:root {
  --ink: #2c211b;
  --muted: #705f56;
  --paper: #fffdf9;
  --line: #e4d8cf;
  --brown: #75401f;
  --danger: #a52b24;
  --metric-start: #dbeafe;
  --metric-end: #d1fae5;
  --metric-ink: #174c4b;
  --metric-border: #aedbd0;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: linear-gradient(140deg, #edf5ff, #faf2e8 52%, #e8f7ee);
  font-family: Georgia, "PingFang TC", "Noto Serif TC", serif;
}

body[data-self-evaluation-metric="confidence"] {
  --metric-start: #ffe06b;
  --metric-end: #cde7ad;
  --metric-ink: #435320;
  --metric-border: #c3d88f;
}

body[data-self-evaluation-metric="concentration"] {
  --metric-start: #e8e8e6;
  --metric-end: #7f95c3;
  --metric-ink: #1e315d;
  --metric-border: #9daac9;
}

body[data-self-evaluation-metric="attention-span"] {
  --metric-start: #c74a70;
  --metric-end: #652b35;
  --metric-ink: #fff8fa;
  --metric-border: #873849;
}

body[data-self-evaluation-metric="stress"] {
  --metric-start: #e9dfda;
  --metric-end: #ce7866;
  --metric-ink: #5d2d24;
  --metric-border: #d59a8d;
}

body[data-self-evaluation-metric="homework-difficulty"] {
  --metric-start: #e8ddff;
  --metric-end: #8f63c5;
  --metric-ink: #382051;
  --metric-border: #aa86d4;
}

button,
input,
select { font: inherit; }

a { color: inherit; }

.header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(90, 55, 34, .14);
  background: rgba(255, 253, 249, .9);
  backdrop-filter: blur(18px);
}

.header-inner {
  width: min(1220px, calc(100% - 28px));
  min-height: 72px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  font-weight: 900;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 13px;
  object-fit: cover;
}

.back {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 14px;
  background: #fff;
  text-decoration: none;
  font-size: 13px;
  font-weight: 800;
}

main {
  width: min(1220px, calc(100% - 28px));
  margin: 0 auto;
  padding: 42px 0 78px;
}

.hero,
.panel {
  border: 1px solid rgba(255, 255, 255, .75);
  border-radius: 24px;
  background: rgba(255, 253, 249, .94);
  box-shadow: 0 18px 45px rgba(50, 35, 25, .1);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 30px;
  margin-bottom: 18px;
}

.hero::before {
  position: absolute;
  inset: 0 0 auto;
  height: 7px;
  background: linear-gradient(90deg, var(--metric-start), var(--metric-end));
  content: "";
}

.eyebrow {
  margin: 0 0 8px;
  color: #397863;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .16em;
}

h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 46px);
}

.hero p:last-child {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.panel { padding: 24px; }

.filters {
  display: grid;
  grid-template-columns: minmax(190px, 1.15fr) minmax(170px, 1fr) repeat(2, minmax(150px, .8fr)) auto;
  align-items: end;
  gap: 12px;
}

label {
  display: grid;
  gap: 6px;
  color: #59483f;
  font-size: 12px;
  font-weight: 850;
}

input,
select {
  min-height: 44px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 9px 12px;
  color: var(--ink);
  background: #fff;
}

select[name="metric"] {
  border-color: var(--metric-border);
  box-shadow: inset 5px 0 0 var(--metric-end);
}

input:focus-visible,
select:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--metric-end) 55%, white);
  outline-offset: 2px;
}

button {
  min-height: 44px;
  border: 0;
  border-radius: 12px;
  padding: 9px 16px;
  color: #fff;
  background: var(--brown);
  cursor: pointer;
  font-weight: 850;
}

button.secondary {
  color: var(--metric-ink);
  border: 1px solid var(--metric-border);
  background: linear-gradient(135deg, var(--metric-start), var(--metric-end));
}

button:disabled {
  opacity: .5;
  cursor: not-allowed;
}

.actions {
  margin: 14px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.status {
  min-height: 20px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.status[data-state="error"] { color: var(--danger); }

.table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 700px;
}

th,
td {
  padding: 13px 15px;
  border-bottom: 1px solid #eee5de;
  text-align: left;
}

th {
  color: #57443a;
  background: #f8f3ed;
  font-size: 12px;
  letter-spacing: .04em;
}

tbody tr:last-child td { border-bottom: 0; }

.rating {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--metric-ink);
  background: linear-gradient(135deg, var(--metric-start), var(--metric-end));
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .45), 0 4px 10px rgba(52, 37, 29, .12);
  font-weight: 900;
}

.empty {
  padding: 38px;
  color: var(--muted);
  text-align: center;
}

.pagination {
  margin-top: 16px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
}

.gate {
  padding: 40px;
  text-align: center;
}

@media (max-width: 1040px) {
  .filters { grid-template-columns: 1fr 1fr; }
  .filters button { grid-column: 1 / -1; }
}

@media (max-width: 800px) {
  .header-inner {
    align-items: flex-start;
    padding: 10px 0;
    flex-wrap: wrap;
  }
}

@media (max-width: 520px) {
  .filters { grid-template-columns: 1fr; }
  .filters button { grid-column: auto; }
  .panel,
  .hero { padding: 19px; }
}