/* 族谱 — 宣纸墨色风格（参考 family 项目实现） */

:root {
  --ink: #16140f;
  --paper: #f4ede0;
  --paper-deep: #ebe1cd;
  --accent: #b4382c;
  --accent-soft: #d8c4a0;
  --rule: #1d1a14;
  --muted: #6c6453;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  min-height: 100vh;
  color: var(--ink);
  font-family: "Songti SC", "STSong", "SimSun", Georgia, serif;
  -webkit-font-smoothing: antialiased;
  /* Prevent the browser's horizontal swipe-back navigation gesture */
  overscroll-behavior-x: none;
}

body {
  background: var(--paper);
  background-image:
    radial-gradient(rgba(22, 20, 15, 0.05) 1px, transparent 1px),
    radial-gradient(rgba(22, 20, 15, 0.04) 1px, transparent 1px);
  background-size: 3px 3px, 5px 5px;
  background-position: 0 0, 1px 1px;
}

.subpage {
  padding: 20px 32px 64px;
  max-width: 1280px;
  margin: 0 auto;
}

/* Top bar — AgileDev back-to-home convention */
.top-bar {
  display: flex;
  align-items: center;
  margin-bottom: 16px;
}

.back-link {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  color: var(--accent);
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--paper);
  font-size: 22px;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  flex-shrink: 0;
}

.back-link:hover,
.back-link:focus-visible {
  background: var(--ink);
  color: var(--paper);
  outline: none;
}

.page-title {
  flex: 1;
  margin: 0;
  text-align: center;
  font-weight: 900;
  font-size: 28px;
  letter-spacing: 8px;
}

/* Layout — side tabs + scrollable main column */
.layout {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr);
  gap: 0;
  min-height: calc(100vh - 120px);
}

.side {
  border-right: 1px solid var(--rule);
  padding-top: 16px;
  background: var(--paper);
  align-self: start;
}

.layout > main {
  min-width: 0;
  padding: 16px 0 32px;
}

.side button {
  display: block;
  width: 100%;
  appearance: none;
  background: transparent;
  border: 0;
  border-bottom: 1px solid rgba(22, 20, 15, 0.15);
  padding: 18px 16px;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--ink);
  transition: background 0.2s;
}

.side button:hover {
  background: rgba(180, 56, 44, 0.06);
}

.side button[aria-selected="true"] {
  background: #dccfb0;
  color: var(--accent);
}

.pane {
  display: none;
  padding: 0 16px 32px;
}

.pane.active {
  display: block;
}

/* Action bar at the top-right of the manage pane */
.pane-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 0;
}

/* Tree (shared) */
.tree-wrap {
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  padding: 36px 24px;
  overflow-x: auto;
  position: relative;
}

/* JS-layout tree canvas — nodes are absolutely positioned */
.tree-canvas {
  position: relative;
  display: inline-block;
  min-width: 100%;
}

/* Toggle button rendered inline by JS */
.toggle-btn {
  position: absolute;
  width: 16px;
  height: 16px;
  line-height: 14px;
  text-align: center;
  font-family: "Menlo", "Monaco", monospace;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 50%;
  cursor: pointer;
  user-select: none;
  z-index: 2;
}

.toggle-btn:hover {
  background: var(--ink);
  color: var(--paper);
}

.node {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 3px;
  padding: 6px;
  border: 1px solid var(--rule);
  background: var(--paper);
  cursor: pointer;
  transition: all 0.2s;
  width: 96px;
  height: 100px;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.node:hover {
  filter: brightness(0.92);
}

/* Color by role — priority: deceased > spouse > gender */
.node.male {
  background: #cfe3f5; /* light blue */
}

.node.female {
  background: #f7d4dd; /* light pink */
}

.node.spouse {
  background: #e2d3f0; /* light purple */
  border-style: dashed;
}

.node.deceased {
  background: #cfcfcf !important;
  color: #555;
  border-color: #888;
}

.node.deceased .node-name {
  text-decoration: line-through;
}

.node.deceased .node-meta {
  color: #777;
}

.node-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  overflow: hidden;
}

.node-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.node-name {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  line-height: 1.1;
  white-space: nowrap;
}

.node-order {
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 2px;
  line-height: 1;
  min-height: 10px;
}

.node-order:empty {
  display: none;
}

.node.deceased .node-order {
  color: #888;
}

.node-meta {
  font-family: "Menlo", "Monaco", monospace;
  font-size: 9px;
  color: var(--muted);
  letter-spacing: 1px;
}

/* Modal */
.mask {
  position: fixed;
  inset: 0;
  background: rgba(22, 20, 15, 0.55);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 24px;
}

.mask.show {
  display: flex;
}

.modal {
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 24px 28px;
  width: 100%;
  max-width: 460px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 6px 6px 0 var(--rule);
}

.modal h4 {
  font-size: 18px;
  letter-spacing: 4px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 8px;
  margin-bottom: 16px;
}

.modal .row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 12px;
}

.modal label {
  font-family: "Menlo", "Monaco", monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
}

.modal input,
.modal select {
  appearance: none;
  border: 1px solid var(--rule);
  background: var(--paper-deep);
  padding: 8px 10px;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  border-radius: 0;
}

.modal input[type="file"] {
  padding: 6px;
  background: transparent;
}

.modal .actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 18px;
  border-top: 1px solid var(--rule);
  padding-top: 14px;
}

.btn {
  appearance: none;
  border: 1px solid var(--rule);
  background: var(--paper);
  padding: 8px 16px;
  font-family: inherit;
  font-size: 13px;
  letter-spacing: 3px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn:hover {
  background: var(--ink);
  color: var(--paper);
}

.btn.primary {
  background: var(--accent);
  color: var(--paper);
  border-color: var(--accent);
}

.btn.primary:hover {
  background: var(--ink);
  border-color: var(--ink);
}

.btn.danger {
  color: var(--accent);
}

.btn.danger:hover {
  background: var(--accent);
  color: var(--paper);
}

.empty {
  text-align: center;
  padding: 80px 20px;
  color: var(--muted);
  font-style: italic;
  font-size: 18px;
}

@media (max-width: 760px) {
  .subpage {
    padding: 16px 16px 48px;
  }

  .layout {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .side {
    display: flex;
    border-right: 0;
    border-bottom: 1px solid var(--rule);
    padding-top: 0;
  }

  .side button {
    flex: 1;
    border-right: 1px solid rgba(22, 20, 15, 0.15);
    border-bottom: 0;
  }

  .side button:last-child {
    border-right: 0;
  }
}

/* ---------- Hub page (level 2: feature collection) ---------- */
.hub-main {
  max-width: 720px;
  margin: 56px auto 0;
}

.hub-intro {
  text-align: center;
  color: var(--muted);
  font-style: italic;
  letter-spacing: 4px;
  margin-bottom: 36px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 44px 24px;
  border: 1px solid var(--rule);
  background: var(--paper);
  box-shadow: 4px 4px 0 rgba(22, 20, 15, 0.15);
  text-decoration: none;
  color: var(--ink);
  transition: all 0.2s;
}

.feature-card:hover,
.feature-card:focus-visible {
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-3px);
  outline: none;
}

.feature-icon {
  font-size: 40px;
  line-height: 1;
}

.feature-name {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 6px;
}

.feature-desc {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 2px;
}

.feature-card:hover .feature-desc,
.feature-card:focus-visible .feature-desc {
  color: rgba(244, 237, 224, 0.72);
}

@media (max-width: 600px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .hub-main {
    margin-top: 32px;
  }
}

/* ---------- Create page (level 3) ---------- */
.create-main {
  max-width: 520px;
  margin: 40px auto 0;
  padding: 32px 28px 28px;
  border: 1px solid var(--rule);
  background: var(--paper);
  box-shadow: 6px 6px 0 var(--rule);
}

.create-heading {
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 6px;
  text-align: center;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 12px;
  margin-bottom: 20px;
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 14px;
}

.form-row label {
  font-family: "Menlo", "Monaco", monospace;
  font-size: 10px;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
}

.form-row input,
.form-row select {
  appearance: none;
  border: 1px solid var(--rule);
  background: var(--paper-deep);
  padding: 9px 10px;
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  border-radius: 0;
}

.form-row input:focus,
.form-row select:focus {
  outline: 1px solid var(--accent);
}

.create-tip {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.7;
  letter-spacing: 1px;
  margin: 4px 0 18px;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  border-top: 1px solid var(--rule);
  padding-top: 14px;
}

.form-actions .btn {
  text-decoration: none;
  display: inline-block;
}

/* ---------- Data table (names.html / celebrities.html) ---------- */
.table-wrap {
  background: var(--paper);
  border: 1px solid var(--rule);
  padding: 0 0 8px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  border-bottom: 1px solid var(--accent-soft);
  padding: 10px 14px;
  text-align: left;
  vertical-align: top;
  line-height: 1.8;
}

.data-table thead th {
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--muted);
  border-bottom: 1px solid var(--rule);
  background: var(--paper-deep);
}

.data-table tbody tr:hover {
  background: var(--paper-deep);
}

.data-table .col-letter {
  width: 64px;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.cell-surnames .surname-link {
  display: inline-block;
  margin: 0 14px 0 0;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  cursor: pointer;
}

.cell-surnames .surname-link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.table-status {
  padding: 24px 14px;
  text-align: center;
  color: var(--muted);
  letter-spacing: 1px;
}