:root {
  --ink: #1a1714;
  --ink-soft: #3d3832;
  --paper: #f7f3ea;
  --paper-deep: #efe8da;
  --paper-card: rgba(255, 255, 255, 0.9);
  --cinnabar: #e23b2a;
  --cinnabar-bright: #ff4d3a;
  --cinnabar-soft: rgba(226, 59, 42, 0.12);
  --jade: #0f8a6b;
  --jade-soft: rgba(15, 138, 107, 0.12);
  --gold: #d4a017;
  --gold-soft: rgba(212, 160, 23, 0.18);
  --mist: rgba(26, 23, 20, 0.55);
  --line: rgba(26, 23, 20, 0.12);
  --shadow: rgba(26, 23, 20, 0.12);
  --font-display: "Kaiti SC", "STKaiti", "KaiTi", "Songti SC", "STSong", serif;
  --font-body: "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif SC", "SimSun", serif;
  --radius: 8px;
  --sidebar-w: 220px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--ink);
  font-family: var(--font-body);
  background:
    radial-gradient(900px 520px at 8% -8%, rgba(226, 59, 42, 0.14), transparent 55%),
    radial-gradient(780px 480px at 92% 4%, rgba(15, 138, 107, 0.12), transparent 50%),
    radial-gradient(640px 400px at 50% 100%, rgba(212, 160, 23, 0.08), transparent 55%),
    linear-gradient(168deg, #fffdf8 0%, var(--paper) 42%, #f0ebe0 100%);
  line-height: 1.6;
}

.ink-wash {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.28'/%3E%3C/svg%3E");
  opacity: 0.04;
  z-index: 0;
}

#app {
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  border: none;
  border-radius: var(--radius);
  padding: 0.55rem 1.1rem;
  cursor: pointer;
  color: #fff;
  background: linear-gradient(180deg, var(--cinnabar-bright), var(--cinnabar));
  box-shadow: 0 6px 16px rgba(226, 59, 42, 0.22);
  transition: transform 0.15s ease, filter 0.15s ease;
}

.btn:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.btn.ghost {
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line);
  box-shadow: none;
}

.btn.jade {
  background: linear-gradient(180deg, #1aa884, var(--jade));
  box-shadow: 0 6px 16px rgba(15, 138, 107, 0.22);
}

.btn.sm {
  padding: 0.3rem 0.7rem;
  font-size: 0.9rem;
}

.btn.danger {
  background: linear-gradient(180deg, #c94a3c, #a83228);
}

.panel {
  background: var(--paper-card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 10px 28px var(--shadow);
  padding: 1.25rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.1rem 0.55rem;
  border-radius: 999px;
  font-size: 0.82rem;
  background: var(--jade-soft);
  color: var(--jade);
}

.tag.admin {
  background: var(--cinnabar-soft);
  color: var(--cinnabar);
}

.tag.pending {
  background: rgba(212, 160, 23, 0.16);
  color: #9a7410;
}

.tag.processing {
  background: rgba(45, 110, 180, 0.12);
  color: #2d6eb4;
}

.tag.resolved {
  background: var(--jade-soft);
  color: var(--jade);
}

.tag.closed {
  background: rgba(26, 23, 20, 0.08);
  color: var(--mist);
}

.tag.muted {
  background: rgba(26, 23, 20, 0.1);
  color: #5c5650;
}

/* Login */
.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.login-card {
  width: min(420px, 100%);
  padding: 2rem 1.75rem;
}

.login-card h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.login-card .sub {
  margin: 0.4rem 0 1.5rem;
  color: var(--mist);
}

.login-switch {
  margin: 1rem 0 0;
  text-align: center;
}

.link-btn {
  border: 0;
  background: none;
  color: var(--accent, #2f5d50);
  cursor: pointer;
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 0.2em;
  padding: 0;
}

.input-with-action {
  display: flex;
  gap: 0.5rem;
  align-items: stretch;
}

.input-with-action input {
  flex: 1;
  min-width: 0;
}

.input-with-action .btn {
  flex: 0 0 auto;
  white-space: nowrap;
}

.btn-ghost {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink-soft);
}

.hidden {
  display: none !important;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1rem;
}

.form-field label {
  font-size: 0.92rem;
  color: var(--ink-soft);
}

.form-field input,
.form-field select,
.form-field textarea,
.toolbar input,
.toolbar select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.75);
  padding: 0.65rem 0.8rem;
  color: var(--ink);
  outline: none;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus,
.toolbar input:focus,
.toolbar select:focus {
  border-color: rgba(226, 59, 42, 0.45);
  box-shadow: 0 0 0 3px var(--cinnabar-soft);
}

.form-error {
  color: var(--cinnabar);
  min-height: 1.3em;
  margin: 0 0 0.8rem;
  font-size: 0.92rem;
}

/* Layout */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
}

.sidebar {
  padding: 1.25rem 1rem;
  border-right: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.4rem 0.6rem 1.2rem;
}

.brand strong {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 500;
  letter-spacing: 0.12em;
}

.brand span {
  color: var(--mist);
  font-size: 0.85rem;
}

.nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.nav a {
  padding: 0.65rem 0.8rem;
  border-radius: var(--radius);
  color: var(--ink-soft);
  transition: background 0.15s ease, color 0.15s ease;
}

.nav a:hover,
.nav a.active {
  background: var(--cinnabar-soft);
  color: var(--cinnabar);
}

.main {
  padding: 1.25rem 1.5rem 2rem;
  min-width: 0;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.topbar h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.6rem;
  letter-spacing: 0.06em;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--ink-soft);
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.stat-card {
  padding: 1.1rem 1.2rem;
}

.stat-card .label {
  color: var(--mist);
  font-size: 0.9rem;
}

.stat-card .value {
  margin-top: 0.35rem;
  font-family: var(--font-display);
  font-size: 2rem;
  line-height: 1.1;
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.section-title {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-bottom: 1rem;
  align-items: center;
}

.toolbar input,
.toolbar select {
  width: auto;
  min-width: 140px;
}

.table-wrap {
  overflow: auto;
}

table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

table.data th,
table.data td {
  padding: 0.75rem 0.65rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  white-space: nowrap;
}

table.data th {
  color: var(--mist);
  font-weight: 500;
  background: rgba(255, 255, 255, 0.45);
}

table.data td.wrap {
  white-space: normal;
  max-width: 280px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.pager {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1rem;
  color: var(--mist);
}

.table-wrap tr.row-link {
  cursor: pointer;
}

.table-wrap tr.row-link:hover {
  background: rgba(226, 59, 42, 0.06);
}

.modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(26, 23, 20, 0.35);
  display: grid;
  place-items: center;
  z-index: 50;
  padding: 1rem;
}

.modal {
  width: min(520px, 100%);
  max-height: 90vh;
  overflow: auto;
}

.modal.modal-holiday {
  width: min(560px, 100%);
}

.modal h3 {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 500;
}

.holiday-hint {
  margin: -0.35rem 0 1rem;
  font-size: 0.92rem;
}

.holiday-block-desc {
  margin: -0.25rem 0 0.55rem;
  font-size: 0.85rem;
}

.check-label {
  display: inline-flex !important;
  align-items: center;
  gap: 0.45rem;
  font-weight: 400 !important;
  cursor: pointer;
}

.check-label input {
  width: auto !important;
}

.holiday-date-block {
  margin-bottom: 1rem;
  padding: 0.85rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.55);
}

.holiday-date-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.65rem;
}

.holiday-date-head strong {
  font-weight: 600;
}

.date-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  min-height: 2rem;
  margin-bottom: 0.65rem;
}

.date-chip-empty {
  color: var(--mist);
  font-size: 0.88rem;
}

.date-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.28rem 0.45rem 0.28rem 0.55rem;
  border-radius: 999px;
  background: var(--paper-deep);
  border: 1px solid var(--line);
  font-size: 0.88rem;
}

.date-chip-x {
  border: none;
  background: transparent;
  color: var(--mist);
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 0 0.1rem;
}

.date-chip-x:hover {
  color: var(--cinnabar);
}

.date-add-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.date-add-row input[type="date"] {
  flex: 1;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.45rem 0.6rem;
  background: #fff;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  margin-top: 1rem;
}

.muted {
  color: var(--mist);
}

.toast {
  position: fixed;
  top: 1.2rem;
  right: 1.2rem;
  z-index: 80;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  background: #1a1714;
  color: #fff;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

.toast.error {
  background: #a83228;
}

@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

  .nav {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .grid-2 {
    grid-template-columns: 1fr;
  }
}

/* ========== 典籍编辑 / 预览 ========== */
.book-editor {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 1rem;
  align-items: start;
}

.book-editor-form,
.book-editor-preview {
  max-height: calc(100vh - 7.5rem);
  overflow: auto;
}

.book-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem 1rem;
  margin-bottom: 0.75rem;
}

.book-meta-grid label,
.chapter-card label,
.book-editor-form > label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.92rem;
}

.chapter-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  margin-bottom: 0.75rem;
  background: rgba(255, 255, 255, 0.55);
}

.chapter-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
}

.admin-book-preview {
  font-family: var(--font-body);
}

.admin-preview-meta h3 {
  margin: 0.45rem 0 0.25rem;
  font-family: var(--font-display);
  font-weight: 500;
}

.admin-preview-body {
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 1rem;
  margin-top: 0.85rem;
}

.admin-book-preview .book-toc {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.65rem 0.75rem;
  background: rgba(255, 255, 255, 0.5);
  align-self: start;
  max-height: 60vh;
  overflow: auto;
}

.admin-book-preview .book-toc-head {
  margin-bottom: 0.4rem;
}

.admin-book-preview .book-toc-list {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.88rem;
}

.admin-book-preview .book-chapter {
  margin: 1rem 0 0.5rem;
  font-family: var(--font-display);
  font-weight: 500;
}

.admin-book-preview .book-line {
  margin: 0.2rem 0;
  line-height: 1.7;
}

@media (max-width: 1100px) {
  .book-editor {
    grid-template-columns: 1fr;
  }

  .book-editor-form,
  .book-editor-preview {
    max-height: none;
  }

  .admin-preview-body {
    grid-template-columns: 1fr;
  }
}