/* ===== CSS VARIABLES ===== */
:root {
    /* Color Palette */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #10b981;
    --accent: #f59e0b;
    --danger: #ef4444;
    --warning: #f97316;
    
    /* Background Colors */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-card: rgba(26, 26, 26, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.05);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --text-accent: #6366f1;
    
    /* Border Colors */
    --border-primary: rgba(255, 255, 255, 0.1);
    --border-secondary: rgba(255, 255, 255, 0.05);
    --border-accent: rgba(99, 102, 241, 0.3);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-secondary: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --gradient-danger: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    --gradient-bg: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 50%, #0a0a0a 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gradient-bg);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== NAVIGATION ===== */
.header {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.95) 0%, rgba(20, 20, 30, 0.95) 100%);
    backdrop-filter: blur(25px);
    border-bottom: 1px solid rgba(102, 126, 234, 0.2);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-brand i {
    font-size: 1.75rem;
    color: var(--primary);
}

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

.network-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-glass);
    border: 1px solid var(--border-accent);
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 500;
}

.network-badge i {
    color: var(--secondary);
    font-size: 0.5rem;
}

.wallet-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.wallet-status.connected {
    color: var(--secondary);
}

/* ===== MAIN CONTAINER ===== */
.main-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl);
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--spacing-xl);
    min-height: calc(100vh - 80px);
}

/* ===== CARDS ===== */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.card:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-xl);
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: var(--bg-glass);
    border-bottom: 1px solid var(--border-secondary);
}

.card-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.card-header i {
    color: var(--primary);
    font-size: 1.25rem;
}

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

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: var(--transition-normal);
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.4);
}

.btn-success {
    background: var(--gradient-secondary);
    color: white;
}

.btn-success:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.btn-warning {
    background: var(--gradient-accent);
    color: white;
}

.btn-warning:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.3);
}

.btn-danger {
    background: var(--gradient-danger);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.75rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* ===== INPUT STYLES ===== */
.input-with-icon {
    position: relative;
    display: flex;
    align-items: center;
}

.input-with-icon i {
    position: absolute;
    left: var(--spacing-sm);
    color: var(--text-muted);
    z-index: 1;
}

.input-with-icon input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-sm) var(--spacing-sm) 2.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.input-with-icon input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

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

/* ===== WALLET SECTION ===== */
.wallet-info {
    margin-top: var(--spacing-lg);
}

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-secondary);
}

.info-row:last-child {
    border-bottom: none;
}

.label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.address {
    font-family: 'Monaco', 'Menlo', monospace;
    color: var(--text-accent);
    font-size: 0.75rem;
    background: var(--bg-tertiary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.balance {
    color: var(--secondary);
    font-weight: 600;
    font-size: 1.125rem;
}

/* ===== MATCHMAKING SECTION ===== */
.stake-input-group {
    margin-bottom: var(--spacing-lg);
}

.stake-input-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.status-hint {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--bg-glass);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-size: 0.75rem;
}

.status-hint i {
    color: var(--accent);
}

/* ===== STAKING SECTION ===== */
.match-info {
    margin-bottom: var(--spacing-lg);
}

.info-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-secondary);
}

.info-item:last-child {
    border-bottom: none;
}

.match-id {
    font-family: 'Monaco', 'Menlo', monospace;
    color: var(--text-accent);
    font-size: 0.75rem;
    background: var(--bg-tertiary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.amount {
    color: var(--secondary);
    font-weight: 600;
}

.status {
    color: var(--accent);
    font-weight: 500;
}

.action-buttons {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

/* ===== GAME SECTION ===== */
.game-info {
    margin-bottom: var(--spacing-lg);
}

.player-symbol {
    font-weight: 700;
    font-size: 1.25rem;
}

.player-symbol.x {
    color: var(--primary);
}

.player-symbol.o {
    color: var(--secondary);
}

.turn-indicator {
    color: var(--accent);
    font-weight: 600;
}

.game-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    max-width: 300px;
    margin: 0 auto;
}

.board-cell {
    aspect-ratio: 1;
    background: var(--bg-tertiary);
    border: 2px solid var(--border-primary);
    border-radius: var(--radius-lg);
    font-size: 2rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.board-cell:hover {
    border-color: var(--primary);
    background: var(--bg-glass);
    transform: scale(1.05);
}

.board-cell.x {
    color: var(--primary);
    border-color: var(--primary);
}

.board-cell.o {
    color: var(--secondary);
    border-color: var(--secondary);
}

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

/* ===== LEADERBOARD ===== */
.leaderboard-tabs {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
    background: var(--bg-tertiary);
    padding: var(--spacing-xs);
    border-radius: var(--radius-lg);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.tab-btn.active {
    background: var(--gradient-primary);
    color: white;
}

.tab-btn:hover:not(.active) {
    background: var(--bg-glass);
    color: var(--text-primary);
}

.leaderboard-list {
    max-height: 300px;
    overflow-y: auto;
}

.leaderboard-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
    cursor: pointer;
}

.leaderboard-item:hover {
    background: var(--bg-glass);
}

.leaderboard-item.rank-1 {
    background: linear-gradient(135deg, rgba(245, 215, 110, 0.1) 0%, rgba(245, 215, 110, 0.05) 100%);
    border: 1px solid rgba(245, 215, 110, 0.2);
}

.leaderboard-item.rank-2 {
    background: linear-gradient(135deg, rgba(192, 192, 192, 0.1) 0%, rgba(192, 192, 192, 0.05) 100%);
    border: 1px solid rgba(192, 192, 192, 0.2);
}

.leaderboard-item.rank-3 {
    background: linear-gradient(135deg, rgba(205, 127, 50, 0.1) 0%, rgba(205, 127, 50, 0.05) 100%);
    border: 1px solid rgba(205, 127, 50, 0.2);
}

.rank-number {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 600;
}

.rank-1 .rank-number {
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    color: #000;
}

.rank-2 .rank-number {
    background: linear-gradient(135deg, #c0c0c0 0%, #e5e5e5 100%);
    color: #000;
}

.rank-3 .rank-number {
    background: linear-gradient(135deg, #cd7f32 0%, #daa520 100%);
    color: white;
}

.player-info {
    flex: 1;
}

.player-name {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.875rem;
}

.player-stats {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.player-score {
    font-weight: 600;
    color: var(--secondary);
    font-size: 0.875rem;
}

.loading-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xl);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* ===== STATUS LOG ===== */
#logBox {
    width: 100%;
    min-height: 200px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    padding: var(--spacing-md);
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.75rem;
    line-height: 1.5;
    resize: vertical;
    outline: none;
}

#logBox:focus {
    border-color: var(--primary);
}

/* ===== STATS GRID ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

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

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== LOADING OVERLAY ===== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

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

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-primary);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

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

/* ===== TOAST NOTIFICATIONS ===== */
.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease-out;
    max-width: 300px;
}

.toast.success {
    background: var(--gradient-secondary);
}

.toast.error {
    background: var(--gradient-danger);
}

.toast.warning {
    background: var(--gradient-accent);
}

.toast.info {
    background: var(--gradient-primary);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== TOKEN CONVERSION STYLES ===== */
.token-conversion-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    backdrop-filter: blur(10px);
}

.conversion-info {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-glass);
    border-radius: 8px;
    border: 1px solid var(--border-secondary);
}

.rate-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.rate-display .label {
    color: var(--text-secondary);
    font-weight: 500;
}

.rate-display .rate {
    color: var(--secondary);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: var(--spacing-xs);
}

.conversion-section {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--bg-glass);
    border-radius: 12px;
    border: 1px solid var(--border-secondary);
}

.wallet-connect-section {
    text-align: center;
    padding: 20px;
}

.wallet-hint {
    margin-top: 12px;
    color: #a0aec0;
    font-size: 14px;
    opacity: 0.8;
}

.wallet-info {
    margin-top: 0;
    padding: 0;
}

.wallet-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 16px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(102, 126, 234, 0.3);
}

.wallet-status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #38ef7d;
    font-weight: 600;
}

.wallet-status-indicator i {
    font-size: 18px;
}

.wallet-details {
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.conversion-section h3 {
    color: var(--text-primary);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.conversion-section h3 i {
    color: var(--primary);
}

.conversion-section .hint {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
}

.input-group {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
}

.input-group .input-with-icon {
    flex: 1;
}

.conversion-preview {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 8px;
    text-align: center;
}

.preview-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.preview-text strong {
    color: var(--secondary);
    font-weight: 600;
}

.refresh-section {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-secondary);
}

.btn.btn-outline {
    background: transparent;
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.btn.btn-outline:hover {
    background: var(--bg-glass);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-1px);
}

.btn.btn-secondary {
    background: var(--gradient-secondary);
    border: none;
    color: white;
}

.btn.btn-secondary:hover {
    background: linear-gradient(135deg, #059669 0%, #047857 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1200px) {
    .main-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .right-panel {
        order: -1;
    }
}

@media (max-width: 768px) {
    .main-container {
        padding: var(--spacing-md);
    }
    
    .nav-container {
        padding: 0 var(--spacing-md);
    }
    
    .nav-brand span {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .game-board {
        max-width: 250px;
    }
    
    .board-cell {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .card-content {
        padding: var(--spacing-md);
    }
    
    .card-header {
        padding: var(--spacing-md);
    }
    
    .game-board {
        max-width: 200px;
    }
    
    .board-cell {
        font-size: 1.25rem;
    }
}

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-primary);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-accent);
}

/* ===== SELECTION STYLING ===== */
::selection {
    background: var(--primary);
    color: white;
}

::-moz-selection {
    background: var(--primary);
    color: white;
}