/* Royal Card Slots - Premium Casino Experience */
:root {
    /* Color Palette */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gold-gradient: linear-gradient(135deg, #ffd700 0%, #ffb347 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --danger-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    
    /* Glass Colors */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.8);
    --text-muted: rgba(255, 255, 255, 0.6);
    
    /* Background */
    --bg-primary: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    --bg-dark: linear-gradient(135deg, #2c3e50 0%, #34495e 50%, #2c3e50 100%);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --glass-bg: rgba(0, 0, 0, 0.2);
    --glass-border: rgba(255, 255, 255, 0.1);
    --bg-primary: var(--bg-dark);
    --text-primary: #e2e8f0;
    --text-secondary: rgba(226, 232, 240, 0.8);
    --text-muted: rgba(226, 232, 240, 0.6);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    user-select: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-gradient);
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-content {
    text-align: center;
    color: var(--text-primary);
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid #ffd700;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-bar {
    width: 300px;
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    overflow: hidden;
    margin-top: var(--spacing-lg);
}

.loading-progress {
    height: 100%;
    background: var(--gold-gradient);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 4px;
}

/* PWA Install Banner */
.install-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    padding: var(--spacing-md);
    z-index: 1000;
    transition: transform var(--transition-normal);
}

.install-banner.hidden {
    transform: translateY(-100%);
}

.install-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    max-width: 600px;
    margin: 0 auto;
}

.install-btn, .dismiss-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.install-btn {
    background: var(--gold-gradient);
    color: #000;
    font-weight: 600;
}

.dismiss-btn {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    font-size: 1.2rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Main Game Container */
.game-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.game-container.hidden {
    display: none;
}

/* Header */
.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
}

.title {
    font-size: 1.8rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-right {
    display: flex;
    gap: var(--spacing-sm);
}

.icon-btn {
    width: 48px;
    height: 48px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.icon-btn:active {
    transform: translateY(0);
}

/* Balance Section */
.balance-section {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
}

.balance-display {
    text-align: center;
}

.balance-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.balance-amount {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Courier New', monospace;
}

.stats-display {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.stat {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.stat-value {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Slot Machine */
.slot-machine {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--glass-shadow);
    padding: var(--spacing-xl);
    margin: var(--spacing-lg) 0;
}

.machine-header {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.machine-lights {
    display: flex;
    gap: var(--spacing-md);
}

.light {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transition: all var(--transition-fast);
}

.light.active {
    background: var(--gold-gradient);
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.6);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.1); }
}

.cards-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    perspective: 1000px;
}

.card-slot {
    aspect-ratio: 3/4;
    position: relative;
}

.card {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.4, 0.0, 0.2, 1);
    cursor: pointer;
}

.card.flipping {
    transform: rotateY(180deg);
}

.card-front,
.card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    backface-visibility: hidden;
    border: 2px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.card-front {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    color: var(--text-primary);
}

.card-back {
    background: var(--primary-gradient);
    transform: rotateY(180deg);
    position: relative;
    overflow: hidden;
}

.card-back::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 80%;
    height: 80%;
    background: repeating-linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.1),
        rgba(255, 255, 255, 0.1) 10px,
        transparent 10px,
        transparent 20px
    );
    transform: translate(-50%, -50%);
    border-radius: var(--radius-md);
}

/* Win Display */
.win-display {
    text-align: center;
    margin: var(--spacing-lg) 0;
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-normal);
}

.win-display.show {
    opacity: 1;
    transform: translateY(0);
}

.win-amount {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    font-family: 'Courier New', monospace;
}

.win-amount.win {
    background: var(--success-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.win-amount.loss {
    color: #ff6b6b;
}

.win-type {
    font-size: 1.2rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Betting Section */
.betting-section {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    padding: var(--spacing-xl);
}

.bet-controls {
    margin-bottom: var(--spacing-lg);
}

.bet-buttons {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.bet-btn {
    padding: var(--spacing-md);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.bet-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gold-gradient);
    transition: left var(--transition-fast);
    z-index: -1;
}

.bet-btn:hover::before,
.bet-btn.active::before {
    left: 0;
}

.bet-btn:hover,
.bet-btn.active {
    color: #000;
    border-color: #ffd700;
    transform: translateY(-2px);
}

.bet-input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.bet-input {
    padding: var(--spacing-md);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: all var(--transition-fast);
}

.bet-input:focus {
    border-color: #ffd700;
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.2);
}

.bet-input::placeholder {
    color: var(--text-muted);
}

.bet-hint {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* Auto Spin Section */
.auto-spin-section {
    margin-bottom: var(--spacing-lg);
}

.auto-spin-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.auto-spin-btn,
.stop-auto-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.auto-spin-btn:hover {
    background: var(--success-gradient);
    color: #000;
    transform: translateY(-2px);
}

.stop-auto-btn {
    background: var(--danger-gradient);
    color: #000;
}

.stop-auto-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(250, 112, 154, 0.4);
}

.auto-spin-select {
    padding: var(--spacing-md);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    cursor: pointer;
    outline: none;
}

/* Main Spin Button */
.spin-button {
    width: 100%;
    height: 80px;
    border: none;
    border-radius: var(--radius-lg);
    background: var(--gold-gradient);
    color: #000;
    font-size: 1.5rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.3);
}

.spin-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(255, 215, 0, 0.4);
}

.spin-button:active {
    transform: translateY(-1px);
}

.spin-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.3);
}

.spin-loader {
    width: 24px;
    height: 24px;
    border: 3px solid rgba(0, 0, 0, 0.3);
    border-top: 3px solid #000;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.spin-loader.hidden {
    display: none;
}

/* Game Actions */
.game-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.action-btn {
    padding: var(--spacing-md);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    color: var(--text-primary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.action-btn:hover {
    background: var(--primary-gradient);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
}

.action-btn.danger:hover {
    background: var(--danger-gradient);
    color: #000;
}

/* Message Display */
.message-display {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    font-size: 1.2rem;
    font-weight: 600;
    text-align: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-normal);
}

.message-display.show {
    opacity: 1;
    pointer-events: auto;
}

.message-display.win {
    border-color: #4facfe;
    color: #4facfe;
    box-shadow: 0 0 30px rgba(79, 172, 254, 0.3);
}

.message-display.loss {
    border-color: #ff6b6b;
    color: #ff6b6b;
    box-shadow: 0 0 30px rgba(255, 107, 107, 0.3);
}

/* Tabs Container */
.tabs-container {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    overflow: hidden;
}

.tabs-header {
    display: flex;
    background: rgba(255, 255, 255, 0.05);
    border-bottom: 1px solid var(--glass-border);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.tab-btn.active {
    color: var(--text-primary);
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gold-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-fast);
}

.tab-btn.active::after {
    transform: scaleX(1);
}

.tabs-content {
    padding: var(--spacing-lg);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Game Log */
.game-log {
    max-height: 300px;
    overflow-y: auto;
}

.log-entries {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.log-entry {
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
}

.log-entry:hover {
    background: rgba(255, 255, 255, 0.1);
}

.log-entry.win {
    border-left: 4px solid #4facfe;
}

.log-entry.loss {
    border-left: 4px solid #ff6b6b;
}

.log-time {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.log-result {
    font-weight: 600;
}

.log-amount {
    font-family: 'Courier New', monospace;
    font-weight: 600;
}

.log-amount.win {
    color: #4facfe;
}

.log-amount.loss {
    color: #ff6b6b;
}

/* Payout Table */
.payout-table {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.payout-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.payout-row:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(4px);
}

.payout-combo {
    font-size: 1.2rem;
    font-weight: 600;
}

.payout-mult {
    font-size: 1.1rem;
    font-weight: 700;
    background: var(--gold-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Themes Tab */
.skins-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.skin-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
}

.skin-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.skin-card.active {
    border-color: #ffd700;
    box-shadow: 0 0 20px rgba(255, 215, 0, 0.3);
}

.skin-card.locked {
    opacity: 0.6;
    cursor: not-allowed;
}

.skin-preview {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-md);
    margin: 0 auto var(--spacing-md);
    background: var(--primary-gradient);
}

.skin-preview.royal {
    background: var(--primary-gradient);
}

.skin-preview.neon {
    background: linear-gradient(135deg, #ff00ff 0%, #00ffff 100%);
}

.skin-preview.gold {
    background: var(--gold-gradient);
}

.skin-preview.dark {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
}

.skin-info h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.skin-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    padding: var(--spacing-md);
}

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

.modal-content {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-normal);
}

.modal.show .modal-content {
    transform: scale(1) translateY(0);
}

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

.modal-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.close-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

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

/* Settings Modal */
.setting-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.setting-item:hover {
    background: rgba(255, 255, 255, 0.05);
}

.setting-item span:first-child {
    color: var(--text-primary);
    font-weight: 600;
}

.setting-item input[type="checkbox"] {
    display: none;
}

.toggle {
    width: 50px;
    height: 24px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    position: relative;
    transition: background var(--transition-fast);
}

.toggle::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--text-primary);
    top: 2px;
    left: 2px;
    transition: transform var(--transition-fast);
}

.setting-item input[type="checkbox"]:checked + .toggle {
    background: var(--success-gradient);
}

.setting-item input[type="checkbox"]:checked + .toggle::after {
    transform: translateX(26px);
}

.volume-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.volume-controls label {
    color: var(--text-primary);
    font-weight: 600;
}

.volume-controls input[type="range"] {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: rgba(255, 255, 255, 0.2);
    outline: none;
    cursor: pointer;
}

.volume-controls input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gold-gradient);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.volume-controls input[type="range"]::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gold-gradient);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

/* Statistics Modal */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-lg);
}

.stat-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-fast);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-family: 'Courier New', monospace;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Achievements Modal */
.achievements-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.achievement-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.achievement-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.achievement-item.unlocked {
    border-color: #ffd700;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.2);
}

.achievement-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.achievement-icon.unlocked {
    background: var(--gold-gradient);
    color: #000;
}

.achievement-details {
    flex: 1;
}

.achievement-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.achievement-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.achievement-progress {
    margin-top: var(--spacing-sm);
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
}

.achievement-progress-bar {
    height: 100%;
    background: var(--success-gradient);
    transition: width var(--transition-normal);
}

/* Leaderboard Modal */
.leaderboard-tabs {
    display: flex;
    margin-bottom: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.leaderboard-content {
    min-height: 300px;
}

.leaderboard-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.leaderboard-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.leaderboard-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.leaderboard-item.current-user {
    border-color: #ffd700;
    box-shadow: 0 0 15px rgba(255, 215, 0, 0.2);
}

.leaderboard-rank {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--text-primary);
}

.leaderboard-rank.gold {
    background: var(--gold-gradient);
    color: #000;
}

.leaderboard-rank.silver {
    background: linear-gradient(135deg, #c0c0c0 0%, #e8e8e8 100%);
    color: #000;
}

.leaderboard-rank.bronze {
    background: linear-gradient(135deg, #cd7f32 0%, #ffa500 100%);
    color: #000;
}

.leaderboard-user {
    flex: 1;
}

.leaderboard-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.leaderboard-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.leaderboard-score {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    font-family: 'Courier New', monospace;
}

/* Achievement Notification */
.achievement-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    padding: var(--spacing-lg);
    z-index: 3000;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
}

.achievement-notification.show {
    transform: translateX(0);
}

.achievement-notification.hidden {
    transform: translateX(100%);
}

.achievement-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.achievement-content i {
    font-size: 2rem;
    color: #ffd700;
}

.achievement-title {
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.achievement-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Confetti Animation */
.confetti {
    position: fixed;
    pointer-events: none;
    z-index: 1000;
}

.confetti-piece {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--gold-gradient);
    opacity: 0.8;
    animation: confetti-fall 3s linear forwards;
}

@keyframes confetti-fall {
    0% {
        transform: translateY(-100vh) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.loading {
    text-align: center;
    color: var(--text-secondary);
    padding: var(--spacing-xl);
}

/* Responsive Design */
@media (max-width: 768px) {
    .title {
        font-size: 1.4rem;
    }
    
    .balance-amount {
        font-size: 2rem;
    }
    
    .balance-section {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .stats-display {
        justify-content: center;
    }
    
    .bet-buttons {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cards-container {
        gap: var(--spacing-md);
    }
    
    .card-front,
    .card-back {
        font-size: 3rem;
    }
    
    .auto-spin-controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .game-actions {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .skins-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .modal-content {
        margin: var(--spacing-md);
        width: calc(100% - 2rem);
    }
    
    .achievement-notification {
        right: 10px;
        left: 10px;
        transform: translateY(-100%);
    }
    
    .achievement-notification.show {
        transform: translateY(0);
    }
    
    .achievement-notification.hidden {
        transform: translateY(-100%);
    }
}

@media (max-width: 480px) {
    .game-container {
        padding: var(--spacing-sm);
    }
    
    .game-header {
        padding: var(--spacing-md);
    }
    
    .title {
        font-size: 1.2rem;
    }
    
    .header-right {
        gap: var(--spacing-xs);
    }
    
    .icon-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .balance-amount {
        font-size: 1.5rem;
    }
    
    .card-front,
    .card-back {
        font-size: 2.5rem;
    }
    
    .bet-buttons {
        grid-template-columns: 1fr;
    }
    
    .spin-button {
        height: 60px;
        font-size: 1.2rem;
    }
    
    .game-actions {
        grid-template-columns: 1fr;
    }
    
    .tabs-header {
        flex-direction: column;
    }
    
    .tab-btn {
        text-align: center;
    }
    
    .skins-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .payout-row {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

/* High DPI Displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .card-front,
    .card-back {
        border-width: 1px;
    }
    
    .loading-spinner {
        border-width: 2px;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .card {
        transition: none;
    }
    
    .loading-spinner {
        animation: none;
        border: 4px solid #ffd700;
    }
}

/* Print Styles */
@media print {
    .game-container {
        background: white;
        color: black;
    }
    
    .loading-screen,
    .install-banner,
    .achievement-notification,
    .modal {
        display: none !important;
    }
    
    .game-header,
    .betting-section,
    .game-actions {
        display: none;
    }
    
    .slot-machine {
        page-break-inside: avoid;
    }
}