/* White/gray base. Color is limited to selection, prediction and explicit status highlights. */
:root {
  --theme: dark;
  --bg: #181818;
  --bg-gradient: none;
  --surface: #222222;
  --surface-2: #2b2b2b;
  --surface-hover: #343434;
  --border: #444444;
  --border-subtle: #333333;
  --text: #f2f2f2;
  --text-muted: #c2c2c2;
  --text-subtle: #a6a6a6;
  --primary: #aac9ed;
  --primary-text: #c2d9f3;
  --primary-button-bg: #3b6fa5;
  --button-primary-hover: #2d5988;
  --button-primary-ink: #ffffff;
  --primary-subtle: #263445;
  --primary-border: #5c7d9e;
  --door-tai-color: #c2d9f3;
  --door-tai-bg: #3b6fa5;
  --door-tai-border: #7c9fc7;
  --door-tai-tint: #263445;
  --door-tai-ink: #ffffff;
  --door-xiu-color: #e9cd99;
  --door-xiu-bg: #dfbf84;
  --door-xiu-border: #bb995c;
  --door-xiu-tint: #3c3325;
  --door-xiu-ink: #332714;
  --success: #ace1c4;
  --success-bg: #243b2f;
  --success-border: #527a62;
  --success-ink: #ace1c4;
  --danger: #f0acb6;
  --danger-bg: #412b32;
  --danger-border: #855a65;
  --danger-hover: #51353f;
  --danger-ink: #f0acb6;
  --warning: #e9cd99;
  --warning-bg: #3c3325;
  --warning-border: #847045;
  --warning-ink: #e9cd99;
  --radius: 8px;
  --radius-sm: 6px;
  --radius-lg: 12px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

html[data-theme="light"] {
  --theme: light;
  --bg: #fafafa;
  --bg-gradient: none;
  --surface: #ffffff;
  --surface-2: #f5f5f5;
  --surface-hover: #ebebeb;
  --border: #dedede;
  --border-subtle: #ededed;
  --text: #252525;
  --text-muted: #626262;
  --text-subtle: #707070;
  --primary: #3b6fa5;
  --primary-text: #2d5988;
  --primary-button-bg: #3b6fa5;
  --button-primary-hover: #2d5988;
  --button-primary-ink: #ffffff;
  --primary-subtle: #eef5fc;
  --primary-border: #a3bdd8;
  --door-tai-color: #2d5988;
  --door-tai-bg: #3b6fa5;
  --door-tai-border: #7c9fc7;
  --door-tai-tint: #eef5fc;
  --door-tai-ink: #ffffff;
  --door-xiu-color: #835b24;
  --door-xiu-bg: #f0cf95;
  --door-xiu-border: #bf985e;
  --door-xiu-tint: #fff7e9;
  --door-xiu-ink: #4d3619;
  --success: #18734b;
  --success-bg: #eef9f1;
  --success-border: #b7ddc5;
  --success-ink: #18734b;
  --danger: #b53c4a;
  --danger-bg: #fff0f2;
  --danger-border: #efc0c6;
  --danger-hover: #fce8ed;
  --danger-ink: #b53c4a;
  --warning: #8a5d16;
  --warning-bg: #fff7e6;
  --warning-border: #e6cf99;
  --warning-ink: #8a5d16;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --theme: light;
    --bg: #fafafa;
    --bg-gradient: none;
    --surface: #ffffff;
    --surface-2: #f5f5f5;
    --surface-hover: #ebebeb;
    --border: #dedede;
    --border-subtle: #ededed;
    --text: #252525;
    --text-muted: #626262;
    --text-subtle: #707070;
    --primary: #3b6fa5;
    --primary-text: #2d5988;
    --primary-button-bg: #3b6fa5;
    --button-primary-hover: #2d5988;
    --button-primary-ink: #ffffff;
    --primary-subtle: #eef5fc;
    --primary-border: #a3bdd8;
    --door-tai-color: #2d5988;
    --door-tai-bg: #3b6fa5;
    --door-tai-border: #7c9fc7;
    --door-tai-tint: #eef5fc;
    --door-tai-ink: #ffffff;
    --door-xiu-color: #835b24;
    --door-xiu-bg: #f0cf95;
    --door-xiu-border: #bf985e;
    --door-xiu-tint: #fff7e9;
    --door-xiu-ink: #4d3619;
    --success: #18734b;
    --success-bg: #eef9f1;
    --success-border: #b7ddc5;
    --success-ink: #18734b;
    --danger: #b53c4a;
    --danger-bg: #fff0f2;
    --danger-border: #efc0c6;
    --danger-hover: #fce8ed;
    --danger-ink: #b53c4a;
    --warning: #8a5d16;
    --warning-bg: #fff7e6;
    --warning-border: #e6cf99;
    --warning-ink: #8a5d16;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  }
}

*, *::before, *::after { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg);
  background-image: var(--bg-gradient);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

h1 { font-size: 24px; font-weight: 700; letter-spacing: -0.02em; margin: 0; }
h2 { font-size: 16px; font-weight: 600; letter-spacing: -0.01em; margin: 0; }
h3 { font-size: 14px; font-weight: 600; margin: 0; }
p { margin: 0; }
small { font-size: 12px; }
a { color: var(--primary-text); text-decoration: none; }
a:hover { text-decoration: underline; }

.mono, .metric-value, .number {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  font-variant-numeric: tabular-nums;
}
.positive { color: var(--success); font-weight: 600; }
.negative { color: var(--danger); font-weight: 600; }
.muted { color: var(--text-muted); }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); border: 0; }

.skip {
  position: fixed;
  top: -100px;
  left: 16px;
  background: var(--primary-button-bg);
  color: #ffffff;
  padding: 10px 16px;
  z-index: 1000;
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.skip:focus { top: 16px; }

button, a, input, select, textarea { touch-action: manipulation; }
button { cursor: pointer; border: 1px solid var(--border); font: inherit; }
button:disabled { cursor: not-allowed; opacity: 0.65; border-color: var(--border-subtle); color: var(--text-muted); }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 2px solid var(--primary-text);
  outline-offset: 2px;
}

/* Header & Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--surface);
  border-bottom: 1px solid var(--border);
  transition: background-color 0.15s ease, border-color 0.15s ease;
}
.topbar-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.topbar-brand-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  min-width: 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.01em;
  flex-shrink: 0;
}
.brand:hover { text-decoration: none; }
.brand-logo {
  width: 36px;
  height: 36px;
  object-fit: contain;
  flex-shrink: 0;
  display: block;
  border-radius: 8px;
}
.brand-text {
  font-weight: 700;
  color: var(--text);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.nav-links a:hover {
  background-color: var(--surface-2);
  color: var(--text);
  text-decoration: none;
}
.nav-links a.active {
  background-color: var(--primary-subtle);
  color: var(--primary-text);
  font-weight: 600;
}
.topbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* Connection Status */
.connection {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--success);
  background-color: var(--success-bg);
  border: 1px solid var(--success-border);
  padding: 6px 12px;
  border-radius: 9999px;
  font-weight: 500;
  white-space: nowrap;
}
.connection.offline {
  color: var(--warning);
  background-color: var(--warning-bg);
  border-color: var(--warning-border);
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--success);
  display: inline-block;
}
.connection.offline .status-dot {
  background-color: var(--warning);
}

/* Theme Toggle Button */
.icon-button {
  width: 44px;
  height: 44px;
  min-width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}
.icon-button:hover {
  background-color: var(--surface-hover);
  border-color: var(--primary-border);
}
.theme-toggle svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 2;
}
.theme-toggle .icon-sun { display: none; }
.theme-toggle .icon-moon { display: block; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }

/* Main Layout */
.workspace {
  min-height: calc(100vh - 60px);
  display: flex;
  flex-direction: column;
  width: 100%;
}
main {
  flex: 1;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: 24px;
  outline: none;
}
.page-footer {
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: 20px 24px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  color: var(--text-muted);
}

/* Headings */
.page-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.page-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Buttons */
.button {
  min-height: 44px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  transition: background-color 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.button:hover {
  background-color: var(--surface-hover);
  border-color: var(--primary-border);
  text-decoration: none;
}
.button.primary {
  background-color: var(--primary-button-bg);
  border-color: var(--primary-button-bg);
  color: var(--button-primary-ink);
}
.button.primary:hover {
  background-color: var(--button-primary-hover);
  border-color: var(--button-primary-hover);
}
.button.danger {
  background-color: var(--danger-bg);
  border-color: var(--danger-border);
  color: var(--danger-ink);
}
.button.danger:hover {
  background-color: var(--danger-hover);
}
.button.subtle {
  background-color: transparent;
  border-color: transparent;
  color: var(--text-muted);
}
.button.subtle:hover {
  background-color: var(--surface-2);
  color: var(--text);
  border-color: var(--border);
}
.button.small {
  min-height: 44px;
  padding: 6px 14px;
  font-size: 12px;
}
.copy-link svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.session-metrics-slot { min-width: 0; }
.session-metrics-slot:empty { display: none; }

/* Door Specific Buttons (Đặt TÀI / Đặt XỈU) */
.button.button-tai {
  background-color: var(--door-tai-tint);
  border-color: var(--door-tai-border);
  color: var(--door-tai-color);
  font-weight: 700;
}
.button.button-tai:hover {
  background-color: var(--door-tai-bg);
  color: var(--door-tai-ink);
}
.button.button-xiu {
  background-color: var(--door-xiu-tint);
  border-color: var(--door-xiu-border);
  color: var(--door-xiu-color);
  font-weight: 700;
}
.button.button-xiu:hover {
  background-color: var(--door-xiu-bg);
  color: var(--door-xiu-ink);
}

.toolbar, .button-row {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

/* Pills & Badges */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  min-height: 24px;
  padding: 2px 8px;
  border-radius: 9999px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text-muted);
  white-space: nowrap;
}
.pill.good {
  background-color: var(--success-bg);
  border-color: var(--success-border);
  color: var(--success-ink);
}
.pill.bad {
  background-color: var(--danger-bg);
  border-color: var(--danger-border);
  color: var(--danger-ink);
}
.pill.warn {
  background-color: var(--warning-bg);
  border-color: var(--warning-border);
  color: var(--warning-ink);
}
.pill.muted {
  background-color: var(--surface-2);
  color: var(--text-muted);
}

/* Hero Prediction Card (Dự đoán phiên này) */
.current-prediction-card {
  margin-bottom: 20px;
  border-width: 2px;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.current-prediction-card.prediction-door-tai {
  background-color: var(--door-tai-tint);
  border-color: var(--door-tai-border);
}
.current-prediction-card.prediction-door-xiu {
  background-color: var(--door-xiu-tint);
  border-color: var(--door-xiu-border);
}
.prediction-hero-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.prediction-door-block {
  display: flex;
  align-items: center;
  gap: 16px;
}
.prediction-door-name {
  font-size: 42px;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
}
.prediction-door-tai .prediction-door-name {
  color: var(--door-tai-color);
}
.prediction-door-xiu .prediction-door-name {
  color: var(--door-xiu-color);
}
.prediction-action-badge {
  font-size: 13px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 9999px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
}
.prediction-meta-block {
  text-align: right;
}
.prediction-sid {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
}
.prediction-score-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}
.prediction-hint {
  font-size: 12px;
  margin-top: 14px;
  line-height: 1.5;
  border-top: 1px solid var(--border-subtle);
  padding-top: 10px;
}

/* Stat Highlights */
.stat-pair-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 16px;
}
.stat-box {
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.stat-box-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  display: block;
}
.stat-box .metric-value {
  font-size: 28px;
  margin: 6px 0 2px;
}
.stat-box-sub {
  font-size: 11px;
  color: var(--text-muted);
}
.section-subtitle {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin: 14px 0 6px;
}

/* Metrics */
.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 20px;
}
.metric {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: border-color 0.15s ease;
}
.metric.accent {
  border-color: var(--primary-border);
  background-color: var(--primary-subtle);
}
.metric-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  gap: 8px;
}
.metric-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin: 8px 0 4px;
  line-height: 1.2;
  overflow-wrap: anywhere;
}
.metric-sub {
  font-size: 11px;
  color: var(--text-muted);
  line-height: 1.4;
}
.metric-value.positive { color: var(--success); }
.metric-value.negative { color: var(--danger); }

/* Grid & Cards */
.grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(320px, 1fr);
  gap: 18px;
  margin-bottom: 18px;
}
.grid.equal {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.card {
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.card-head {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.card-head h2 {
  font-size: 15px;
  font-weight: 600;
}
.card-head p {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 2px;
}
.card-body {
  padding: 18px;
}
.stack {
  display: grid;
  gap: 18px;
}

/* Road & Beads */
.segmented {
  display: inline-flex;
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2px;
  gap: 2px;
}
.segmented button {
  border: 0;
  background: transparent;
  color: var(--text-muted);
  border-radius: calc(var(--radius-sm) - 2px);
  min-width: 44px;
  min-height: 38px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 600;
  transition: background-color 0.15s ease, color 0.15s ease;
}
.segmented button.active {
  background-color: var(--primary-button-bg);
  color: #ffffff;
  font-weight: 700;
}
.road-scroll {
  overflow-x: auto;
  max-width: 100%;
  padding: 4px 0 12px;
  -webkit-overflow-scrolling: touch;
}
.road {
  display: grid;
  grid-template-rows: repeat(6, 34px);
  grid-auto-flow: column;
  grid-auto-columns: 34px;
  gap: 6px;
  width: max-content;
  min-height: 234px;
}
.bead {
  width: 34px;
  height: 34px;
  min-width: 34px;
  min-height: 34px;
  border-radius: 50%;
  border: 1px solid var(--door-tai-border);
  background-color: var(--door-tai-bg);
  color: var(--door-tai-ink);
  font-size: 13px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  position: relative;
  transition: transform 0.1s ease, filter 0.1s ease;
}
.bead.xiu {
  border-color: var(--door-xiu-border);
  background-color: var(--door-xiu-bg);
  color: var(--door-xiu-ink);
}
.bead.latest {
  outline: 2px solid var(--text);
  outline-offset: 2px;
  transform: scale(1.06);
}
.bead.inspected {
  outline: 2px solid var(--success);
  outline-offset: 2px;
}
.bead .bead-indicator {
  position: absolute;
  top: -6px;
  right: -4px;
  font-size: 9px;
  line-height: 1;
  color: var(--text);
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 12px;
  height: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.bead:hover {
  filter: brightness(1.2);
}
.road-legend {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  margin-right: 6px;
}
.legend-dot.tai { background-color: var(--door-tai-bg); }
.legend-dot.xiu { background-color: var(--door-xiu-bg); }
.road-result {
  margin-top: 12px;
  padding: 10px 14px;
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

/* Lines, Notes & Numbers */
.split-line {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 13px;
}
.split-line:last-child {
  border-bottom: 0;
}
.split-line b {
  font-weight: 600;
}
.note {
  font-size: 12px;
  line-height: 1.6;
  color: var(--text-muted);
  padding: 12px 14px;
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.note.warn {
  color: var(--warning-ink);
  background-color: var(--warning-bg);
  border-color: var(--warning-border);
}
.empty {
  padding: 32px 16px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
}
.empty strong {
  color: var(--text);
  display: block;
  margin-bottom: 4px;
  font-size: 14px;
}
.balance-figure {
  font-size: 32px;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
.progress {
  width: 100%;
  height: 8px;
  display: block;
  margin: 12px 0 16px;
  border-radius: 4px;
}
.spaced {
  margin-top: 16px;
}
.data-row {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}
.data-row > div {
  flex: 1;
  min-width: 120px;
}
.data-row small {
  display: block;
  color: var(--text-muted);
  font-size: 12px;
  margin-bottom: 4px;
}
.data-row b {
  font-size: 20px;
  font-weight: 700;
  font-family: ui-monospace, SFMono-Regular, monospace;
}

/* Forms & Fields */
form { display: grid; gap: 16px; }
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.field {
  display: grid;
  gap: 6px;
  min-width: 0;
}
.field label {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
}
.field input, .field select, .search-input, textarea {
  width: 100%;
  min-width: 0;
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  min-height: 44px;
  padding: 10px 14px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.15s ease;
}
.field input:focus, .field select:focus, textarea:focus {
  border-color: var(--primary-border);
}
.input-action {
  position: relative;
  display: flex;
}
.input-action input {
  padding-right: 64px;
}
.input-action button {
  position: absolute;
  right: 2px;
  top: 2px;
  bottom: 2px;
  min-width: 56px;
  background: transparent;
  color: var(--text-muted);
  border: 0;
  font-size: 12px;
  font-weight: 500;
  border-radius: var(--radius-sm);
}
.input-action button:hover {
  color: var(--text);
  background-color: var(--surface);
}
.form-error {
  color: var(--danger-ink);
  font-size: 12px;
  min-height: 18px;
  line-height: 1.4;
}
.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  align-items: center;
}

/* Tables */
.table-wrap {
  overflow-x: auto;
  max-width: 100%;
  -webkit-overflow-scrolling: touch;
}
table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
  white-space: nowrap;
}
th {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background-color: var(--surface-2);
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}
td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text);
}
tbody tr:hover {
  background-color: var(--surface-hover);
}
td strong {
  display: block;
  font-size: 13px;
  font-weight: 600;
}
td small {
  display: block;
  color: var(--text-muted);
  font-size: 11px;
  margin-top: 2px;
}
.table-filters {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.search-input {
  max-width: 320px;
  min-height: 44px;
}
.table-filters select, .row-action {
  background-color: var(--surface-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  min-height: 44px;
  font-size: 13px;
  font-family: inherit;
}
.row-actions {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.session-link {
  border: 0;
  background: transparent;
  padding: 0;
  color: var(--primary-text);
  font-size: 13px;
  font-weight: 600;
  min-height: 44px;
  text-align: left;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
}
.session-link:hover {
  text-decoration: underline;
}
.pagination {
  display: flex;
  justify-content: space-between;
  padding: 12px 16px;
  align-items: center;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
}

/* Event List */
.event-list { display: grid; gap: 0; }
.event {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 12px;
  font-size: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
  align-items: baseline;
}
.event:last-child { border-bottom: 0; }
.event time { color: var(--text-muted); font-size: 11px; }
.event .tag {
  font-size: 10px;
  font-weight: 600;
  color: var(--primary-text);
  margin-right: 6px;
  padding: 2px 6px;
  background-color: var(--primary-subtle);
  border-radius: 4px;
}
.event.warn .tag, .event.error .tag {
  color: var(--danger-ink);
  background-color: var(--danger-bg);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border);
  margin: 0 0 20px;
}
.tabs button {
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 12px 16px;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  min-height: 44px;
  transition: color 0.15s ease, border-bottom-color 0.15s ease;
}
.tabs button:hover {
  color: var(--text);
}
.tabs button.active {
  color: var(--primary-text);
  border-bottom-color: var(--primary-text);
  font-weight: 600;
}

/* Session Controls */
.control-mode {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-bottom: 16px;
}
.control-mode .button {
  flex: 1;
  min-height: 44px;
}
.control-mode .button.selected {
  background-color: var(--primary-subtle);
  border-color: var(--primary-text);
  color: var(--primary-text);
  font-weight: 700;
}
.control-mode .button.selected.live {
  background-color: var(--warning-bg);
  border-color: var(--warning-border);
  color: var(--warning-ink);
}
.control-stake {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background-color: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}
.control-stake strong {
  font-size: 18px;
  font-weight: 700;
}
.text-button {
  border: 0;
  background: transparent;
  color: var(--primary-text);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 8px;
  min-height: 44px;
  cursor: pointer;
}
.text-button:hover { text-decoration: underline; }

.prediction {
  padding: 14px 16px;
  border: 1px solid var(--border);
  background-color: var(--surface-2);
  border-radius: var(--radius-sm);
  margin: 12px 0;
}
.prediction-caption {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.prediction-side {
  font-size: 22px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}
.prediction-side.door-tai { color: var(--door-tai-color); }
.prediction-side.door-xiu { color: var(--door-xiu-color); }

.prediction-details {
  margin-top: 8px;
  font-size: 12px;
  color: var(--text-muted);
}
.prediction-details summary {
  cursor: pointer;
  min-height: 44px;
  display: flex;
  align-items: center;
  color: var(--primary-text);
  font-weight: 500;
}

.round-status {
  margin-bottom: 12px;
}
.round-status-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.auto-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 14px 0 8px;
}
.auto-actions .button {
  min-height: 48px;
  font-size: 14px;
}
.control-helper {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-top: 8px;
}
.manual-actions {
  margin-top: 16px;
  border-top: 1px solid var(--border);
  padding-top: 10px;
}
.manual-actions summary {
  cursor: pointer;
  min-height: 44px;
  display: flex;
  align-items: center;
  color: var(--text-muted);
  font-size: 13px;
}
.manual-actions .button-row {
  margin-top: 8px;
}
.manual-actions .button-row .button {
  flex: 1;
  min-height: 44px;
}

/* Session Gate / Login */
.session-gate {
  max-width: 440px;
  margin: 48px auto;
}
.gate-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}
.gate-topline h1 {
  font-size: 20px;
  overflow-wrap: anywhere;
}
.login-card h2 {
  font-size: 20px;
  margin-bottom: 20px;
}
.login-submit {
  width: 100%;
  min-height: 48px;
  font-size: 14px;
}
.login-footer, .login-returning, .gate-link-note {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.5;
}
.gate-progress {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--surface-2);
  font-size: 13px;
}
.loading-ring {
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--primary-button-bg);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Session Header */
.session-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.account-line {
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
  flex-wrap: wrap;
}
.account-menu {
  position: relative;
}
.account-menu summary {
  list-style: none;
  cursor: pointer;
}
.account-menu summary::-webkit-details-marker { display: none; }
.account-popover {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  width: 240px;
  display: grid;
  gap: 6px;
  background-color: var(--surface);
  border: 1px solid var(--border);
  padding: 8px;
  border-radius: var(--radius);
  z-index: 40;
  box-shadow: var(--shadow);
}
.account-popover .button {
  justify-content: flex-start;
  text-align: left;
  width: 100%;
}
.session-idle-status {
  font-size: 12px;
  color: var(--warning-ink);
}
.session-onboarding {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background-color: var(--surface-2);
  padding: 10px 16px;
  margin-bottom: 20px;
  font-size: 13px;
}

/* Balance history: exact observations, time-scaled axis, no curve smoothing. */
#equity-chart { min-width: 0; }
.balance-chart-head, .balance-chart-readout, .balance-chart-scrubber { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.balance-chart-head { font-size: 12px; }
.balance-chart-legend { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; }
.balance-chart-legend i { width: 18px; height: 3px; background: var(--primary); border-radius: 2px; }
.balance-chart-readout { min-height: 80px; padding: 14px 0 8px; align-items: flex-end; flex-wrap: wrap; }
.balance-chart-readout > div { display: grid; gap: 2px; }
.balance-chart-readout [data-chart-time] { font-size: 12px; }
.balance-chart-readout strong { font-size: 26px; line-height: 1.25; letter-spacing: -.04em; }
.balance-chart-change { font-size: 12px; padding-bottom: 3px; }
.balance-chart-plot { width: 100%; cursor: crosshair; touch-action: pan-y; }
.balance-chart-svg { width: 100%; height: auto; display: block; overflow: visible; }
.balance-chart-axis { fill: var(--text-muted); font: 11px -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; font-variant-numeric: tabular-nums; }
.balance-chart-grid { stroke: var(--border); stroke-dasharray: 3 5; stroke-width: 1; }
.balance-chart-area { fill: var(--primary); fill-opacity: .07; }
.balance-chart-line { fill: none; stroke: var(--primary); stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; }
.balance-chart-latest { fill: var(--primary); stroke: var(--surface); stroke-width: 2; }
.balance-chart-crosshair { stroke: var(--text-muted); stroke-width: 1; stroke-dasharray: 3 4; opacity: .7; }
.balance-chart-marker { fill: var(--surface); stroke: var(--primary); stroke-width: 2.5; }
.balance-chart-scrubber { margin-top: 2px; }
.balance-chart-scrubber label { display: flex; align-items: center; gap: 12px; flex: 1; min-width: 0; font-size: 12px; color: var(--text-muted); white-space: nowrap; }
.balance-chart-scrubber input[type="range"] { width: 100%; min-width: 0; min-height: 44px; margin: 0; padding: 0; border: none; box-shadow: none; background: transparent; accent-color: var(--primary-button-bg); cursor: pointer; }
.balance-chart-scrubber input:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }
.balance-chart-scrubber [data-chart-index] { min-width: 58px; text-align: right; font-size: 12px; }
.balance-chart-hint { font-size: 12px; margin-bottom: 14px; }
.balance-chart-extremes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.balance-chart-extremes > div { display: grid; gap: 3px; padding: 12px; border: 1px solid var(--border-subtle); background: var(--surface-2); border-radius: var(--radius-sm); min-width: 0; }
.balance-chart-extremes span, .balance-chart-extremes small { font-size: 12px; overflow-wrap: anywhere; }
.balance-chart-extremes strong { font-size: 16px; overflow-wrap: anywhere; }
.balance-chart-table { border-top: 1px solid var(--border-subtle); margin-top: 16px; }
.balance-chart-table summary { min-height: 44px; padding: 12px 0; cursor: pointer; color: var(--text-muted); font-size: 12px; }
.balance-chart-table .table-wrap { max-height: 260px; overflow: auto; }
@media (max-width: 680px) {
  .balance-chart-readout { align-items: flex-start; gap: 6px; }
  .balance-chart-readout strong { font-size: 24px; }
  .balance-chart-change { flex-basis: 100%; }
  .balance-chart-extremes { gap: 8px; }
  .balance-chart-extremes > div { padding: 10px; }
  .balance-chart-scrubber label { gap: 8px; }
}

/* Reports Specific Styling */
.observer-card > .card-head,
.reports-kpi-grid > .stats-card:first-child > .card-head {
  background-color: var(--surface-2);
  border-bottom-color: var(--border);
}
.reports-kpi-grid {
  margin-bottom: 20px;
}
.report-subgroup {
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-subtle);
}
.report-subgroup.spaced {
  padding-top: 12px;
  border-bottom: none;
}
.report-subgroup-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--primary-text);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.balance-figure.sub-figure {
  font-size: 24px;
}

/* Toast & Dialog */
.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  max-width: 420px;
  padding: 14px 18px;
  border-radius: var(--radius);
  background-color: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  box-shadow: var(--shadow);
  z-index: 1000;
  font-size: 13px;
  line-height: 1.5;
}
.toast.error {
  border-color: var(--danger-border);
  color: var(--danger-ink);
  background-color: var(--danger-bg);
}
dialog {
  width: min(560px, calc(100% - 32px));
  max-height: 90vh;
  background-color: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 0;
  box-shadow: var(--shadow);
}
dialog::backdrop {
  background-color: rgba(0, 0, 0, 0.65);
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
#modal-content {
  padding: 20px;
}
.confirm-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}
.link-box {
  display: grid;
  gap: 12px;
}
textarea#created-url {
  resize: vertical;
  min-height: 80px;
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 13px;
}
.admin-login {
  max-width: 440px;
  margin: 40px auto;
}
.error-page {
  max-width: 540px;
  margin: 40px auto;
}
.loading-card {
  padding: 48px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
}

/* Responsive & Breakpoints */
@media (max-width: 960px) {
  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid, .grid.equal, .session-route .operation-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 680px) {
  .topbar-inner {
    padding: 8px 12px;
    height: 60px;
    min-height: 60px;
    flex-wrap: nowrap;
    gap: 8px;
  }
  .topbar-brand-nav {
    gap: 8px;
    width: auto;
    min-width: 0;
  }
  .brand {
    min-width: 44px;
    min-height: 44px;
    justify-content: center;
  }
  .brand-text { display: none; }
  .nav-links {
    gap: 4px;
  }
  .nav-links a {
    padding: 6px 8px;
    font-size: 12px;
    min-height: 44px;
    white-space: nowrap;
  }
  .topbar-actions {
    width: auto;
    gap: 8px;
    border: 0;
    padding: 0;
  }
  .connection {
    width: 24px;
    height: 24px;
    padding: 0;
    justify-content: center;
  }
  .connection-text {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
  main {
    padding: 12px;
    min-width: 0;
  }
  h1 { font-size: 20px; overflow-wrap: anywhere; }
  .card, .card-body, .card-head, .grid > * { min-width: 0; }
  .card-head { padding: 12px; }
  .card-body { padding: 12px; }
  .copy-link {
    width: 44px;
    min-width: 44px;
    padding: 0;
  }
  .copy-link-label { display: none; }
  .session-heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    gap: 8px;
    margin-bottom: 12px;
  }
  .session-heading > div:first-child { min-width: 0; }
  .session-heading h1 { font-size: 18px; line-height: 1.3; }
  .session-heading .toolbar { gap: 4px; flex-wrap: nowrap; }
  .account-menu > summary { padding: 8px 10px; font-size: 12px; }
  .account-line { gap: 4px 6px; font-size: 12px; }
  .session-idle-status { flex-basis: 100%; font-size: 11px; }
  .session-tabs {
    position: sticky;
    top: 60px;
    z-index: 30;
    background-color: var(--bg);
    margin-bottom: 12px;
    gap: 0;
  }
  .session-tabs button { flex: 1; padding: 10px 8px; }
  .session-route [data-panel] { scroll-margin-top: 120px; }
  .session-onboarding { gap: 8px; padding: 8px 10px; margin-bottom: 12px; }
  .session-onboarding strong { font-size: 12px; }
  .session-gate { margin: 20px auto; }
  .gate-topline { gap: 8px; }
  .field input, .field select, .field textarea, .search-input {
    min-width: 0;
    max-width: 100%;
    font-size: 16px;
  }
  form .form-error:empty { display: none; }
  .page-footer {
    padding: 16px 12px calc(16px + env(safe-area-inset-bottom));
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 12px;
  }
  .metric {
    padding: 8px 10px;
  }
  .metric-label {
    font-size: 12px;
    margin-bottom: 2px;
  }
  .metric-value {
    font-size: 20px;
    margin: 6px 0 4px;
  }
  .metric-sub {
    font-size: 12px;
    margin-top: 2px;
  }
  .session-route .operation-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
  }
  .session-route .operation-grid .metrics { margin-bottom: 0; }
  .control-card .prediction { padding: 10px 12px; margin: 0 0 8px; }
  .control-card .prediction-side { font-size: 26px; flex-wrap: wrap; }
  .control-card .prediction small { font-size: 12px; }
  .control-mode { margin-bottom: 8px; }
  .control-stake { padding: 0 8px 0 12px; margin-bottom: 8px; gap: 8px; }
  .control-stake strong { font-size: 18px; overflow-wrap: anywhere; }
  .round-status { margin-bottom: 8px; padding: 10px; }
  .round-status-row { gap: 6px; flex-wrap: wrap; font-size: 12px; }
  .auto-actions { margin: 8px 0; gap: 8px; }
  .auto-actions .button { min-height: 48px; padding: 8px; }
  .control-helper:empty, #pending-note:empty { display: none; }
  .manual-actions { margin-top: 8px; padding-top: 4px; }
  .segmented button { min-height: 44px; }
  .road-legend { gap: 8px 12px; flex-wrap: wrap; }
  .road-result, .note, .event > div { overflow-wrap: anywhere; }
  .event { grid-template-columns: 64px minmax(0, 1fr); gap: 8px; }
  .table-filters { align-items: stretch; gap: 8px; }
  .table-filters .search-input { max-width: none; width: 100%; }
  .table-filters select { flex: 1; min-width: 0; font-size: 16px; }
  .pagination { padding: 12px; gap: 8px; flex-wrap: wrap; }
  .form-actions > .button { flex: 1; }
  #modal {
    width: calc(100% - 24px);
    max-width: 540px;
    max-height: calc(100dvh - 24px);
    padding: 16px;
    overflow-y: auto;
  }
  .stat-pair-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
  }
  .stat-box { padding: 12px; }
  .stat-box .metric-value { font-size: 24px; }
  .prediction-door-name {
    font-size: 34px;
  }
  .form-grid {
    grid-template-columns: 1fr;
  }
  .road {
    grid-template-rows: repeat(6, 44px);
    grid-auto-columns: 44px;
    min-height: 294px;
  }
  .bead {
    width: 44px;
    height: 44px;
    min-width: 44px;
    min-height: 44px;
    font-size: 14px;
  }
  .toast {
    left: 16px;
    right: 16px;
    bottom: 16px;
    max-width: none;
  }
  .account-popover {
    left: auto;
    right: 0;
    width: min(280px, calc(100vw - 24px));
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}
.game-picker { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px; margin-bottom: 32px; }
.game-choice { display: grid; grid-template-columns: 64px minmax(0,1fr); gap: 20px; align-items: center; padding: 24px; }
.game-choice img { object-fit: contain; }
.game-choice h2 { margin: 0 0 6px; font-size: 22px; }
.game-choice p { margin: 0; }
.game-choice .button { grid-column: 1 / -1; min-height: 44px; }
.game-intro { display:flex; align-items:center; gap:24px; padding:32px; }
.game-intro img { object-fit:contain; flex-shrink:0; }
.game-intro h2 { margin:0 0 12px; }
.game-intro p { margin:8px 0 0; }
body[data-page="home"][data-game=""] .brand-text { display:inline; }
@media(max-width:680px) { .game-intro { padding:20px; gap:16px; align-items:flex-start; } .game-intro img { width:56px; height:56px; } }
.section-heading { display: flex; align-items: baseline; flex-wrap: wrap; gap: 8px 16px; margin-bottom: 16px; }
.section-heading h2 { margin: 0; font-size: 20px; }
@media (max-width:680px) { .game-picker { grid-template-columns: 1fr; gap: 16px; } .game-choice { padding: 20px; gap: 16px; } }