/* 
 * Game Library - Global Styles
 * Shared styles for all games in the library
 */

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

:root {
    /* Color scheme */
    --primary-bg: #0a0e27;
    --secondary-bg: #1a1f3a;
    --tertiary-bg: #2d3561;
    --primary-color: #4a90e2;
    --secondary-color: #357abd;
    --accent-color: #ffcc00;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --player-x-color: #4a90e2;
    --player-o-color: #e74c3c;
    --win-color: #2ecc71;
    --loss-color: #e74c3c;
    --draw-color: #f39c12;
    
    /* Spacing */
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
    --spacing-xxl: 40px;
    
    /* Border radius */
    --radius-sm: 5px;
    --radius-md: 8px;
    --radius-lg: 10px;
    --radius-xl: 15px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
    color: var(--text-primary);
    padding: var(--spacing-sm);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
}

/* Accessibility - Skip link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Container */
.container {
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--tertiary-bg) 100%);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    border: 2px solid var(--primary-color);
    text-align: center;
}

h1 {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.subtitle {
    font-size: clamp(0.9rem, 3vw, 1.1rem);
    color: var(--text-secondary);
}

/* Buttons */
button {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 30px;
    font-size: 1.1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-normal);
    font-family: inherit;
}

button:hover,
button:focus {
    background: var(--secondary-color);
    outline: 3px solid var(--accent-color);
    outline-offset: 2px;
    transform: translateY(-2px);
}

button:active {
    transform: translateY(0);
}

button.secondary {
    background: var(--tertiary-bg);
}

button.secondary:hover,
button.secondary:focus {
    background: #3d4571;
}

/* Footer */
footer {
    text-align: center;
    margin-top: auto;
    padding: var(--spacing-lg);
    color: var(--text-secondary);
    font-size: clamp(0.8rem, 2.5vw, 0.9rem);
}

/* Responsive design */
@media (max-width: 600px) {
    body {
        padding: var(--spacing-xs);
    }

    header {
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }
}

/* High contrast mode */
@media (prefers-contrast: high) {
    body {
        background: #000;
    }

    button,
    header {
        border-width: 3px;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}