/* ==========================================================================
   Blackjack Card Counter Trainer — Styles
   Dark theme, card-table green aesthetic
   ========================================================================== */

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

:root {
    --bg-dark: #0a1f14;
    --bg-felt: #14503a;
    --bg-felt-light: #1a6b4a;
    --bg-card: #fafaf5;
    --text-primary: #e8e6e0;
    --text-secondary: #8bab9a;
    --text-muted: #4a7c5c;
    --accent-gold: #c9a84c;
    --accent-gold-dim: #8a7433;
    --color-correct: #4CAF50;
    --color-wrong: #e04040;
    --color-push: #c9a84c;
    --btn-primary: #1a6b4a;
    --btn-primary-hover: #22855e;
    --btn-danger: #8b2020;
    --card-shadow: 0 2px 8px rgba(0,0,0,0.4);
    --radius: 10px;
    --radius-sm: 6px;
    --transition: 0.25s ease;
}

html { font-size: 16px; }
body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
}

/* ---------- Screens ---------- */
.screen {
    display: none;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 16px;
    max-width: 600px;
    margin: 0 auto;
}
.screen.active { display: flex; flex-direction: column; }

/* ---------- Menu Screen ---------- */
#menu-screen {
    justify-content: flex-start;
    gap: 20px;
    padding-top: 40px;
}

.menu-header {
    text-align: center;
    margin-bottom: 8px;
}
.menu-header h1 {
    font-size: 1.6rem;
    color: var(--accent-gold);
    font-weight: 700;
    letter-spacing: 0.03em;
}
.menu-header p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 4px;
}

.menu-card {
    background: linear-gradient(145deg, #123829, #0e2d20);
    border: 1px solid #1a5a40;
    border-radius: var(--radius);
    padding: 20px;
    cursor: pointer;
    transition: transform var(--transition), border-color var(--transition);
}
.menu-card:hover, .menu-card:active {
    transform: translateY(-2px);
    border-color: var(--accent-gold-dim);
}
.menu-card h2 {
    font-size: 1.15rem;
    color: var(--accent-gold);
    margin-bottom: 4px;
}
.menu-card .menu-desc {
    color: var(--text-secondary);
    font-size: 0.82rem;
    margin-bottom: 12px;
    line-height: 1.4;
}
.menu-stats {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}
.menu-stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.menu-stat .label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
}
.menu-stat .value {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.menu-footer {
    display: flex;
    justify-content: center;
    margin-top: 8px;
}

/* ---------- Sound Toggle ---------- */
.sound-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    background: none;
    border: 1px solid var(--text-muted);
    border-radius: 20px;
    padding: 6px 14px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition);
}
.sound-toggle.active {
    border-color: var(--accent-gold-dim);
    color: var(--accent-gold);
}
.sound-toggle .icon { font-size: 1.1rem; }

/* ---------- Game Header ---------- */
.game-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 12px;
    border-bottom: 1px solid #1a3a28;
    margin-bottom: 16px;
}
.game-header h2 {
    font-size: 1.1rem;
    color: var(--accent-gold);
}
.back-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    transition: color var(--transition);
    line-height: 1;
}
.back-btn:hover { color: var(--text-primary); }
.help-btn {
    background: none;
    border: 1px solid var(--text-muted);
    color: var(--text-secondary);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}
.help-btn:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

/* ---------- Playing Cards ---------- */
.playing-card {
    width: 72px;
    height: 104px;
    perspective: 600px;
    display: inline-block;
    margin: 0 4px;
    flex-shrink: 0;
}
.card-inner {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
    border-radius: 8px;
}
.face-down .card-inner {
    transform: rotateY(180deg);
}
.flipping .card-inner {
    animation: flipAnim 0.5s ease;
}
@keyframes flipAnim {
    0% { transform: rotateY(180deg); }
    100% { transform: rotateY(0deg); }
}

.card-front, .card-back {
    position: absolute;
    inset: 0;
    border-radius: 8px;
    backface-visibility: hidden;
}
.card-front {
    background: var(--bg-card);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 5px;
    box-shadow: var(--card-shadow);
}
.card-front.red { color: #c0392b; }
.card-front.black { color: #1a1a1a; }

.card-corner {
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1;
}
.card-corner .rank { font-size: 0.95rem; font-weight: 700; }
.card-corner .suit { font-size: 0.75rem; margin-top: -1px; }
.bottom-right { align-self: flex-end; transform: rotate(180deg); }

.card-center {
    font-size: 1.8rem;
    text-align: center;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-back {
    background: #1a4a6b;
    transform: rotateY(180deg);
    box-shadow: var(--card-shadow);
    display: flex;
    align-items: center;
    justify-content: center;
}
.card-back-pattern {
    width: 80%;
    height: 85%;
    border-radius: 4px;
    border: 2px solid #2a6a90;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 4px,
        #1e5577 4px,
        #1e5577 5px
    );
}

/* Card deal animation */
.dealing {
    opacity: 0;
    transform: translateY(-30px) scale(0.8);
    transition: opacity 0.3s ease, transform 0.3s ease;
}
.playing-card:not(.dealing) {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition: opacity 0.3s ease, transform 0.3s ease;
}
.fading-out {
    opacity: 0;
    transform: translateX(-30px) scale(0.8);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

/* ---------- Card Areas ---------- */
.card-area {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 120px;
    gap: 4px;
    flex-wrap: wrap;
}

.hand-label {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 4px 0;
    min-height: 1.2em;
}

/* ---------- Action Buttons ---------- */
.actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
    margin: 16px 0;
}
.btn {
    padding: 12px 22px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    touch-action: manipulation;
    min-width: 80px;
    text-align: center;
}
.btn-action {
    background: var(--btn-primary);
    color: var(--text-primary);
}
.btn-action:hover:not(:disabled) { background: var(--btn-primary-hover); }
.btn-action:active:not(:disabled) { transform: scale(0.97); }
.btn-action.btn-disabled, .btn-action:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.btn-gold {
    background: linear-gradient(135deg, var(--accent-gold), #a8892e);
    color: #1a1a0a;
    font-weight: 700;
}
.btn-gold:hover { filter: brightness(1.1); }

.btn-secondary {
    background: #1a3a28;
    color: var(--text-secondary);
    border: 1px solid #2a5a40;
}
.btn-secondary:hover { background: #224a34; }

.btn-restart {
    background: var(--btn-danger);
    color: var(--text-primary);
}
.btn-restart:hover { background: #a02828; }

/* ---------- Feedback ---------- */
.feedback {
    text-align: center;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    min-height: 20px;
    transition: all var(--transition);
    line-height: 1.5;
}
.feedback.correct {
    background: rgba(76, 175, 80, 0.15);
    border: 1px solid rgba(76, 175, 80, 0.3);
    color: var(--color-correct);
}
.feedback.wrong {
    background: rgba(224, 64, 64, 0.15);
    border: 1px solid rgba(224, 64, 64, 0.3);
    color: var(--color-wrong);
}
.feedback-icon { font-size: 1.1rem; margin-right: 4px; }
.feedback-explanation {
    margin-top: 6px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* ---------- Stats Bar ---------- */
.stats-bar {
    display: flex;
    justify-content: center;
    gap: 20px;
    padding: 10px 0;
    flex-wrap: wrap;
}
.stat {
    text-align: center;
}
.stat .stat-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}
.stat .stat-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

/* ---------- Game 2: Counting Specific ---------- */
.count-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
#count-card-area {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 140px;
    background: rgba(20, 80, 58, 0.3);
    border-radius: var(--radius);
    padding: 16px;
    gap: 6px;
    flex-wrap: wrap;
}

.lives {
    display: flex;
    gap: 4px;
    justify-content: center;
    font-size: 1.4rem;
}
.life.full { color: #e04040; }
.life.empty { color: #4a2020; }

/* Quiz overlay */
.quiz-overlay {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    background: rgba(10, 31, 20, 0.95);
    border: 1px solid var(--accent-gold-dim);
    border-radius: var(--radius);
    padding: 24px;
    margin: 8px 0;
}
.quiz-label {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}
.quiz-label.true-count { color: var(--accent-gold); }
.quiz-input {
    width: 120px;
    padding: 10px;
    font-size: 1.3rem;
    text-align: center;
    background: #0e2d20;
    border: 2px solid #2a5a40;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    outline: none;
}
.quiz-input:focus { border-color: var(--accent-gold); }

/* Speed indicator */
.speed-label {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Shuffle banner */
.shuffle-banner {
    display: none;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: rgba(201, 168, 76, 0.15);
    border: 1px solid var(--accent-gold-dim);
    border-radius: var(--radius);
    padding: 16px;
    color: var(--accent-gold);
    font-weight: 600;
    font-size: 1rem;
    animation: pulse 1s ease infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* Game over overlay */
.game-over {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    background: rgba(10, 31, 20, 0.95);
    border: 1px solid var(--accent-gold-dim);
    border-radius: var(--radius);
    padding: 30px;
    text-align: center;
}
.game-over h3 {
    font-size: 1.4rem;
    color: var(--accent-gold);
}

/* Penetration selector */
.penetration-setting {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
}
.penetration-setting select {
    background: #0e2d20;
    color: var(--text-primary);
    border: 1px solid #2a5a40;
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-size: 0.8rem;
    cursor: pointer;
}

/* ---------- Game 3: Betting Specific ---------- */
.bet-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.bet-info-bar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 10px;
    flex-wrap: wrap;
}
.bet-info-item {
    text-align: center;
}
.bet-info-item .info-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}
.bet-info-item .info-value {
    font-size: 1.2rem;
    font-weight: 700;
}
.tc-value { color: var(--accent-gold); }
.bankroll-value { color: var(--color-correct); }

.bet-input-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    padding: 16px;
    background: rgba(20, 80, 58, 0.2);
    border-radius: var(--radius);
}
.bet-input-area label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.bet-input {
    width: 140px;
    padding: 10px;
    font-size: 1.3rem;
    text-align: center;
    background: #0e2d20;
    border: 2px solid #2a5a40;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    outline: none;
}
.bet-input:focus { border-color: var(--accent-gold); }

.quick-bets {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    justify-content: center;
}
.quick-bet {
    padding: 6px 12px;
    background: #1a3a28;
    border: 1px solid #2a5a40;
    border-radius: 16px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition);
}
.quick-bet:hover:not(:disabled) { background: #224a34; color: var(--text-primary); }
.quick-bet:disabled { opacity: 0.3; cursor: not-allowed; }

/* Hand play area */
.play-area { display: none; }
.hand-result {
    text-align: center;
    padding: 10px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    margin: 8px 0;
    min-height: 20px;
}
.hand-result.win {
    background: rgba(76, 175, 80, 0.15);
    color: var(--color-correct);
}
.hand-result.lose {
    background: rgba(224, 64, 64, 0.15);
    color: var(--color-wrong);
}
.hand-result.push {
    background: rgba(201, 168, 76, 0.15);
    color: var(--color-push);
}

/* Chart */
.chart-container {
    background: #0a1f14;
    border: 1px solid #1a3a28;
    border-radius: var(--radius-sm);
    padding: 4px;
    margin-top: auto;
}
#bet-chart {
    width: 100%;
    height: 160px;
    display: block;
}

/* ---------- Decks Remaining Indicator ---------- */
.decks-indicator {
    display: flex;
    align-items: center;
    gap: 6px;
}
.decks-bar {
    width: 14px;
    height: 50px;
    background: #0e2d20;
    border: 1px solid #2a5a40;
    border-radius: 3px;
    position: relative;
    overflow: hidden;
}
.decks-fill {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, var(--accent-gold), var(--color-correct));
    transition: height 0.3s ease;
    border-radius: 2px;
}
.decks-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    white-space: nowrap;
}

/* ---------- Help Modal ---------- */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 100;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.modal-overlay.active { display: flex; }
.modal-box {
    background: #0e2d20;
    border: 1px solid #2a5a40;
    border-radius: var(--radius);
    padding: 24px;
    max-width: 480px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}
.modal-box h3 {
    color: var(--accent-gold);
    font-size: 1.2rem;
    margin-bottom: 12px;
}
.modal-box p, .modal-box li {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.6;
    margin-bottom: 8px;
}
.modal-box ul { padding-left: 20px; }
.modal-box strong { color: var(--text-primary); }
.modal-close {
    position: absolute;
    top: 12px;
    right: 12px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.4rem;
    cursor: pointer;
    line-height: 1;
    padding: 4px;
}
.modal-close:hover { color: var(--text-primary); }

/* ---------- Toast ---------- */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    z-index: 200;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
    pointer-events: none;
    max-width: 90vw;
    text-align: center;
}
.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}
.toast-success { background: rgba(76, 175, 80, 0.9); color: #fff; }
.toast-error { background: rgba(224, 64, 64, 0.9); color: #fff; }
.toast-info { background: rgba(201, 168, 76, 0.9); color: #1a1a0a; }

/* ---------- Shake animation ---------- */
.shake {
    animation: shake 0.4s ease;
}
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}

/* ---------- Game 4: Practice Arena ---------- */

/* Aid toggle buttons */
.arena-controls {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-bottom: 8px;
    flex-wrap: wrap;
}
.toggle-btn {
    padding: 5px 14px;
    border-radius: 16px;
    border: 1px solid var(--text-muted);
    background: none;
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}
.toggle-btn.active {
    border-color: var(--accent-gold-dim);
    background: rgba(201, 168, 76, 0.12);
    color: var(--accent-gold);
}

/* Arena info bar (extends .bet-info-bar) */
.arena-info-bar {
    background: rgba(20, 80, 58, 0.2);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
}

/* Stats strip */
.arena-stats-bar {
    padding: 6px 0;
    gap: 12px;
}
.arena-stats-bar .stat-value { font-size: 1.1rem; }

/* Arena container */
.arena-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Hi-Lo value badge on cards */
.hilo-badge {
    position: absolute;
    bottom: 3px;
    right: 3px;
    font-size: 0.6rem;
    font-weight: 700;
    padding: 1px 4px;
    border-radius: 4px;
    line-height: 1.4;
    pointer-events: none;
    z-index: 2;
}
.hilo-pos { background: rgba(76,175,80,0.85); color: #fff; }
.hilo-neg { background: rgba(224,64,64,0.85); color: #fff; }
.hilo-neu { background: rgba(100,100,100,0.7); color: #ddd; }

/* Split hand layout */
.player-hands-wrap {
    display: flex;
    gap: 8px;
    justify-content: center;
    flex-wrap: wrap;
}
.player-hand {
    flex: 1;
    min-width: 0;
    border-radius: var(--radius-sm);
    padding: 4px;
    transition: background var(--transition);
}
.player-hand.active-hand {
    background: rgba(201, 168, 76, 0.08);
    outline: 1px solid var(--accent-gold-dim);
}

/* Insurance offer bar */
.insurance-offer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    background: rgba(201, 168, 76, 0.1);
    border: 1px solid var(--accent-gold-dim);
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    font-size: 0.88rem;
    color: var(--accent-gold);
    font-weight: 600;
    flex-wrap: wrap;
}

/* Inline bet feedback (below bet input, before deal) */
.arena-bet-feedback {
    font-size: 0.82rem;
    font-weight: 600;
    text-align: center;
    min-height: 1.2em;
    transition: opacity 0.4s ease;
}
.arena-bet-feedback.bet-ok  { color: var(--color-correct); }
.arena-bet-feedback.bet-bad { color: var(--color-wrong); }

/* ---------- Responsive ---------- */
@media (max-width: 480px) {
    .screen { padding: 12px; }
    .menu-header h1 { font-size: 1.3rem; }
    .playing-card { width: 60px; height: 88px; }
    .card-corner .rank { font-size: 0.8rem; }
    .card-corner .suit { font-size: 0.65rem; }
    .card-center { font-size: 1.4rem; }
    .btn { padding: 10px 16px; font-size: 0.85rem; min-width: 70px; }
    .stats-bar { gap: 12px; }
    .stat .stat-value { font-size: 1.1rem; }
    .bet-info-bar { gap: 6px; }
    .bet-info-item .info-value { font-size: 1rem; }
    #bet-chart { height: 130px; }
}

@media (min-width: 768px) {
    .screen { padding: 24px; }
    .playing-card { width: 84px; height: 120px; }
    .card-corner .rank { font-size: 1.1rem; }
    .card-center { font-size: 2.2rem; }
    #bet-chart { height: 200px; }
}