/**
 * Blackjack Strategy Trainer - Casino Themed Styles
 * Optimized for rapid-fire training
 */

/* ============================================
   CSS Variables
   ============================================ */
:root {
    /* Casino felt green */
    --felt-green: #1a5c3a;
    --felt-dark: #0f3d26;
    --felt-light: #2a7c4a;

    /* Card colors */
    --card-white: #fafafa;
    --card-shadow: rgba(0, 0, 0, 0.35);
    --suit-red: #d32f2f;
    --suit-black: #1a1a1a;

    /* Feedback */
    --correct-green: #4caf50;
    --correct-glow: rgba(76, 175, 80, 0.4);
    --incorrect-red: #f44336;
    --incorrect-glow: rgba(244, 67, 54, 0.4);

    /* Gold accents */
    --gold: #ffd700;
    --gold-dark: #c5a600;

    /* Text */
    --text-light: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.7);
    --text-dark: #1a1a1a;

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

    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* ============================================
   Base Styles
   ============================================ */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, var(--felt-dark) 0%, var(--felt-green) 50%, var(--felt-dark) 100%);
    color: var(--text-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    outline: none;
    transition: background-color 0.15s ease;
}

/* Feedback flash animations */
body.correct {
    animation: flash-correct 0.15s ease-out;
}

body.incorrect {
    animation: flash-incorrect 0.15s ease-out;
}

@keyframes flash-correct {
    0%, 100% { background-color: transparent; }
    50% { background-color: var(--correct-glow); }
}

@keyframes flash-incorrect {
    0%, 100% { background-color: transparent; }
    50% { background-color: var(--incorrect-glow); }
}

/* ============================================
   App Container
   ============================================ */
.app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-md);
}

/* ============================================
   Header
   ============================================ */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.logo h1 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 2px;
    margin: 0;
}

.logo .subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stats-bar {
    display: flex;
    gap: var(--space-lg);
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gold);
}

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

.mode-select {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-light);
    padding: var(--space-sm) var(--space-md);
    border-radius: 6px;
    font-size: 0.875rem;
    cursor: pointer;
}

.mode-select option {
    background: var(--felt-dark);
    color: var(--text-light);
}

.settings-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--text-light);
    padding: var(--space-sm);
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.settings-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ============================================
   Game Area
   ============================================ */
.game-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: var(--space-xl);
    padding: var(--space-xl) 0;
    position: relative;
}

.section-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    text-align: center;
    margin-bottom: var(--space-md);
}

/* Card containers */
.cards-container {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
}

.dealer-section,
.player-section {
    text-align: center;
}

.hand-label {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--gold);
    margin-top: var(--space-md);
    font-weight: 600;
}

/* ============================================
   Cards
   ============================================ */
.card {
    width: 80px;
    height: 112px;
    background: var(--card-white);
    border-radius: 8px;
    box-shadow: 0 4px 12px var(--card-shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    transition: transform 0.1s ease, box-shadow 0.1s ease;
    position: relative;
}

.card::before {
    content: '';
    position: absolute;
    inset: 3px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 6px;
    pointer-events: none;
}

.card.red {
    color: var(--suit-red);
}

.card.black {
    color: var(--suit-black);
}

.card-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
}

.card-suit {
    font-size: 1.75rem;
    line-height: 1;
    margin-top: var(--space-xs);
}

.player .card {
    transform: translateY(0);
}

body.correct .player .card {
    box-shadow: 0 0 20px var(--correct-glow);
}

body.incorrect .player .card {
    box-shadow: 0 0 20px var(--incorrect-glow);
}

/* ============================================
   Feedback
   ============================================ */
.feedback {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) translateY(100%);
    background: rgba(0, 0, 0, 0.9);
    border-radius: 12px;
    padding: var(--space-lg);
    width: 100%;
    max-width: 400px;
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    z-index: 10;
}

.feedback.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.feedback-content {
    text-align: center;
}

.feedback-wrong {
    color: var(--incorrect-red);
    font-size: 0.875rem;
    margin-bottom: var(--space-sm);
}

.feedback-correct {
    color: var(--correct-green);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.feedback-explanation {
    color: var(--text-muted);
    font-size: 0.875rem;
    line-height: 1.5;
}

.feedback-continue {
    margin-top: var(--space-md);
    font-size: 0.75rem;
    color: var(--text-muted);
    opacity: 0.7;
}

.feedback-continue kbd {
    background: rgba(255, 255, 255, 0.15);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: var(--font-body);
}

/* ============================================
   Action Buttons
   ============================================ */
.actions {
    padding: var(--space-lg) 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.action-buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
}

.action-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 90px;
    padding: var(--space-md) var(--space-lg);
    border: 2px solid;
    border-radius: 12px;
    font-family: var(--font-body);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    background: transparent;
}

.action-btn .btn-label {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
}

.action-btn kbd {
    font-family: var(--font-body);
    font-size: 0.75rem;
    opacity: 0.6;
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
}

/* Button variants */
.action-btn.hit {
    border-color: #4fc3f7;
    color: #4fc3f7;
}

.action-btn.hit:hover:not(.disabled) {
    background: rgba(79, 195, 247, 0.2);
    transform: translateY(-2px);
}

.action-btn.stand {
    border-color: #81c784;
    color: #81c784;
}

.action-btn.stand:hover:not(.disabled) {
    background: rgba(129, 199, 132, 0.2);
    transform: translateY(-2px);
}

.action-btn.double {
    border-color: var(--gold);
    color: var(--gold);
}

.action-btn.double:hover:not(.disabled) {
    background: rgba(255, 215, 0, 0.2);
    transform: translateY(-2px);
}

.action-btn.split {
    border-color: #ba68c8;
    color: #ba68c8;
}

.action-btn.split:hover:not(.disabled) {
    background: rgba(186, 104, 200, 0.2);
    transform: translateY(-2px);
}

.action-btn.surrender {
    border-color: #ff8a65;
    color: #ff8a65;
}

.action-btn.surrender:hover:not(.disabled) {
    background: rgba(255, 138, 101, 0.2);
    transform: translateY(-2px);
}

.action-btn.disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.keyboard-hint {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--space-md);
}

/* ============================================
   Modal
   ============================================ */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    z-index: 100;
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--felt-dark);
    border-radius: 16px;
    width: 90%;
    max-width: 480px;
    max-height: 80vh;
    overflow-y: auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.modal-header h2 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--gold);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-sm);
    line-height: 1;
}

.close-btn:hover {
    color: var(--text-light);
}

.modal-body {
    padding: var(--space-lg);
}

.modal-section {
    margin-bottom: var(--space-xl);
}

.modal-section h3 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-row span:last-child {
    font-weight: 600;
    color: var(--gold);
}

.weak-spots-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
}

.weak-spot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) var(--space-md);
    background: rgba(244, 67, 54, 0.1);
    border-radius: 8px;
    margin-bottom: var(--space-sm);
}

.weak-hand {
    font-weight: 500;
}

.weak-accuracy {
    color: var(--incorrect-red);
    font-weight: 600;
}

.no-data {
    color: var(--text-muted);
    font-style: italic;
}

.rules-list {
    list-style: none;
    padding: 0;
}

.rules-list li {
    padding: var(--space-sm) 0;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.rules-list li::before {
    content: '✓';
    color: var(--correct-green);
}

.modal-actions {
    text-align: center;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.reset-btn {
    background: rgba(244, 67, 54, 0.2);
    border: 1px solid var(--incorrect-red);
    color: var(--incorrect-red);
    padding: var(--space-sm) var(--space-lg);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.2s;
}

.reset-btn:hover {
    background: rgba(244, 67, 54, 0.3);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 600px) {
    .app {
        padding: var(--space-sm);
    }

    .header {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .stats-bar {
        width: 100%;
        justify-content: space-around;
    }

    .card {
        width: 65px;
        height: 91px;
    }

    .card-value {
        font-size: 1.5rem;
    }

    .card-suit {
        font-size: 1.25rem;
    }

    .action-btn {
        min-width: 70px;
        padding: var(--space-sm) var(--space-md);
    }

    .action-btn .btn-label {
        font-size: 0.8rem;
    }

    .hand-label {
        font-size: 1.25rem;
    }

    .keyboard-hint {
        display: none;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes card-deal {
    0% {
        opacity: 0;
        transform: translateY(-20px) rotate(-5deg);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotate(0);
    }
}

.card {
    animation: card-deal 0.2s ease-out;
}

/* Hover effects for desktop */
@media (hover: hover) {
    .card:hover {
        transform: translateY(-4px);
        box-shadow: 0 8px 20px var(--card-shadow);
    }
}