:root {
    --felt: #166534;
    --felt-dark: #14532d;
    --gold: #fbbf24;
    --gold-dark: #b45309;
    --card-white: #f9fafb;
    --card-border: #1f2937;
    --red: #dc2626;
    --black: #1a1f2c;
    --bg: #fef3c7;
    --card: #ffffff;
    --ink: #1a1f2c;
    --muted: #6b7280;
    --shadow: 0 4px 10px rgba(0,0,0,.12);
    --danger: #dc2626;
    --success: #059669;
}
* { box-sizing: border-box; }
body.sim-body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    line-height: 1.55;
}
.sim-header {
    background: linear-gradient(120deg, var(--felt-dark), var(--felt), var(--gold-dark));
    color: #fff;
    padding: 22px 15px;
    text-align: center;
    box-shadow: var(--shadow);
}
.sim-header h1 { margin: 0; font-size: 1.7em; }
.sim-subtitle { margin: 6px 0 0; color: #fef3c7; font-weight: 500; }

.sim-main {
    max-width: 1080px;
    margin: 0 auto;
    padding: 15px;
    display: grid;
    gap: 15px;
}
.panel {
    background: var(--card);
    border-radius: 12px;
    padding: 15px 18px;
    box-shadow: var(--shadow);
    border-left: 6px solid var(--felt);
}
.panel h2 {
    color: var(--felt-dark);
    margin: 0 0 12px;
    font-size: 1.15em;
    border-bottom: 1px dashed #ddd;
    padding-bottom: 8px;
}
.panel h3 {
    color: var(--felt-dark);
    margin: 10px 0 8px;
    font-size: 1em;
}

.ctrl-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px 14px;
}
.ctrl-grid label {
    display: flex;
    flex-direction: column;
    font-size: .85em;
    color: var(--muted);
    gap: 4px;
}
.ctrl-grid select, .ctrl-grid input {
    padding: 7px 8px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-size: 1em;
    background: #f9fafb;
    color: var(--ink);
}

.btn-row { margin-top: 12px; display: flex; flex-wrap: wrap; gap: 8px; }
.btn-row button {
    padding: 9px 16px;
    border: none;
    border-radius: 8px;
    background: var(--felt);
    color: #fff;
    font-size: .95em;
    font-weight: 600;
    cursor: pointer;
    transition: background .12s;
}
.btn-row button:hover:not(:disabled) { background: var(--felt-dark); }
.btn-secondary { background: #6b7280 !important; }
.btn-secondary:hover:not(:disabled) { background: #4b5563 !important; }
.btn-danger { background: #b45309 !important; }
.btn-danger:hover:not(:disabled) { background: #92400e !important; }

.hint { color: var(--muted); font-size: .88em; margin: 8px 0 0; line-height: 1.55; }
.hint b { color: var(--ink); }

.intro-panel { border-left-color: var(--gold-dark); }

/* Shoe stats grid */
.shoe-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 8px;
    margin-bottom: 12px;
}
.stat-cell {
    background: #f0fdf4;
    border: 1px solid #86efac;
    border-radius: 8px;
    padding: 8px 10px;
    text-align: center;
}
.stat-cell.reveal {
    background: #fef3c7;
    border-color: #fbbf24;
}
.stat-cell.reveal.hidden .stat-val { color: #b45309; }
.stat-label {
    font-size: .72em;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: .5px;
    font-weight: 600;
}
.stat-val {
    font-family: ui-monospace, SFMono-Regular, monospace;
    font-size: 1.3em;
    font-weight: 800;
    color: var(--felt-dark);
    margin-top: 2px;
}
.stat-cell.reveal .stat-val { color: #78350f; }

/* Cards area */
.cards-area {
    min-height: 200px;
    background: linear-gradient(135deg, var(--felt-dark), var(--felt));
    border: 4px solid var(--gold-dark);
    border-radius: 12px;
    padding: 14px;
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    gap: 6px;
    box-shadow: inset 0 3px 12px rgba(0,0,0,.4);
}
.cards-empty {
    color: rgba(255,255,255,.6);
    font-style: italic;
    font-size: 1em;
    margin: auto;
}
.card {
    width: 52px;
    height: 72px;
    background: var(--card-white);
    border: 1.5px solid var(--card-border);
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 2px 3px 4px rgba(0,0,0,.3);
    position: relative;
    font-family: ui-monospace, SFMono-Regular, monospace;
    font-weight: 800;
    transform-origin: bottom center;
    animation: deal-in .3s ease-out;
}
@keyframes deal-in {
    from { transform: translateY(-30px) rotate(-8deg); opacity: 0; }
    to { transform: translateY(0) rotate(0); opacity: 1; }
}
.card.newest {
    box-shadow: 0 0 0 3px var(--gold), 2px 3px 4px rgba(0,0,0,.3);
    z-index: 5;
}
.card .rank {
    font-size: 1.4em;
    line-height: 1;
    margin-bottom: 2px;
}
.card .suit {
    font-size: 1.5em;
    line-height: 1;
}
.card.red { color: var(--red); }
.card.black { color: var(--black); }
.card .hilo {
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%);
    background: #b45309;
    color: white;
    font-size: .7em;
    font-weight: 700;
    padding: 1px 5px;
    border-radius: 3px;
    font-family: sans-serif;
}
.card .hilo.plus { background: #059669; }
.card .hilo.neg { background: #dc2626; }
.card .hilo.zero { background: #6b7280; }

/* Deal controls */
.deal-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    padding: 10px 12px;
    background: #fef3c7;
    border-radius: 8px;
    border: 1px solid #fbbf24;
}
.deal-controls button {
    padding: 7px 14px;
    border: none;
    border-radius: 6px;
    background: var(--felt);
    color: white;
    font-weight: 600;
    cursor: pointer;
    font-size: .9em;
}
.deal-controls button:hover:not(:disabled) { background: var(--felt-dark); }
.deal-controls .btn-secondary { background: #6b7280; }
.deal-controls .btn-danger { background: #b45309; }
.deal-controls .btn-danger:hover:not(:disabled) { background: #92400e; }
.deal-speed-live {
    font-size: .85em;
    color: var(--muted);
    display: flex;
    align-items: center;
    gap: 6px;
}
.deal-speed-live input {
    width: 80px;
    padding: 5px 7px;
    border: 1px solid #cbd5e1;
    border-radius: 5px;
    font-family: ui-monospace, monospace;
}

/* Question panel */
.question-panel {
    border-left-color: var(--gold-dark);
    background: linear-gradient(180deg, #fef9c3 0%, #ffffff 100%);
    animation: q-in .3s ease-out;
}
@keyframes q-in {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}
.question-panel h2 { color: var(--gold-dark); font-size: 1.25em; }
.answer-row {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-top: 8px;
}
.answer-row input {
    flex: 1;
    padding: 10px 12px;
    font-size: 1.1em;
    border: 2px solid var(--gold);
    border-radius: 8px;
    font-family: ui-monospace, monospace;
    font-weight: 700;
    text-align: center;
    background: white;
}
.answer-row input:focus {
    outline: none;
    border-color: var(--felt);
    box-shadow: 0 0 0 3px rgba(22, 101, 52, .15);
}
.answer-row button {
    padding: 10px 20px;
    background: var(--gold-dark);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    font-size: 1em;
}
.answer-row button:hover { background: #92400e; }

/* Feedback panel */
.feedback-panel { border-left-color: var(--success); }
.feedback-panel.wrong { border-left-color: var(--danger); }
.feedback-panel h2 { font-size: 1.1em; }
.feedback-panel.correct h2 { color: var(--success); }
.feedback-panel.wrong h2 { color: var(--danger); }

.calc-table {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 10px 14px;
    margin: 10px 0;
    font-family: ui-monospace, SFMono-Regular, monospace;
    font-size: .9em;
    overflow-x: auto;
}
.calc-table table { border-collapse: collapse; width: 100%; }
.calc-table th, .calc-table td {
    padding: 4px 8px;
    text-align: center;
    border-bottom: 1px solid #e5e7eb;
}
.calc-table th { background: #f3f4f6; font-weight: 700; color: var(--felt-dark); }
.calc-table td.pos { color: var(--success); font-weight: 700; }
.calc-table td.neg { color: var(--danger); font-weight: 700; }
.calc-table td.zero { color: var(--muted); }

.answer-summary {
    background: #f9fafb;
    border-radius: 8px;
    padding: 8px 12px;
    margin: 8px 0;
    font-family: ui-monospace, SFMono-Regular, monospace;
    font-size: .95em;
}
.answer-summary .row { display: flex; justify-content: space-between; margin: 3px 0; }
.answer-summary b { color: var(--felt-dark); }

/* Stats panel */
.stats-panel { border-left-color: var(--gold-dark); }
.stats-summary {
    background: #fef9c3;
    border-radius: 8px;
    padding: 12px 16px;
    font-family: ui-monospace, monospace;
    font-size: .95em;
}
.stats-summary .row { display: flex; justify-content: space-between; margin: 4px 0; }
.stats-summary .row b { color: var(--gold-dark); }
.stats-summary .accuracy-good { color: var(--success); font-weight: 700; }
.stats-summary .accuracy-bad { color: var(--danger); font-weight: 700; }

/* Gameover panel */
.gameover-panel { border-left-color: var(--gold); background: linear-gradient(180deg, #fef9c3 0%, #ffffff 100%); }
.gameover-panel h2 { color: var(--gold-dark); font-size: 1.3em; }
.gameover-body {
    background: #f9fafb;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: .95em;
    line-height: 1.7;
}
.gameover-body .verdict-good { color: var(--success); font-weight: 700; }
.gameover-body .verdict-bad { color: var(--danger); font-weight: 700; }
.gameover-body ul { margin: 6px 0; padding-left: 22px; }

/* Reveal state (toggleable) */
.stat-cell.reveal.hidden .stat-val { color: transparent; text-shadow: 0 0 8px rgba(180, 83, 9, 0.5); }
.stat-cell.reveal.hidden .stat-val::before { content: '?'; color: #b45309; }

/* 氣氛標籤（獨立可切換） */
.stat-cell.reveal-edge { background: #ede9fe; border-color: #a78bfa; }
.stat-cell.reveal-edge .stat-val { font-size: 1em; }
.edge-mood.mood-good { color: #059669; font-weight: 800; }
.edge-mood.mood-ok { color: #b45309; font-weight: 700; }
.edge-mood.mood-neutral { color: #6b7280; font-weight: 600; }
.edge-mood.mood-bad { color: #dc2626; font-weight: 800; }

/* Phase 2：下注按鈕 */
.bet-section {
    background: #fef3c7;
    border: 2px solid #fbbf24;
    border-radius: 10px;
    padding: 14px 16px;
    margin: 14px 0;
    animation: bet-in .4s ease-out;
}
@keyframes bet-in {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}
.bet-section h3 { color: var(--gold-dark); margin: 0 0 8px; font-size: 1.15em; }
.hint-mini { font-family: ui-monospace, SFMono-Regular, monospace; font-size: .82em; color: var(--muted); }
.bet-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
    gap: 8px;
    margin-top: 12px;
}
.bet-btn {
    padding: 14px 8px;
    border: 2px solid var(--felt-dark);
    border-radius: 8px;
    background: white;
    color: var(--felt-dark);
    font-size: 1.15em;
    font-weight: 800;
    cursor: pointer;
    font-family: ui-monospace, SFMono-Regular, monospace;
    transition: all .12s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
}
.bet-btn:hover {
    background: var(--felt-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,.15);
}
.bet-btn .bet-label {
    font-size: .55em;
    font-weight: 500;
    font-family: sans-serif;
    color: #9ca3af;
}
.bet-btn:hover .bet-label { color: rgba(255,255,255,.7); }

/* Bet analysis (after clicking) */
#bet-analysis {
    background: #f0fdf4;
    border: 2px solid #86efac;
    border-radius: 10px;
    padding: 12px 16px;
    margin: 14px 0;
    animation: bet-in .3s ease-out;
}
#bet-analysis.bet-perfect { background: #dcfce7; border-color: #22c55e; }
#bet-analysis.bet-over { background: #fef3c7; border-color: #fbbf24; }
#bet-analysis.bet-under { background: #dbeafe; border-color: #60a5fa; }
#bet-analysis h4 {
    margin: 0 0 8px;
    font-size: 1.05em;
    color: var(--felt-dark);
}
#bet-analysis .bet-details {
    font-family: ui-monospace, SFMono-Regular, monospace;
    background: white;
    border-radius: 6px;
    padding: 8px 12px;
    margin: 6px 0;
    line-height: 1.7;
}
#bet-analysis .bet-details .row { display: flex; justify-content: space-between; margin: 2px 0; }
#bet-analysis .bet-msg {
    font-size: .95em;
    line-height: 1.5;
    margin: 8px 0 0;
}

/* Session summary betting analysis — 突出「知道 vs 做到」核心指標 */
.knowing-vs-doing {
    background: linear-gradient(135deg, #fef3c7, #fef9c3);
    border: 3px solid var(--gold-dark);
    border-radius: 10px;
    padding: 14px 18px;
    margin: 14px 0;
    box-shadow: 0 3px 10px rgba(180, 83, 9, .15);
}
.knowing-vs-doing h3 {
    color: var(--gold-dark);
    margin: 0 0 6px;
    font-size: 1.15em;
    border: none;
    padding: 0;
}
.knowing-vs-doing .big-number {
    font-family: ui-monospace, SFMono-Regular, monospace;
    font-size: 2em;
    font-weight: 900;
    color: var(--gold-dark);
    text-align: center;
    margin: 10px 0;
}
.knowing-vs-doing .big-number.high { color: var(--danger); }
.knowing-vs-doing .big-number.low { color: var(--success); }
.knowing-vs-doing .msg {
    font-size: .95em;
    line-height: 1.55;
    color: var(--ink);
}

.sim-footer {
    text-align: center;
    color: var(--muted);
    padding: 10px 5px 30px;
    font-size: .85em;
}
.sim-footer a { color: var(--felt-dark); }

@media (min-width: 700px) {
    .sim-main { padding: 20px; gap: 18px; }
}