/* ============================================================
   styles.css — Tử Vi Đẩu Số web app
   Dark premium spiritual + Light warm editorial
   ============================================================ */

/* ── Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Noto+Serif:ital,wght@0,400;0,600;1,400&display=swap');

/* ── CSS Variables ── */
:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Noto Serif', Georgia, serif;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 500ms ease;
  --transition-breath: 2s ease-in-out;
}

/* ── Dark Theme (default) ── */
[data-theme="dark"] {
  --bg-primary: #0f1117;
  --bg-secondary: #161820;
  --bg-surface: #1c1e28;
  --bg-elevated: #22253080;
  --bg-glass: rgba(28, 30, 40, 0.85);

  --text-primary: #ede8df;
  --text-secondary: #a09b90;
  --text-muted: #6b665d;
  --text-inverse: #0f1117;

  --accent-gold: #c9a96e;
  --accent-gold-muted: rgba(201, 169, 110, 0.15);
  --accent-gold-soft: rgba(201, 169, 110, 0.08);
  --accent-teal: #5a9e8f;
  --accent-teal-muted: rgba(90, 158, 143, 0.15);
  --accent-red: #b85c5c;
  --accent-red-muted: rgba(184, 92, 92, 0.15);

  --border-subtle: rgba(201, 169, 110, 0.08);
  --border-light: rgba(201, 169, 110, 0.15);
  --border-active: rgba(201, 169, 110, 0.4);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 20px rgba(201, 169, 110, 0.1);

  --chart-bg: #181a24;
  --chart-cell-bg: rgba(28, 30, 40, 0.6);
  --chart-cell-border: rgba(201, 169, 110, 0.1);
  --chart-cell-hover: rgba(201, 169, 110, 0.08);
  --chart-cell-selected: rgba(201, 169, 110, 0.15);
  --chart-center-bg: rgba(15, 17, 23, 0.8);

  --star-chinh: #c9a96e;
  --star-phu: #8a8577;
  --star-sat: #b85c5c;
  --star-loc: #5a9e8f;
  --star-khoa: #7a8ec7;

  --year-marker: rgba(90, 158, 143, 0.12);
  --year-marker-border: rgba(90, 158, 143, 0.3);
}

/* ── Light Theme ── */
[data-theme="light"] {
  --bg-primary: #f5f0e8;
  --bg-secondary: #ede8df;
  --bg-surface: #ffffff;
  --bg-elevated: rgba(255,255,255,0.9);
  --bg-glass: rgba(255, 255, 255, 0.88);

  --text-primary: #2c2820;
  --text-secondary: #6b665d;
  --text-muted: #a09b90;
  --text-inverse: #f5f0e8;

  --accent-gold: #96763a;
  --accent-gold-muted: rgba(150, 118, 58, 0.1);
  --accent-gold-soft: rgba(150, 118, 58, 0.05);
  --accent-teal: #3d7a6c;
  --accent-teal-muted: rgba(61, 122, 108, 0.1);
  --accent-red: #a04545;
  --accent-red-muted: rgba(160, 69, 69, 0.1);

  --border-subtle: rgba(44, 40, 32, 0.06);
  --border-light: rgba(44, 40, 32, 0.1);
  --border-active: rgba(150, 118, 58, 0.4);

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.1);
  --shadow-glow: 0 0 20px rgba(150, 118, 58, 0.08);

  --chart-bg: #faf7f2;
  --chart-cell-bg: rgba(255, 255, 255, 0.7);
  --chart-cell-border: rgba(150, 118, 58, 0.12);
  --chart-cell-hover: rgba(150, 118, 58, 0.06);
  --chart-cell-selected: rgba(150, 118, 58, 0.12);
  --chart-center-bg: rgba(245, 240, 232, 0.9);

  --star-chinh: #96763a;
  --star-phu: #6b665d;
  --star-sat: #a04545;
  --star-loc: #3d7a6c;
  --star-khoa: #5568a0;

  --year-marker: rgba(61, 122, 108, 0.08);
  --year-marker-border: rgba(61, 122, 108, 0.25);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition-slow), color var(--transition-slow);
}

/* Ancient celestial-chart atmosphere: paper grain + restrained polar compass.
   No galaxy glow; intent is Chinese astronomical manuscript, not game UI. */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.65' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  width: min(86vw, 920px);
  aspect-ratio: 1;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border: 1px solid var(--border-light);
  border-radius: 50%;
  opacity: 0.26;
  background:
    linear-gradient(90deg, transparent calc(50% - .5px), var(--border-light) 50%, transparent calc(50% + .5px)),
    linear-gradient(0deg, transparent calc(50% - .5px), var(--border-light) 50%, transparent calc(50% + .5px)),
    repeating-radial-gradient(circle at center, transparent 0 12.2%, var(--border-light) 12.35% 12.5%, transparent 12.65% 25%),
    radial-gradient(circle at center, var(--accent-gold) 0 2px, transparent 2.5px);
  pointer-events: none;
  z-index: 0;
}

[data-theme="light"] body::after { opacity: 0.18; }
.app-container, .page-input, .page-chart { position: relative; z-index: 1; }

/* ── Loading screen (moved to Input Form Page section) ── */
.loader-content { text-align: center; }
.loader-symbol {
  font-size: 2rem;
  color: var(--accent-gold);
  animation: pulse-breath 2s ease-in-out infinite;
}
.loader-text {
  margin-top: var(--space-md);
  color: var(--text-muted);
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

@keyframes pulse-breath {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

/* ── App Layout ── */
.app-container {
  position: relative;
  z-index: 1;
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-md);
}

/* ── Header ── */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--space-lg);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-gold-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold);
  font-size: 1rem;
  border: 1px solid var(--border-light);
}

.brand-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.mode-indicator {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.mode-indicator.mode-focus { color: var(--accent-gold); }
.mode-indicator.mode-topic { color: var(--accent-teal); }
.mode-indicator.mode-story { color: var(--accent-gold); }

.btn-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition-fast);
}
.btn-icon:hover {
  background: var(--accent-gold-muted);
  color: var(--accent-gold);
  border-color: var(--border-light);
}

.btn-story {
  padding: var(--space-xs) var(--space-md);
  width: auto;
  font-size: 0.8rem;
  font-family: var(--font-sans);
  gap: var(--space-xs);
}

.btn-export.exported {
  color: var(--accent-teal);
  border-color: var(--accent-teal);
}

/* ── Hero Card ── */
.hero-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  margin-bottom: var(--space-lg);
  box-shadow: var(--shadow-sm);
}

.hero-name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.hero-meta {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: var(--space-md);
}

.hero-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-style: italic;
  margin-bottom: var(--space-lg);
  padding-left: var(--space-md);
  border-left: 2px solid var(--accent-gold-muted);
}

.hero-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.summary-item {
  text-align: center;
  padding: var(--space-md);
  background: var(--bg-elevated);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.summary-label {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
}

.summary-value {
  display: block;
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-gold);
}

.hero-insight {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ── Topic Bar ── */
.topic-bar {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.topic-bar::-webkit-scrollbar { display: none; }

.topic-btn {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.825rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}
.topic-btn:hover {
  background: var(--accent-gold-soft);
  color: var(--text-primary);
  border-color: var(--border-light);
}
.topic-btn.active {
  background: var(--accent-gold-muted);
  color: var(--accent-gold);
  border-color: var(--accent-gold);
}

.topic-icon { font-size: 0.9rem; }

/* ── Year Bar ── */
.year-bar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.year-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-right: var(--space-sm);
}

.year-btn {
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.825rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.year-btn:hover {
  background: var(--accent-teal-muted);
  color: var(--text-primary);
}
.year-btn.active {
  background: var(--accent-teal-muted);
  color: var(--accent-teal);
  border-color: var(--accent-teal);
}

.year-note {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-style: italic;
  margin-left: auto;
}

/* ── Main Layout ── */
.main-content {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: var(--space-lg);
  align-items: start;
}

/* ── Chart Container ── */
.chart-wrapper {
  position: relative;
  background: var(--chart-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.tuvi-chart {
  width: 100%;
  height: auto;
  display: block;
}

/* Chart center */
.center-bg {
  fill: var(--chart-center-bg);
  stroke: var(--border-light);
  stroke-width: 1;
}
.center-title {
  fill: var(--accent-gold);
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0.15em;
}
.center-subtitle {
  fill: var(--text-muted);
  font-family: var(--font-serif);
  font-size: 16px;
  letter-spacing: 0.2em;
}
.center-line {
  stroke: var(--accent-gold);
  stroke-width: 0.5;
  opacity: 0.3;
}

/* Palace cells */
.palace-bg {
  fill: var(--chart-cell-bg);
  stroke: var(--chart-cell-border);
  stroke-width: 1;
  transition: all var(--transition-base);
}

.palace-cell {
  cursor: pointer;
  outline: none;
}
.palace-cell:hover .palace-bg,
.palace-cell:focus-visible .palace-bg {
  fill: var(--chart-cell-hover);
  stroke: var(--border-light);
}
.palace-cell:focus-visible {
  outline: 2px solid var(--accent-gold);
  outline-offset: -2px;
  border-radius: 4px;
}

.palace-cell.selected .palace-bg {
  fill: var(--chart-cell-selected);
  stroke: var(--accent-gold);
  stroke-width: 1.5;
  filter: drop-shadow(0 0 8px rgba(201, 169, 110, 0.15));
}

.palace-cell.tam-hop .palace-bg {
  fill: var(--accent-gold-soft);
  stroke: var(--accent-gold);
  stroke-width: 0.8;
  stroke-dasharray: 4 2;
  opacity: 0.85;
}

.palace-cell.xung-chieu .palace-bg {
  fill: var(--accent-red-muted);
  stroke: var(--accent-red);
  stroke-width: 0.8;
  stroke-dasharray: 4 2;
  opacity: 0.85;
}

.palace-cell.topic-highlight .palace-bg {
  fill: var(--accent-teal-muted);
  stroke: var(--accent-teal);
  stroke-width: 1;
}

.palace-cell.dimmed {
  opacity: 0.35;
  transition: opacity var(--transition-base);
}

.palace-name {
  fill: var(--text-primary);
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 600;
}

.chi-label {
  fill: var(--text-muted);
  font-size: 10px;
  opacity: 0.6;
}

.star-name {
  font-size: 11px;
  font-family: var(--font-sans);
}
.star-brightness {
  font-size: 9px;
  opacity: 0.6;
}
.star-more {
  font-size: 10px;
  fill: var(--text-muted);
}

/* Star type colors in chart */
.star-chinh .star-name { fill: var(--star-chinh); }
.star-phu .star-name { fill: var(--star-phu); }
.star-sat .star-name { fill: var(--star-sat); }
.star-loc .star-name { fill: var(--star-loc); }
.star-khoa .star-name { fill: var(--star-khoa); }

.star-chinh .star-brightness { fill: var(--star-chinh); }
.star-phu .star-brightness { fill: var(--star-phu); }
.star-sat .star-brightness { fill: var(--star-sat); }
.star-loc .star-brightness { fill: var(--star-loc); }
.star-khoa .star-brightness { fill: var(--star-khoa); }

/* Relationship lines */
.rel-line {
  stroke-width: 1.5;
  fill: none;
  opacity: 0.6;
}
.rel-tam-hop { stroke: var(--accent-gold); stroke-dasharray: 6 3; }
.rel-xung-chieu { stroke: var(--accent-red); stroke-dasharray: 3 3; }

.animate-line {
  stroke-dashoffset: 100;
  animation: dash-flow 1s ease forwards;
}
@keyframes dash-flow {
  to { stroke-dashoffset: 0; }
}

/* Year transit markers */
.year-marker {
  fill: var(--year-marker);
  stroke: var(--year-marker-border);
  stroke-width: 1;
  pointer-events: none;
  animation: year-pulse 3s ease-in-out infinite;
}
@keyframes year-pulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* ── Detail Panel ── */
.detail-panel-wrapper {
  position: sticky;
  top: var(--space-md);
}

.detail-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  min-height: 400px;
  transition: all var(--transition-base);
}

/* Panel empty state */
.panel-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  min-height: 350px;
}
.panel-empty-icon {
  font-size: 2.5rem;
  color: var(--text-muted);
  opacity: 0.3;
  margin-bottom: var(--space-md);
}
.panel-empty-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}
.panel-empty-hint {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: var(--space-md);
  max-width: 240px;
}

/* Panel header */
.panel-header {
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border-subtle);
}
.panel-palace-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent-gold);
  margin-bottom: var(--space-xs);
}
.panel-palace-meaning {
  font-size: 0.825rem;
  color: var(--text-muted);
}

/* Panel tabs */
.panel-tabs {
  display: flex;
  gap: 2px;
  margin-bottom: var(--space-lg);
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
  padding: 2px;
}
.panel-tab {
  flex: 1;
  padding: var(--space-sm);
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  cursor: pointer;
  border-radius: calc(var(--radius-sm) - 1px);
  transition: all var(--transition-fast);
}
.panel-tab:hover { color: var(--text-primary); }
.panel-tab.active {
  background: var(--bg-surface);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* Panel content */
.panel-section {
  margin-bottom: var(--space-lg);
}
.panel-section:last-child { margin-bottom: 0; }

.panel-section-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.panel-text {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-primary);
}
.panel-text-small {
  font-size: 0.825rem;
  line-height: 1.6;
  color: var(--text-secondary);
}
.panel-advice {
  padding: var(--space-md);
  background: var(--accent-gold-soft);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-gold);
}

.topic-palace-list { display: grid; gap: var(--space-sm); }
.topic-palace-card {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  color: var(--text-secondary);
  text-align: left;
  font: inherit;
  font-size: .8rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.topic-palace-card:hover { border-color: var(--accent-gold); color: var(--text-primary); }
.topic-palace-card strong { color: var(--accent-gold); font-size: .875rem; white-space: nowrap; }
.topic-palace-card span { text-align: right; }

/* Star chips */
.star-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}
.star-chip {
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 0.775rem;
  border: 1px solid var(--border-subtle);
  background: var(--bg-elevated);
}
.star-chip.star-chinh { color: var(--star-chinh); border-color: var(--star-chinh); background: var(--accent-gold-soft); }
.star-chip.star-phu { color: var(--star-phu); }
.star-chip.star-sat { color: var(--star-sat); border-color: var(--star-sat); background: var(--accent-red-muted); }
.star-chip.star-loc { color: var(--star-loc); border-color: var(--star-loc); background: var(--accent-teal-muted); }
.star-chip.star-khoa { color: var(--star-khoa); }
.star-chip small { opacity: 0.6; margin-left: 2px; }

/* Star list */
.star-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border-subtle);
}
.star-row:last-child { border-bottom: none; }
.star-row-name {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.875rem;
}
.star-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}
.star-dot.star-chinh { background: var(--star-chinh); }
.star-dot.star-phu { background: var(--star-phu); }
.star-dot.star-sat { background: var(--star-sat); }
.star-dot.star-loc { background: var(--star-loc); }
.star-dot.star-khoa { background: var(--star-khoa); }

.star-row-meta {
  display: flex;
  gap: var(--space-sm);
  font-size: 0.75rem;
  color: var(--text-muted);
}
.star-type-label { opacity: 0.7; }
.star-bright-label { color: var(--accent-gold); }

.star-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: 0.725rem;
  color: var(--text-muted);
}
.star-legend-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Topic & Year badges in panel */
.panel-topic-badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background: var(--accent-teal-muted);
  color: var(--accent-teal);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  letter-spacing: 0.05em;
}

.interpret-topic {
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border-subtle);
}
.interpret-topic:last-child { border-bottom: none; }
.interpret-topic-label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--accent-teal);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-xs);
}

.panel-year-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.panel-year-badge {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent-teal);
}
.panel-year-lunar {
  color: var(--text-muted);
  font-size: 0.875rem;
}
.panel-luu-nien-badge {
  display: inline-block;
  margin-top: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  background: var(--accent-teal-muted);
  color: var(--accent-teal);
  border-radius: var(--radius-sm);
  font-size: 0.775rem;
  font-weight: 500;
}

/* Palace links in text */
.palace-link {
  color: var(--accent-gold);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 3px;
  cursor: pointer;
  transition: color var(--transition-fast);
}
.palace-link:hover,
.palace-link:focus {
  color: var(--accent-teal);
  text-decoration-style: solid;
}

/* ── Story Mode ── */
#story-overlay {
  display: none;
  position: fixed;
  inset: 0;
  /* Dim, don't blur: underlying chart remains legible and orientation stays intact. */
  background: color-mix(in srgb, var(--bg-primary) 82%, transparent);
  z-index: 100;
}
#story-overlay.active { display: block; }

#story-container {
  position: fixed;
  bottom: max(var(--space-lg), env(safe-area-inset-bottom));
  left: 50%;
  transform: translateX(-50%);
  z-index: 101;
  width: min(600px, calc(100vw - var(--space-xl) * 2));
  max-height: calc(100dvh - var(--space-xl) * 2);
  pointer-events: none;
}

.story-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  max-height: calc(100dvh - var(--space-xl) * 2);
  overflow-y: auto;
  box-shadow: 0 18px 60px rgba(0,0,0,.45);
  pointer-events: auto;
  outline: none;
}

.story-card.animate-in {
  animation: story-slide-up 0.4s ease;
}
@keyframes story-slide-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.story-dismiss {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  width: 30px;
  height: 30px;
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  border-radius: 50%;
}
.story-dismiss:hover, .story-dismiss:focus-visible { color: var(--accent-gold); background: var(--accent-gold-soft); }

.story-progress {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}
.story-progress-bar {
  flex: 1;
  height: 2px;
  background: var(--accent-gold);
  border-radius: 1px;
  transition: width var(--transition-base);
}
.story-progress-text {
  font-size: 0.7rem;
  color: var(--text-muted);
}

.story-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  color: var(--accent-gold);
}

.story-content {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.story-nav {
  display: flex;
  justify-content: space-between;
}
.story-btn {
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.825rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.story-btn:hover {
  background: var(--accent-gold-muted);
  color: var(--accent-gold);
  border-color: var(--accent-gold);
}
.story-btn-close {
  background: var(--accent-gold-muted);
  color: var(--accent-gold);
  border-color: var(--accent-gold);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .main-content {
    grid-template-columns: 1fr;
  }

  .detail-panel-wrapper {
    position: static;
  }

  .hero-summary {
    grid-template-columns: repeat(2, 1fr);
  }

  .year-note { display: none; }
}

@media (max-width: 600px) {
  .app-container { padding: var(--space-sm); }

  .hero-card { padding: var(--space-md); }
  .hero-summary { grid-template-columns: 1fr 1fr; gap: var(--space-sm); }

  .brand-name { font-size: 0.95rem; }

  .panel-tabs { gap: 0; }
  .panel-tab { font-size: 0.7rem; padding: var(--space-xs); }

  .detail-panel { padding: var(--space-md); }

  #story-container {
    bottom: var(--space-sm);
    width: calc(100vw - var(--space-md) * 2);
  }
  #story-container {
    bottom: max(var(--space-sm), env(safe-area-inset-bottom));
    max-height: calc(100dvh - var(--space-md));
  }
  .story-card {
    padding: var(--space-lg) var(--space-md) var(--space-md);
    max-height: calc(100dvh - var(--space-md));
    border-radius: var(--radius-lg) var(--radius-lg) var(--radius-md) var(--radius-md);
  }
  .story-title { font-size: 1rem; }
  .story-content { font-size: .85rem; line-height: 1.65; }

  .btn-story .btn-story-label { display: none; }
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .year-marker { animation: none; opacity: 0.7; }
  .loader-symbol { animation: none; opacity: 0.7; }
}

/* ── Input Form Page ── */
.page-input {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.input-container {
  width: min(480px, calc(100vw - var(--space-xl) * 2));
  padding: var(--space-2xl);
}

.input-brand {
  text-align: center;
  margin-bottom: var(--space-2xl);
}
.input-brand .brand-logo {
  width: 48px;
  height: 48px;
  font-size: 1.4rem;
  margin: 0 auto var(--space-md);
}
.input-title {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.04em;
}
.input-subtitle {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* Form */
.tuvi-form {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--space-md);
}
.form-label {
  display: block;
  font-size: 0.775rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.03em;
}
.form-input {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}
.form-input::placeholder { color: var(--text-muted); }
.form-input:focus {
  border-color: var(--accent-gold);
  box-shadow: 0 0 0 3px var(--accent-gold-soft);
}
.form-select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 5l3 3 3-3' fill='none' stroke='%23a09b90' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}
.form-row-3 {
  grid-template-columns: 1fr 1fr 1fr;
}

.form-note {
  margin-bottom: var(--space-lg);
  padding: var(--space-sm) var(--space-md);
  background: var(--accent-gold-soft);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-gold-muted);
}
.form-note p {
  font-size: 0.775rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.form-submit {
  width: 100%;
  padding: var(--space-md);
  border: 1px solid var(--accent-gold);
  border-radius: var(--radius-md);
  background: var(--accent-gold-muted);
  color: var(--accent-gold);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  transition: all var(--transition-fast);
  letter-spacing: 0.03em;
}
.form-submit:hover {
  background: var(--accent-gold);
  color: var(--text-inverse);
}

.input-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}
.input-disclaimer {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* App loader overlay */
.app-loader {
  position: fixed;
  inset: 0;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity var(--transition-slow);
}
.app-loader.fade-out { opacity: 0; pointer-events: none; }

/* ── Print ── */
@media print {
  body::before { display: none; }
  .app-header, .topic-bar, .year-bar, #story-overlay, #story-container, .btn-icon { display: none; }
  .main-content { grid-template-columns: 1fr; }
  .detail-panel { break-inside: avoid; }
}