:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --line: #dce3ef;
  --text: #1f2937;
  --muted: #667085;
  --brand: #1d4ed8;
  --brand-soft: #dbeafe;
  --danger: #dc2626;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
}

.topbar {
  height: 56px;
  padding: 0 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #0f172a;
  color: #fff;
}

.brand { font-weight: 700; letter-spacing: 0; }
.nav a {
  color: #cbd5e1;
  text-decoration: none;
  margin-left: 14px;
}
.nav a:hover { color: #fff; }
.user-name {
  margin-left: 14px;
  color: #fff;
  font-size: 13px;
}

.auth-panel {
  width: min(100%, 420px);
  margin: 8vh auto 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}
.auth-head h1 {
  margin: 0;
  font-size: 22px;
}
.auth-head p {
  margin: 8px 0 20px;
  color: var(--muted);
  font-size: 13px;
}
.auth-form {
  display: grid;
  gap: 8px;
}
.auth-form label {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
}
.auth-form .btn { margin-top: 10px; }
.auth-tip {
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 12px;
}
.auth-error,
.auth-success {
  margin-bottom: 12px;
  padding: 9px 10px;
  border-radius: 6px;
  font-size: 13px;
}
.auth-error {
  background: #fef2f2;
  color: #b91c1c;
}
.auth-success {
  background: #f0fdf4;
  color: #166534;
}

.page { padding: 16px; }
.toolbar {
  display: flex;
  gap: 12px;
  align-items: end;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.field { display: flex; flex-direction: column; gap: 6px; min-width: 170px; }
.field.small { min-width: 90px; width: 90px; }
.field.grow { flex: 1 1 320px; }
.field label { font-size: 12px; color: var(--muted); }
input, select, button, textarea {
  font: inherit;
}
input, select, textarea {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  background: #fff;
  color: var(--text);
}
textarea { min-height: 42px; resize: vertical; }
.btn {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 14px;
  background: #fff;
  cursor: pointer;
}
.btn.primary {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}

.subject-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}
.tab {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 6px;
  padding: 8px 12px;
  cursor: pointer;
}
.tab.active {
  background: var(--brand-soft);
  border-color: #93c5fd;
  color: var(--brand);
  font-weight: 700;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(320px, 0.8fr);
  gap: 12px;
}
.publish-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) 360px;
  gap: 12px;
  align-items: start;
}
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  min-height: 72vh;
  overflow: hidden;
}
.panel.full { min-height: calc(100vh - 170px); }
.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  gap: 12px;
}
.panel-head h2 { margin: 0; font-size: 16px; }
.panel-head span { color: var(--muted); font-size: 12px; }
.publish-head { align-items: center; }
.publish-date-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.panel-label {
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
}
.publish-head-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--muted);
  font-size: 12px;
}
.publish-time {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}
.publish-time strong { color: var(--text); font-weight: 600; }
.view-filter-head {
  padding: 10px 12px 0;
  display: flex;
  align-items: center;
  gap: 12px;
}
.view-filter-head > strong {
  flex: 0 0 auto;
  font-size: 13px;
}
.view-subject-tabs {
  margin: 0;
  gap: 6px;
}
.view-subject-tabs .tab {
  padding: 6px 10px;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.subject-filter-count {
  min-width: 18px;
  padding: 1px 5px;
  border-radius: 10px;
  background: #e2e8f0;
  color: var(--muted);
  font-size: 11px;
  line-height: 16px;
  text-align: center;
}
.view-subject-tabs .tab.active .subject-filter-count {
  background: #bfdbfe;
  color: var(--brand);
}

.work-area, .type-list, .view-list, .admin-list {
  padding: 12px;
  display: grid;
  gap: 10px;
}
.subject-card-grid {
  padding: 12px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}

.publish-list {
  gap: 12px;
}

.type-card, .work-card, .view-card, .admin-card {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}
.type-card {
  padding: 12px;
  cursor: grab;
}
.type-name { font-weight: 600; }
.type-meta { margin-top: 4px; color: var(--muted); font-size: 12px; }

.drop-hint {
  border: 1px dashed #94a3b8;
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  color: var(--muted);
  background: #f8fafc;
}

.work-card {
  padding: 12px;
  display: grid;
  gap: 10px;
}
.register-row {
  display: grid;
  grid-template-columns: 42px minmax(150px, 0.9fr) minmax(260px, 2fr) 190px auto minmax(68px, auto) auto;
  gap: 10px;
  align-items: center;
  min-width: 900px;
}
.register-row > input,
.register-page-input {
  min-width: 0;
}
.register-sequence {
  text-align: center;
  font-weight: 700;
}
.register-page-input {
  display: flex;
  align-items: center;
  gap: 6px;
}
.register-page-input input {
  width: 58px;
}
.register-field-label {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}
.register-status {
  padding-right: 2px;
}
.register-status.success,
.register-status.error {
  font-size: 12px;
  white-space: nowrap;
}
.register-status.success { color: #15803d; }
.register-status.error { color: var(--danger); }
.register-add-footer {
  padding: 0 12px 12px;
}
.register-add-footer .btn {
  width: 100%;
}
.work-top {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(160px, 220px) 100px auto;
  gap: 10px;
  align-items: center;
}
.work-bottom {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.work-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}
.page-range-inputs {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.page-range-inputs input {
  min-width: 0;
  width: 100px;
}
.field-caption {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}
.page-dash { color: var(--muted); }
.js-picker-field {
  cursor: pointer;
  background: #f8fafc;
}
.pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 999px;
  background: #eff6ff;
  color: #1d4ed8;
  font-size: 12px;
}
.muted { color: var(--muted); }
.danger { color: var(--danger); }

.view-card, .admin-card {
  padding: 12px;
}
.view-row {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}
.view-index {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #bfdbfe;
  border-radius: 4px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: 13px;
  font-weight: 700;
}
.view-main {
  min-width: 0;
}
.view-inline {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  white-space: nowrap;
}
.view-title {
  flex: 0 0 auto;
  max-width: 150px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 15px;
}
.view-content {
  color: var(--text);
  line-height: 1.6;
  min-width: 40px;
  flex: 0 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.view-tags {
  display: flex;
  gap: 8px;
  align-items: center;
  flex: 0 0 auto;
  flex-wrap: nowrap;
  justify-content: flex-start;
}
.view-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1e40af;
  font-size: 12px;
}
.subject-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  display: grid;
  gap: 12px;
  overflow: hidden;
}
.subject-card-head {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  background: #f8fafc;
}
.subject-card-title {
  display: grid;
  gap: 4px;
}
.subject-card-title strong {
  font-size: 15px;
}
.subject-card-body {
  padding: 0 14px 14px;
  display: grid;
  gap: 10px;
}
.homework-mini-card {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  background: #fff;
  display: grid;
  gap: 6px;
}
.homework-mini-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: start;
}
.homework-mini-title {
  font-weight: 600;
}
.homework-mini-meta {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 12px;
  color: var(--muted);
}
.empty-note {
  padding: 14px;
  text-align: center;
  color: var(--muted);
  border: 1px dashed #cbd5e1;
  border-radius: 6px;
  background: #fafcff;
}
.number-picker[hidden] { display: none; }
.number-picker {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgb(15 23 42 / 45%);
}
.number-picker-dialog {
  width: min(100%, 360px);
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 16px 40px rgb(15 23 42 / 20%);
}
.number-picker-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}
.number-picker-head h2 {
  margin: 0;
  font-size: 16px;
}
.icon-btn {
  width: 32px;
  height: 32px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  color: var(--muted);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}
.number-picker-display {
  width: 100%;
  margin-bottom: 12px;
  text-align: right;
  font-size: 22px;
  font-weight: 700;
}
.number-keypad {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}
.number-key {
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #f8fafc;
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
}
.number-key.secondary {
  color: var(--muted);
  font-size: 13px;
}
.number-picker-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 12px;
}
.view-head, .admin-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 8px;
}
.publish-side {
  position: sticky;
  top: 16px;
}
.month-nav {
  padding: 12px 12px 0;
  display: flex;
  gap: 8px;
}
.date-grid {
  padding: 12px;
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 8px;
}
.date-btn {
  min-height: 54px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  padding: 8px 6px;
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 3px;
}
.date-btn .day {
  font-weight: 700;
}
.date-btn .count {
  font-size: 12px;
  color: var(--muted);
}
.date-btn.has-data {
  background: #dcfce7;
  border-color: #86efac;
}
.date-btn.has-data .count {
  color: #166534;
}
.date-btn.active {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}
.date-btn.active .count,
.date-btn.active .day {
  color: #fff;
}
.date-btn.today {
  box-shadow: inset 0 0 0 1px #f59e0b;
}
.subject-block {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.subject-block + .subject-block { margin-top: 12px; }
.subject-block h3 {
  margin: 0;
  padding: 10px 12px;
  font-size: 14px;
  background: #f8fafc;
  border-bottom: 1px solid var(--line);
}

@media (max-width: 980px) {
  .workspace { grid-template-columns: 1fr; }
  .publish-layout { grid-template-columns: 1fr; }
  .publish-side { position: static; }
  .work-top, .work-bottom { grid-template-columns: 1fr; }
  .date-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .topbar {
    height: auto;
    min-height: 56px;
    padding: 12px;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }
  .brand { white-space: nowrap; }
  .nav {
    width: 100%;
    display: flex;
    gap: 16px;
    overflow-x: auto;
  }
  .nav a {
    margin-left: 0;
    white-space: nowrap;
  }
  .user-name { margin-left: 0; white-space: nowrap; }
  .page { padding: 8px; }
  .btn { padding: 8px 12px; font-size: 14px; }
  .tab { padding: 7px 10px; font-size: 14px; }
  .toolbar { align-items: stretch; gap: 10px; }
  .field, .field.small, .field.grow { width: 100%; min-width: 0; }
  .toolbar .btn { width: 100%; }
  .subject-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 2px;
    margin-bottom: 10px;
  }
  .tab { flex: 0 0 auto; }
  .panel, .panel.full { min-height: 0; }
  .panel-head {
    padding: 12px;
    align-items: flex-start;
    flex-wrap: wrap;
  }
  .publish-head { gap: 6px; }
  .publish-date-title { width: 100%; }
  .publish-head-meta {
    width: 100%;
    justify-content: space-between;
    gap: 8px;
  }
  .view-filter-head {
    display: block;
    padding: 8px 10px 0;
  }
  .view-filter-head > strong {
    display: block;
    margin-bottom: 8px;
  }
  .view-subject-tabs {
    margin-bottom: 0;
    flex-wrap: wrap;
    overflow: visible;
  }
  .work-area, .type-list, .view-list, .admin-list,
  .subject-card-grid { padding: 10px; }
  .publish-main .view-list { padding: 8px; gap: 8px; }
  .publish-main .view-card { padding: 8px; }
  .publish-main .view-row { gap: 8px; }
  .publish-main .view-index {
    width: 25px;
    height: 25px;
    font-size: 12px;
  }
  .register-panel .work-area {
    overflow-x: visible;
  }
  .register-panel .work-card {
    min-width: 0;
  }
  .register-panel .register-row {
    min-width: 0;
    grid-template-columns: 56px minmax(0, 1fr) auto;
    align-items: center;
  }
  .register-panel .register-row .js-name {
    grid-column: 2 / 4;
  }
  .register-panel .register-row .js-content,
  .register-panel .register-row .register-page-input {
    grid-column: 1 / -1;
    width: 100%;
  }
  .register-panel .register-row .js-content {
    min-width: 0;
  }
  .register-panel .register-row .js-save {
    grid-column: 1;
  }
  .register-panel .register-row .register-status {
    grid-column: 2;
  }
  .register-panel .register-row .js-delete {
    grid-column: 3;
  }
  .register-add-footer {
    padding: 0 10px 10px;
  }
  .work-top {
    grid-template-columns: 1fr 1fr;
  }
  .work-top .js-name {
    grid-column: span 2;
  }
  .work-top .js-sort,
  .work-top .js-delete {
    width: 100%;
  }
  .page-range-inputs input {
    flex: 1;
    width: auto;
  }
  .field-caption { min-width: 48px; }
  .view-card { padding: 10px; }
  .view-title {
    max-width: 84px;
    font-size: 13px;
  }
  /* Let long descriptions flow to the next line on narrow screens. */
  .view-inline {
    width: 100%;
    display: block;
    overflow: visible;
    white-space: normal;
  }
  .view-title {
    display: inline-block;
    margin-right: 8px;
    vertical-align: middle;
  }
  .view-content {
    display: inline;
    min-width: 0;
    overflow: visible;
    text-overflow: clip;
    white-space: normal;
    overflow-wrap: anywhere;
    font-size: 14px;
    line-height: 1.4;
  }
  .view-tags {
    display: inline-flex;
    margin-left: 8px;
    vertical-align: middle;
  }
  .view-tag {
    padding: 2px 5px;
    font-size: 10px;
  }
  .subject-block h3 {
    padding: 10px 12px;
  }
  .month-nav { padding: 10px 10px 0; }
  .month-nav .btn { flex: 1; }
  .date-grid {
    padding: 10px;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 6px;
  }
  .date-btn {
    min-height: 50px;
    padding: 6px 4px;
  }
}