/* ============================================================
   2026 冬日雙國紀行：中國 × 泰國 11 日攻略 - 樣式表
   Zero-build / Offline-friendly / Mobile-first / Dynamic Dual Themes
   ============================================================ */

:root {
  /* 基礎色盤 - 預設中國武陵源山水青翠色調 */
  --accent: #0f766e;
  --accent-strong: #115e59;
  --accent-soft: #ccfbf1;
  --accent-tint: rgba(15, 118, 110, 0.08);
  --hero-grad: linear-gradient(135deg, #0f4c5c 0%, #0f766e 55%, #1e6091 100%);

  --bg: #f4f6f8;
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #475569;
  --text-light: #64748b;

  /* 語意色 */
  --ok: #15803d;
  --ok-bg: #dcfce7;
  --warn: #b45309;
  --warn-bg: #fef3c7;
  --danger: #b91c1c;
  --danger-bg: #fee2e2;
  --info: #1d4ed8;
  --info-bg: #dbeafe;
  --purple: #6d28d9;
  --purple-bg: #ede9fe;

  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 2px 10px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.14);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", "Noto Sans TC", sans-serif;
}

/* 泰國暖陽金橘色系 */
[data-country="TH"] {
  --accent: #d97706;
  --accent-strong: #b45309;
  --accent-soft: #fef3c7;
  --accent-tint: rgba(217, 119, 6, 0.09);
  --hero-grad: linear-gradient(135deg, #9a3412 0%, #d97706 55%, #eab308 100%);
}

/* 跨國冰火轉場色系 (Day 6) */
[data-country="TRANSIT"] {
  --accent: #4f46e5;
  --accent-strong: #3730a3;
  --accent-soft: #e0e7ff;
  --accent-tint: rgba(79, 70, 229, 0.09);
  --hero-grad: linear-gradient(135deg, #0f766e 0%, #4f46e5 50%, #d97706 100%);
}

/* 深色模式 */
[data-theme="dark"] {
  --bg: #0b1120;
  --surface: #131c31;
  --surface-alt: #1b263f;
  --border: #26334d;
  --text: #f1f5f9;
  --text-muted: #cbd5e1;
  --text-light: #94a3b8;
  --accent-soft: rgba(20, 184, 166, 0.18);
  --ok: #4ade80;
  --ok-bg: rgba(34, 197, 94, 0.16);
  --warn: #fbbf24;
  --warn-bg: rgba(245, 158, 11, 0.18);
  --danger: #f87171;
  --danger-bg: rgba(239, 68, 68, 0.18);
  --info: #60a5fa;
  --info-bg: rgba(59, 130, 246, 0.18);
  --purple: #a78bfa;
  --purple-bg: rgba(139, 92, 246, 0.18);
  --shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"][data-country="TH"] {
  --accent: #f59e0b;
  --accent-soft: rgba(245, 158, 11, 0.2);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 16px 88px;
}

/* ---------------- Top Hero ---------------- */
.hero {
  background: var(--hero-grad);
  color: #fff;
  padding: 20px 16px 18px;
  transition: background 0.35s ease;
}

.hero-inner {
  max-width: 1180px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.hero-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.hero-title-wrap h1 {
  margin: 0;
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.hero-subtitle {
  margin: 4px 0 0;
  font-size: 0.9rem;
  opacity: 0.92;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(6px);
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.btn-glass {
  border: 1px solid rgba(255, 255, 255, 0.32);
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  padding: 6px 12px;
  border-radius: 10px;
  font-size: 0.84rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 0.2s, transform 0.15s;
}

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.24);
  transform: translateY(-1px);
}

.btn-glass.primary-action {
  background: #ffffff;
  color: #0f172a;
  border-color: #ffffff;
}

.btn-glass.primary-action:hover {
  background: #f1f5f9;
}

.hero-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.phase-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.phase-btn {
  border: 1px solid rgba(255, 255, 255, 0.28);
  background: rgba(0, 0, 0, 0.15);
  color: #fff;
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 0.83rem;
  font-weight: 600;
}

.phase-btn.active {
  background: #fff;
  color: #0f172a;
  border-color: #fff;
}

.traveler-control {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  background: rgba(0, 0, 0, 0.18);
  padding: 4px 10px;
  border-radius: 999px;
}

.traveler-control button {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.22);
  color: #fff;
  font-weight: 700;
  line-height: 1;
}

/* ---------------- Day Switcher Strip ---------------- */
.day-strip-wrap {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 40;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.day-strip {
  max-width: 1180px;
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.day-card-btn {
  flex: 0 0 auto;
  min-width: 132px;
  max-width: 170px;
  text-align: left;
  padding: 8px 11px;
  border-radius: 12px;
  border: 1.5px solid var(--border);
  background: var(--surface-alt);
  display: flex;
  flex-direction: column;
  gap: 3px;
  transition: all 0.2s ease;
}

.day-card-btn:hover {
  border-color: var(--accent);
}

.day-card-btn.active {
  border-color: var(--accent);
  background: var(--accent-tint);
  box-shadow: 0 0 0 2px var(--accent-tint);
}

.day-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
}

.day-card-btn.active .day-card-top {
  color: var(--accent);
}

.day-card-region {
  font-size: 0.84rem;
  font-weight: 700;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.day-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.72rem;
  color: var(--text-light);
}

.status-dot {
  padding: 1px 6px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.68rem;
}

.status-dot.complete {
  background: var(--ok-bg);
  color: var(--ok);
}

.status-dot.draft {
  background: var(--warn-bg);
  color: var(--warn);
}

.add-day-pill {
  flex: 0 0 auto;
  min-width: 90px;
  border: 1.5px dashed var(--border);
  background: transparent;
  color: var(--text-muted);
  border-radius: 12px;
  padding: 8px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.add-day-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------------- Main View Navigation Tabs ---------------- */
.view-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin: 18px 0 14px;
}

.tab-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  background: var(--surface);
  padding: 5px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.tab-btn {
  border: none;
  background: transparent;
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tab-btn.active {
  background: var(--accent);
  color: #fff;
}

.badge-count {
  font-size: 0.72rem;
  padding: 1px 6px;
  border-radius: 999px;
  background: rgba(128, 128, 128, 0.18);
}

.tab-btn.active .badge-count {
  background: rgba(255, 255, 255, 0.25);
  color: #fff;
}

/* ---------------- Day Header Banner ---------------- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}

.day-header-card {
  margin-bottom: 16px;
  border-left: 5px solid var(--accent);
}

.day-header-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.day-kicker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.84rem;
  color: var(--accent);
  font-weight: 700;
}

.day-title {
  margin: 6px 0 4px;
  font-size: 1.35rem;
  font-weight: 800;
}

.day-summary {
  margin: 0;
  color: var(--text-muted);
  font-weight: 500;
}

.source-note {
  margin-top: 8px;
  font-size: 0.82rem;
  color: var(--warn);
  background: var(--warn-bg);
  padding: 6px 10px;
  border-radius: 8px;
  display: inline-block;
}

.day-header-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.btn {
  border: 1px solid var(--border);
  background: var(--surface-alt);
  color: var(--text);
  padding: 7px 13px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.18s;
}

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

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

.btn-primary:hover {
  background: var(--accent-strong);
  color: #fff;
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: transparent;
}

.btn-sm {
  padding: 4px 9px;
  font-size: 0.78rem;
}

/* 天氣與裝備條 */
.weather-bar {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  display: grid;
  grid-template-columns: 1.2fr 1.8fr;
  gap: 12px;
}

.weather-box {
  background: var(--surface-alt);
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
}

.weather-temp {
  font-weight: 800;
  font-size: 1rem;
  color: var(--accent);
}

.gear-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  background: var(--surface);
  border: 1px solid var(--border);
}

.tag.ok {
  background: var(--ok-bg);
  color: var(--ok);
  border-color: transparent;
}

.tag.skip {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: transparent;
}

.tag.backup {
  background: var(--info-bg);
  color: var(--info);
  border-color: transparent;
}

.tag.warn {
  background: var(--warn-bg);
  color: var(--warn);
  border-color: transparent;
}

/* ---------------- Grid Layout ---------------- */
.two-col {
  display: grid;
  grid-template-columns: 1.65fr 1fr;
  gap: 16px;
  align-items: start;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.section-head h2, .section-head h3 {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ---------------- Delay Simulator ---------------- */
.delay-sim {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 16px;
}

.delay-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  margin: 8px 0 10px;
}

.delay-btn {
  padding: 7px 8px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: 0.8rem;
  font-weight: 700;
  text-align: center;
  transition: all 0.15s;
}

.delay-btn.active[data-mode="normal"] {
  background: var(--ok);
  color: #fff;
  border-color: var(--ok);
}

.delay-btn.active[data-mode="le30"] {
  background: #d97706;
  color: #fff;
  border-color: #d97706;
}

.delay-btn.active[data-mode="30to60"] {
  background: #ea580c;
  color: #fff;
  border-color: #ea580c;
}

.delay-btn.active[data-mode="gt60"] {
  background: var(--danger);
  color: #fff;
  border-color: var(--danger);
}

.delay-advice {
  font-size: 0.86rem;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--surface);
  border-left: 3px solid var(--accent);
}

/* Progress Bar */
.progress-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.progress-track {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: var(--border);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 999px;
  transition: width 0.25s ease;
}

/* ---------------- Timeline ---------------- */
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.tl-item {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 10px;
  padding: 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface-alt);
  transition: all 0.2s ease;
}

.tl-item.star-item {
  border-color: #f59e0b;
  background: linear-gradient(to right, rgba(245, 158, 11, 0.08), var(--surface-alt));
}

.tl-item.is-done {
  opacity: 0.62;
}

.tl-item.is-done .tl-title {
  text-decoration: line-through;
}

.tl-item.is-cut {
  border-color: var(--danger);
  background: var(--danger-bg);
}

.tl-item.is-trimmed {
  border-color: var(--warn);
  background: var(--warn-bg);
}

.tl-check-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 2px;
}

.tl-check {
  width: 20px;
  height: 20px;
  accent-color: var(--accent);
  cursor: pointer;
}

.tl-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 6px;
}

.tl-time-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.tl-time {
  font-weight: 800;
  font-size: 0.85rem;
  padding: 2px 8px;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent-strong);
}

[data-theme="dark"] .tl-time {
  color: var(--accent);
}

.tl-dur {
  font-size: 0.78rem;
  color: var(--text-light);
  font-weight: 600;
}

.tl-title {
  font-size: 1rem;
  font-weight: 700;
  margin: 4px 0 2px;
}

.tl-item.is-cut .tl-title {
  text-decoration: line-through;
  color: var(--danger);
}

.tl-note {
  font-size: 0.86rem;
  color: var(--text-muted);
}

.tl-impact-banner {
  margin-top: 6px;
  padding: 5px 9px;
  border-radius: 7px;
  font-size: 0.82rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.72);
  color: var(--text);
}

[data-theme="dark"] .tl-impact-banner {
  background: rgba(0, 0, 0, 0.28);
}

.tl-actions {
  display: flex;
  gap: 4px;
}

.icon-btn {
  border: none;
  background: transparent;
  padding: 3px 6px;
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--text-light);
}

.icon-btn:hover {
  background: var(--border);
  color: var(--text);
}

/* ---------------- Tables & Lists ---------------- */
.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

th, td {
  text-align: left;
  padding: 9px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

th {
  font-size: 0.8rem;
  color: var(--text-light);
  font-weight: 700;
  background: var(--surface-alt);
}

tr.row-critical td {
  background: var(--danger-bg);
}

.expense-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 14px;
}

.stat-box {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
}

.stat-label {
  font-size: 0.76rem;
  color: var(--text-light);
  font-weight: 600;
}

.stat-value {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--accent);
  margin-top: 2px;
}

.stat-sub {
  font-size: 0.76rem;
  color: var(--text-muted);
}

/* ---------------- Food & Memo Cards ---------------- */
.food-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
}

.food-item {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.food-item-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 6px;
}

.memo-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.memo-list li {
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 0.88rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.phone-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.phone-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  background: var(--ok-bg);
  color: var(--ok);
  padding: 6px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.84rem;
}

/* ---------------- Toolkit Views ---------------- */
.toolkit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 16px;
}

.check-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.check-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 9px 11px;
  border-radius: 10px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
}

.check-row.done {
  opacity: 0.6;
}

.check-row.done .check-title {
  text-decoration: line-through;
}

.check-row input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  accent-color: var(--accent);
}

.converter-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.input-group label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
}

.input, select, textarea {
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

.input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

/* ---------------- Modal ---------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.58);
  backdrop-filter: blur(3px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 100;
}

.modal-backdrop.open {
  display: flex;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 100%;
  max-width: 700px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  padding: 20px;
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.modal-head h3 {
  margin: 0;
  font-size: 1.15rem;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-full {
  grid-column: 1 / -1;
}

.modal-foot {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.preview-box {
  background: var(--surface-alt);
  border: 1px dashed var(--accent);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 0.84rem;
  margin-top: 10px;
}

/* ---------------- Mobile Bottom Bar & Toast ---------------- */
.mobile-bottom-nav {
  display: none;
}

.toast {
  position: fixed;
  bottom: 76px;
  right: 18px;
  background: #0f172a;
  color: #fff;
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 0.86rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: all 0.25s ease;
  z-index: 200;
}

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

/* ---------------- Responsive ---------------- */
@media (max-width: 900px) {
  .two-col {
    grid-template-columns: 1fr;
  }
  .weather-bar {
    grid-template-columns: 1fr;
  }
  .expense-summary-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero-title-wrap h1 {
    font-size: 1.2rem;
  }
  .delay-buttons {
    grid-template-columns: repeat(2, 1fr);
  }
  .converter-grid, .form-grid {
    grid-template-columns: 1fr;
  }
  .view-nav .tab-group {
    display: none;
  }
  .mobile-bottom-nav {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface);
    border-top: 1px solid var(--border);
    z-index: 50;
    padding: 4px 4px env(safe-area-inset-bottom, 6px);
  }
  .mobile-nav-btn {
    border: none;
    background: transparent;
    padding: 6px 4px;
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
  }
  .mobile-nav-btn.active {
    color: var(--accent);
  }
}

/* ---------------- Print Styles ---------------- */
@media print {
  .hero-actions, .hero-controls, .day-strip-wrap, .view-nav,
  .mobile-bottom-nav, .delay-buttons, .tl-actions, .btn, .icon-btn {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  .card {
    box-shadow: none;
    border: 1px solid #ccc;
    break-inside: avoid;
  }
}