid; gap: 7px; }
.admin-search span { color: #f1c49b; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 11px; font-weight: 800; }
.admin-search-tools { min-width: min(100%, 360px); display: grid; gap: 10px; justify-items: stretch; }
.admin-name-sort { justify-self: end; border: 1px solid rgba(255,255,255,.25); color: #fff; background: rgba(255,255,255,.1); box-shadow: none; }

.topic-picker-dialog { width: min(920px, calc(100% - 28px)); max-height: min(820px, calc(100vh - 28px)); border: 0; border-radius: 25px; padding: 0; color: var(--ink); background: var(--paper); box-shadow: 0 30px 100px rgba(5,5,24,.55); }
.topic-picker-dialog::backdrop { background: rgba(12,12,34,.72); backdrop-filter: blur(5px); }
.topic-picker-shell { padding: clamp(20px, 4vw, 36px); }
.topic-picker-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.topic-picker-head h2 { margin: 0; font-size: clamp(25px, 4vw, 39px); }
.dialog-close { width: 42px; height: 42px; border: 0; border-radius: 50%; color: var(--midnight); background: #ece8e1; cursor: pointer; font-family: ui-sans-serif, system-ui, sans-serif; font-size: 25px; }
.topic-picker-search { margin-top: 22px; display: grid; gap: 8px; color: var(--ink-soft); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 12px; font-weight: 800; }
.topic-picker-search input { width: 100%; min-height: 52px; border: 1px solid rgba(39,39,87,.17); border-radius: 15px; padding: 12px 15px; color: var(--ink); background: #fffefa; outline: none; }
.topic-picker-search input:focus { border-color: var(--orange); box-shadow: 0 0 0 4px rgba(232,123,44,.13); }
.topic-picker-note { margin: 12px 0 18px; color: var(--ink-soft); font-size: 12px; line-height: 1.6; }
.topic-picker-results { max-height: min(560px, 58vh); overflow: auto; display: grid; gap: 12px; padding-right: 5px; }
.topic-picker-result { border: 1px solid rgba(39,39,87,.13); border-radius: 17px; padding: 16px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px 16px; color: var(--ink); background: #fffdf9; text-align: left; cursor: pointer; }
.topic-picker-result:hover,
.topic-picker-result:focus-visible { border-color: var(--orange); background: #fff6e8; }
.topic-picker-result strong { font-size: 16px; line-height: 1.45; }
.topic-picker-result small { grid-column: 1; color: var(--ink-soft); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 11px; }
.topic-picker-result em { grid-row: 1 / span 2; grid-column: 2; align-self: center; color: var(--orange-deep); font-family: ui-sans-serif, system-ui, sans-serif; font-size: 12px; font-style: normal; font-weight: 800; }
.topic-picker-result-preview { grid-column: 1 / -1; margin-top: 5px; display: grid; gap: 10px; }
.topic-picker-result-preview p { margin: 0; color: #4f4c62; font-size: 13px; line-height: 1.55; }
.topic-picker-result-images { display: flex; gap: 8px; overflow-x: auto; }
.topic-picker-result-images img { width: min(240px, 58vw); max-height: 180px; border: 1px solid rgba(39,39,87,.13); border-radius: 12px; object-fit: contain; background: #fff; }
.random-topic-dialog { width: min(760px, calc(100% - 28px)); }
.random-topic-shell { display: grid; gap: 18px; }
.random-topic-shell .topic-picker-note { margin: 0; }
.random-topic-choices { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; }
.random-topic-choices button { min-height: 132px; border: 1px solid rgba(39,39,87,.14); border-radius: 18px; padding: 18px; display: grid; align-content: center; gap: 7px; color: var(--ink); background: #fffdf9; text-align: left; cursor: pointer; }
.random-topic-choices button:hover,
.random-topic-choices button:focus-visible { border-color: var(--orange); background: #fff5e6; box-shadow: 0 10px 28px rgba(39,39,87,.08); transform: translateY(-1px); }
.random-topic-choices button:disabled { opacity: .5; cursor: not-allowed; box-shadow: none; transform: none; }
.random-topic-choices strong { font-size: 20px; }
.random-topic-choices span { color: var(--ink-soft); font-size: 12px; line-height: 1.45; }
.random-topic-choices em { color: var(--orange-deep); font: 800 11px/1.35 ui-sans-serif,system-ui,sans-serif; font-style: normal; }
.random-topic-status { min-height: 20px; margin: 0; }

.empty-state { margin: 0; padding: 28px 12px; color: var(--ink-soft); text-align: center; }
.loading-state { padding: 28px 12px; display: grid; place-items: center; gap: 10px; color: var(--ink-soft); }
.loading-spinner { width: 24px; height: 24px; border: 3px solid rgba(39,39,87,.14); border-top-color: var(--orange); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.toast {
  position: fixed;
  left: 50%;
  bottom: max(26px, env(safe-area-inset-bottom));
  z-index: 1000;
  max-width: min(520px, calc(100% - 32px));
  border: 1px solid rgba(255,255,255,.17);
  border-radius: 15px;
  padding: 13px 18px;
  color: #fff;
  background: rgba(18,18,47,.94);
  box-shadow: 0 18px 42px rgba(6,6,24,.36);
  transform: translateX(-50%);
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 13px;
}

@media (max-width: 1040px) {
  .login-layout { grid-template-columns: 1fr; }
  .login-hero { min-height: 650px; }
  .writing-layout { grid-template-columns: 1fr; }
  .grammar-panel { position: static; max-height: none; }
  .archive-layout { grid-template-columns: 1fr; }
  .archive-list-panel { position: static; max-height: none; }
  .submission-progress-grid { grid-template-columns: 1fr; }
  .admin-student-layout { grid-template-columns: minmax(240px,.75fr) minmax(0,1.25fr); }
  .admin-student-layout > .submission-detail { grid-column: 1 / -1; }
}

@media (max-width: 720px) {
  .admin-manual-topic-slots,.admin-manual-topic-detail-grid { grid-template-columns: 1fr; }
  .app-shell { width: min(100% - 22px, 1480px); padding-top: 18px; }
  .glass-panel { border-radius: 21px; }
  .login-hero { min-height: 570px; padding: 26px; }
  .hero-parchment { top: 45px; right: 28px; width: min(77%, 330px); }
  .hero-copy { width: 100%; }
  .hero-copy h1 { font-size: clamp(40px, 14vw, 63px); }
  .hero-copy > p:last-child { font-size: 14px; }
  .login-panel { padding: 25px 20px; }
  .login-heading { gap: 12px; }
  .section-number { font-size: 39px; }
  .workspace-hero,
  .utility-hero { padding: 25px 20px; align-items: stretch; flex-direction: column; }
  .local-checker-pill { min-width: 0; }
  .prompt-panel,
  .editor-panel,
  .grammar-panel,
  .archive-list-panel,
  .submission-detail,
  .grammar-summary-panel,
  .admin-review-panel { padding: 20px 16px; }
  .submission-progress-dashboard { padding: 20px 16px; }
  .floating-writing-topic { top: calc(var(--writing-feedback-sticky-top, 76px) + 7px); width: calc(100% - 22px); border-radius: 15px; }
  .floating-writing-topic-toggle { min-height: 52px; padding: 8px 12px; gap: 9px; }
  .floating-writing-topic-label small { display: none; }
  .floating-writing-topic-label strong { font-size: 12px; }
  .floating-writing-topic-preview { font-size: 12px; }
  .floating-writing-topic-content { max-height: min(48vh,410px); padding: 13px 14px 15px; }
  .section-heading-actions { align-items: flex-end; flex-direction: column-reverse; }
  .topic-picker-actions { justify-content: flex-end; }
  .editor-heading { align-items: flex-start; }
  .editor-heading-tools { align-items: flex-end; flex-direction: column-reverse; }
  .model-essay-mini-panel { width: 100%; margin-top: 0; grid-template-columns: 1fr; }
  .model-essay-mini-panel .model-essay-paragraph-open { justify-self: start; }
  .writing-stopwatch { width: 100%; min-width: 0; flex-wrap: wrap; }
  .writing-stopwatch-actions { width: 100%; margin-left: 0; }
  .writing-stopwatch-actions button { flex: 1; }
  .writing-timer-settings { grid-template-columns: 1fr; }
  .writing-timer-duration { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .writing-timer-duration label { grid-template-columns: 1fr; gap: 2px; }
  .writing-timer-duration input { padding: 3px 0; text-align: left; }
  .writing-timer-head { align-items: flex-start; flex-direction: column; }
  .writing-timer-display { align-self: stretch; text-align: center; }
  .writing-timer-actions .small-button { flex: 1 1 calc(50% - 8px); }
  .grammar-panel-heading { align-items: flex-start; }
  .grammar-panel-controls { align-items: flex-end; flex-direction: column; }
  .topic-picker-result { grid-template-columns: 1fr; }
  .topic-picker-result em { grid-row: auto; grid-column: 1; }
  .random-topic-choices { grid-template-columns: 1fr; }
  .random-topic-choices button { min-height: 110px; }
  .topic-reference-summary { grid-template-columns: 1fr auto; }
  .topic-reference-book { grid-column: 1 / -1; justify-self: start; }
  .topic-reference-content { padding: 13px; }
  .topic-reference-paragraph { padding: 13px; }
  .topic-reference-table { min-width: 500px; }
  .writing-field textarea { padding: 16px; }
  .writing-field-main textarea { min-height: 430px; font-size: 17px; }
  .grammar-summary-metrics { grid-template-columns: 1fr; }
  .draft-archive-head,.draft-row { align-items: stretch; flex-direction: column; }
  .draft-row-actions { justify-content: stretch; }
  .draft-row-actions .small-button { flex: 1; }
  .admin-student-layout { grid-template-columns: 1fr; }
  .admin-student-layout > .submission-detail { grid-column: auto; }
  .submission-detail { min-height: 360px; }
  .submission-detail-actions { align-items: stretch; }
  .feedback-font-scale-control { width: 100%; justify-content: space-between; }
  .feedback-font-scale-select { flex: 1; justify-content: center; }
  .teacher-feedback-edit-head { align-items: flex-start; flex-direction: column; }
  .teacher-feedback-row-actions { width: 100%; justify-content: flex-start; }
  .teacher-feedback-format-toolbar { padding-inline: 12px; }
  .teacher-feedback-multiselect-help { width: 100%; margin-left: 0; }
  .teacher-feedback-enhancement-band { grid-template-columns: 1fr; }
  .teacher-feedback-sentence-chip { grid-template-columns: auto auto minmax(0,1fr); }
  .teacher-feedback-sentence-order-controls { grid-column: 2 / -1; justify-content: flex-end; }
  .teacher-feedback-sentence-readonly-row { grid-template-columns: auto minmax(0,1fr); }
  .teacher-feedback-sentence-picker-head { align-items: flex-start; flex-direction: column; }
  .utility-empty { min-height: 300px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}