/* ==========================================================================
   Game Page Specific Styles
   ========================================================================== */

.game-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.game-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--color-border);
}

.game-header .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

.game-header-icon {
    width: 100px;
    height: auto;
    flex-shrink: 0;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.game-header-text {
    flex: 1;
}

.back-link {
    display: inline-flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-fast);
    padding: 0.5rem 0;
}

.back-link:hover {
    color: white;
    transform: translateX(-4px);
}

.game-header h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 0.5rem;
    color: white;
    text-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.game-tagline {
    color: rgba(255, 255, 255, 0.9);
    font-size: clamp(1rem, 2vw, 1.125rem);
}

/* ==========================================================================
   Canvas Container
   ========================================================================== */

.game-canvas-container {
    background: var(--color-bg-dark);
    padding: var(--spacing-lg) var(--spacing-md);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 500px;
}

canvas {
    display: block;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    background: #000;
}

/* Connect Four Canvas - Specific sizing */
#glcanvas {
    width: min(1054px, 90vw);
    height: min(1204px, calc(90vw * 1204 / 1054));
    max-width: 100%;
}

/* Othello Canvas - Specific sizing */
canvas[tabindex] {
    width: min(800px, 90vmin);
    height: min(900px, calc(90vmin * 900 / 800));
    max-width: 90vw;
    max-height: 90vh;
}

/* Responsive canvas adjustments */
@media (min-aspect-ratio: 1054/1204) {
    #glcanvas {
        width: min(1054px, calc(85vh * 1054 / 1204));
        height: min(1204px, 85vh);
    }
}

@media (max-width: 768px) {
    .game-canvas-container {
        padding: var(--spacing-md) var(--spacing-sm);
    }
    
    #glcanvas {
        width: 95vw;
        height: calc(95vw * 1204 / 1054);
    }
    
    canvas[tabindex] {
        width: 95vmin;
        height: calc(95vmin * 900 / 800);
    }
}

/* ==========================================================================
   Game Info Sections
   ========================================================================== */

.game-info {
    max-width: 900px;
    margin: 0 auto;
}

.info-box {
    background: var(--color-bg-medium);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.info-box h3 {
    color: #4a9eff;
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
    font-size: 1.5rem;
}

.info-box p {
    margin: var(--spacing-sm) 0;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

.info-box p:last-child {
    margin-bottom: 0;
}

.info-box strong {
    color: #88c0ff;
    font-weight: 600;
}

.info-box ul {
    margin: var(--spacing-sm) 0;
    padding-left: 1.5rem;
    list-style: none;
}

.info-box ul li {
    margin: var(--spacing-sm) 0;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.info-box ul li::before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.info-box ul li strong {
    display: inline-block;
    margin-right: 0.25rem;
}

.highlight {
    color: #88c0ff;
    font-weight: 600;
    background: rgba(102, 126, 234, 0.1);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
}

/* ==========================================================================
   Loading State
   ========================================================================== */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    margin-top: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: 1.125rem;
}

/* ==========================================================================
   Game Controls (for future features)
   ========================================================================== */

.game-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
    flex-wrap: wrap;
}

.control-btn {
    padding: 0.75rem 1.5rem;
    background: var(--color-bg-light);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.control-btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

/* ==========================================================================
   Responsive Adjustments
   ========================================================================== */

@media (max-width: 768px) {
    .game-header {
        padding: var(--spacing-md) 0;
    }
    
    .game-header-icon {
        width: 70px;
    }
    
    .game-header-container {
        gap: var(--spacing-md);
    }
    
    .info-box {
        padding: var(--spacing-md);
    }
    
    .info-box h3 {
        font-size: 1.25rem;
    }
}

@media (max-width: 480px) {
    .game-canvas-container {
        min-height: 400px;
        padding: var(--spacing-sm);
    }
    
    .info-box ul li {
        padding-left: 1rem;
    }
}