/* ===== CSS VARIABLES ===== */
:root {
    /* Main Palette - Elegant & Subdued */
    --bg-primary: #0d0d12;
    --bg-secondary: #14141c;
    --bg-tertiary: #1c1c28;
    --bg-card: #1a1a24;
    --bg-card-hover: #222230;
    
    /* Text Colors */
    --text-primary: #f5f5f7;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    
    /* Accent Colors */
    --gold: #c9a962;
    --gold-light: #e0c887;
    --gold-dark: #a08840;
    
    /* Green - RARE ACCENT (only for wins/success) */
    --green-accent: #2d9469;
    --green-light: #3db87f;
    --green-glow: rgba(45, 148, 105, 0.3);
    
    /* Danger */
    --red: #c44545;
    --red-light: #e05555;
    --red-glow: rgba(196, 69, 69, 0.4);
    
    /* UI Elements */
    --border-color: #2a2a3a;
    --border-light: #3a3a4a;
    
    /* Tile States */
    --tile-bg: linear-gradient(145deg, #252535, #1e1e2a);
    --tile-hover: linear-gradient(145deg, #2a2a3c, #232332);
    --tile-revealed-safe: linear-gradient(145deg, #1a2e25, #152520);
    --tile-revealed-mine: linear-gradient(145deg, #2e1a1a, #251515);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-gold: 0 0 20px rgba(201, 169, 98, 0.2);
    
    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, sans-serif;
    
    /* Sizing */
    --grid-size: 5;
    --tile-size: 70px;
    --tile-gap: 8px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ===== LAYOUT ===== */
.casino-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
}

/* ===== HEADER ===== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    margin-bottom: 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    font-size: 28px;
    color: var(--gold);
    text-shadow: var(--shadow-gold);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 4px;
    background: linear-gradient(135deg, var(--gold-light), var(--gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.balance-display {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.balance-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.balance-value {
    font-size: 24px;
    font-weight: 600;
    color: var(--gold);
}

/* ===== MAIN GAME AREA ===== */
.game-area {
    display: grid;
    grid-template-columns: 280px 1fr 240px;
    gap: 24px;
    align-items: start;
}

/* ===== PANELS ===== */
.controls-panel,
.history-panel {
    background: var(--bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    padding: 24px;
}

.panel-section {
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.panel-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.panel-title {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ===== INPUT STYLES ===== */
.input-label {
    display: block;
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.bet-input-group {
    display: flex;
    align-items: center;
    background: var(--bg-tertiary);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

.bet-input-group:focus-within {
    border-color: var(--gold-dark);
}

.currency-symbol {
    padding: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

.bet-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
    padding: 12px 8px;
    outline: none;
    width: 100%;
}

.bet-input::-webkit-outer-spin-button,
.bet-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.bet-buttons {
    display: flex;
    border-left: 1px solid var(--border-color);
}

.bet-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 12px 14px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.bet-btn:hover {
    background: var(--bg-card-hover);
    color: var(--gold);
}

.bet-btn:first-child {
    border-right: 1px solid var(--border-color);
}

/* ===== MINES SELECTOR ===== */
.mines-selector {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 16px;
}

.mines-btn {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.mines-btn:hover {
    background: var(--bg-card-hover);
    border-color: var(--gold-dark);
    color: var(--gold);
}

.mines-btn:active {
    transform: scale(0.95);
}

.mines-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--gold);
    min-width: 50px;
    text-align: center;
}

.mines-range {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--text-muted);
}

.mines-range input[type="range"] {
    flex: 1;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    cursor: pointer;
}

.mines-range input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--gold);
    border-radius: 50%;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.mines-range input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

/* ===== STATS SECTION ===== */
.stats-section {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 16px !important;
    margin-left: -8px;
    margin-right: -8px;
    width: calc(100% + 16px);
}

.stat-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
}

.stat-row:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
}

.stat-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.stat-value.multiplier {
    color: var(--gold);
}

/* ===== PAYOUT SECTION ===== */
.payout-section {
    text-align: center;
}

.current-multiplier,
.potential-win {
    margin-bottom: 16px;
}

.payout-label {
    display: block;
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 6px;
}

.payout-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
}

.payout-value.win-value {
    color: var(--gold);
}

/* ===== ACTION BUTTONS ===== */
.action-section {
    border-bottom: none !important;
}

.action-btn {
    width: 100%;
    padding: 16px 24px;
    border-radius: 12px;
    border: none;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.start-btn {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: var(--bg-primary);
    box-shadow: var(--shadow-gold);
}

.start-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(201, 169, 98, 0.4);
}

.start-btn:active:not(:disabled) {
    transform: translateY(0);
}

.start-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.cashout-btn {
    background: linear-gradient(135deg, var(--green-accent), #257a55);
    color: var(--text-primary);
    box-shadow: 0 4px 16px var(--green-glow);
    animation: pulse-green 2s infinite;
}

.cashout-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px var(--green-glow);
}

@keyframes pulse-green {
    0%, 100% { box-shadow: 0 4px 16px var(--green-glow); }
    50% { box-shadow: 0 4px 24px rgba(45, 148, 105, 0.5); }
}

.btn-icon {
    font-size: 14px;
}

/* ===== GAME GRID ===== */
.grid-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.grid-wrapper {
    position: relative;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.game-grid {
    display: grid;
    grid-template-columns: repeat(var(--grid-size), var(--tile-size));
    grid-template-rows: repeat(var(--grid-size), var(--tile-size));
    gap: var(--tile-gap);
}

.tile {
    width: var(--tile-size);
    height: var(--tile-size);
    background: var(--tile-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.tile::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.05), transparent);
    border-radius: 12px;
}

.tile:hover:not(.revealed):not(.disabled) {
    background: var(--tile-hover);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-light);
}

.tile:active:not(.revealed):not(.disabled) {
    transform: translateY(-1px);
}

.tile.disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

.tile.revealed {
    cursor: default;
    transform: none;
}

.tile.revealed.safe {
    background: var(--tile-revealed-safe);
    border-color: var(--green-accent);
    animation: reveal-safe 0.4s ease;
}

.tile.revealed.safe .tile-icon {
    color: var(--green-light);
    text-shadow: 0 0 10px var(--green-glow);
}

.tile.revealed.mine {
    background: var(--tile-revealed-mine);
    border-color: var(--red);
    animation: reveal-mine 0.5s ease;
}

.tile.revealed.mine .tile-icon {
    color: var(--red-light);
    text-shadow: 0 0 10px var(--red-glow);
}

.tile.show-mine {
    background: var(--tile-revealed-mine);
    border-color: rgba(196, 69, 69, 0.5);
}

.tile.show-mine .tile-icon {
    color: var(--red);
    opacity: 0.7;
}

@keyframes reveal-safe {
    0% { transform: scale(0.8); opacity: 0; }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes reveal-mine {
    0% { transform: scale(0.8) rotate(-10deg); opacity: 0; }
    30% { transform: scale(1.2) rotate(5deg); }
    60% { transform: scale(0.95) rotate(-2deg); }
    100% { transform: scale(1) rotate(0); opacity: 1; }
}

.tile-icon {
    position: relative;
    z-index: 1;
}

/* Grid Overlay */
.grid-overlay {
    position: absolute;
    inset: 0;
    background: rgba(13, 13, 18, 0.9);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

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

.overlay-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 16px;
}

.overlay-text {
    font-size: 16px;
    color: var(--text-secondary);
}

.revealed-counter {
    font-size: 14px;
    color: var(--text-muted);
    text-align: center;
}

/* ===== HISTORY PANEL ===== */
.history-panel {
    max-height: 600px;
    overflow-y: auto;
}

.history-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.history-empty {
    color: var(--text-muted);
    font-size: 14px;
    text-align: center;
    padding: 20px;
}

.history-item {
    background: var(--bg-tertiary);
    border-radius: 10px;
    padding: 14px;
    border-left: 3px solid var(--border-color);
    transition: all var(--transition-fast);
}

.history-item:hover {
    background: var(--bg-card-hover);
}

.history-item.win {
    border-left-color: var(--green-accent);
}

.history-item.loss {
    border-left-color: var(--red);
}

.history-bet {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.history-result {
    font-size: 16px;
    font-weight: 600;
}

.history-item.win .history-result {
    color: var(--green-light);
}

.history-item.loss .history-result {
    color: var(--red-light);
}

.history-details {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 6px;
}

/* ===== MODAL ===== */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(8px);
    animation: modal-fade-in 0.3s ease;
}

@keyframes modal-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 24px;
    padding: 48px;
    text-align: center;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    animation: modal-scale-in 0.4s ease;
    min-width: 320px;
}

.modal-content.win {
    border-color: var(--green-accent);
    box-shadow: 0 0 60px var(--green-glow);
}

.modal-content.loss {
    border-color: var(--red);
    box-shadow: 0 0 60px var(--red-glow);
}

@keyframes modal-scale-in {
    from { transform: scale(0.8); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.modal-icon {
    font-size: 64px;
    margin-bottom: 20px;
    display: block;
}

.modal-title {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
}

.modal-content.win .modal-title {
    color: var(--green-light);
}

.modal-content.loss .modal-title {
    color: var(--red-light);
}

.modal-amount {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 8px;
}

.modal-content.win .modal-amount {
    color: var(--green-light);
}

.modal-content.loss .modal-amount {
    color: var(--red-light);
}

.modal-subtitle {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.modal-btn {
    background: linear-gradient(135deg, var(--gold), var(--gold-dark));
    color: var(--bg-primary);
    border: none;
    padding: 14px 40px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.modal-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
}

/* ===== UTILITIES ===== */
.hidden {
    display: none !important;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) {
    .game-area {
        grid-template-columns: 260px 1fr;
    }
    
    .history-panel {
        display: none;
    }
}

@media (max-width: 900px) {
    .game-area {
        grid-template-columns: 1fr;
    }
    
    .controls-panel {
        order: 2;
    }
    
    .grid-container {
        order: 1;
    }
    
    :root {
        --tile-size: 60px;
        --tile-gap: 6px;
    }
}

@media (max-width: 500px) {
    :root {
        --tile-size: 50px;
        --tile-gap: 5px;
    }
    
    .casino-container {
        padding: 12px;
    }
    
    .header {
        padding: 16px 20px;
    }
    
    .logo-text {
        font-size: 22px;
    }
    
    .grid-wrapper {
        padding: 16px;
    }
}