/* Custom CSS for Brain Test Game Website - GitHub Style */

/* GitHub-inspired color variables */
:root {
    --github-bg: #ffffff;
    --github-canvas: #f6f8fa;
    --github-border: #d1d9e0;
    --github-text: #24292f;
    --github-muted: #656d76;
    --github-accent: #0969da;
    --github-success: #2da44e;
    --github-danger: #cf222e;
    --github-warning: #fb8500;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Animation utilities */
.animate-fadeInUp {
    animation: fadeInUp 0.4s ease-out;
}

.animate-slideIn {
    animation: slideIn 0.3s ease-out;
}

/* Custom scrollbar - GitHub style */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--github-canvas);
}

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

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

/* Hero section - clean GitHub style */
.hero-bg {
    background: var(--github-bg);
    border-bottom: 1px solid var(--github-border);
}

/* Level jump input styling */
.level-jump-input:focus {
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.12);
    border-color: var(--github-accent);
    outline: none;
}

/* Level cards - GitHub card style */
.level-card {
    transition: all 0.2s ease;
    border: 1px solid var(--github-border);
    background: var(--github-bg);
}

.level-card:hover {
    border-color: var(--github-accent);
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(140, 149, 159, 0.2);
}

.level-card-image {
    aspect-ratio: 2/3;
    position: relative;
    overflow: hidden;
    background-color: var(--github-canvas);
}

/* Level range tabs - GitHub button style */
.level-range-tab {
    transition: all 0.2s ease;
    border: 1px solid var(--github-border);
    background: var(--github-bg);
    color: var(--github-text);
}

.level-range-tab:hover:not(.active) {
    background-color: var(--github-canvas);
    border-color: var(--github-accent);
}

.level-range-tab.active {
    background: var(--github-text);
    color: white;
    border-color: var(--github-text);
}

/* FAQ Accordion - GitHub style */
.faq-item {
    border: 1px solid var(--github-border);
    background: var(--github-canvas);
    border-radius: 6px;
}

.faq-question {
    color: var(--github-text);
    background: transparent;
}

.faq-question:hover {
    color: var(--github-accent);
    background: var(--github-bg);
}

.faq-answer {
    color: var(--github-muted);
    background: var(--github-bg);
    border-top: 1px solid var(--github-border);
}

/* Navigation buttons */
.nav-button {
    background: var(--github-bg);
    border: 1px solid var(--github-border);
    color: var(--github-text);
    transition: all 0.2s ease;
}

.nav-button:hover {
    background: var(--github-canvas);
    border-color: var(--github-accent);
}

/* Content cards */
.content-card {
    background: var(--github-bg);
    border: 1px solid var(--github-border);
    border-radius: 6px;
}

/* Button variations - GitHub style */
.btn-primary {
    background: var(--github-text);
    color: white;
    border: 1px solid var(--github-text);
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background: rgba(36, 41, 47, 0.9);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--github-bg);
    color: var(--github-text);
    border: 1px solid var(--github-border);
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-secondary:hover {
    background: var(--github-canvas);
    border-color: var(--github-accent);
    transform: translateY(-1px);
}

/* Tab styling */
.tab-button {
    transition: all 0.2s ease;
    border-radius: 6px;
}

.tab-button:hover:not(.active) {
    background-color: var(--github-canvas);
}

.tab-button.active {
    background-color: var(--github-text);
    color: white;
}

/* Form inputs - GitHub style */
input[type="text"],
input[type="number"],
input[type="email"],
textarea {
    border: 1px solid var(--github-border);
    border-radius: 6px;
    background: var(--github-bg);
    color: var(--github-text);
    transition: all 0.2s ease;
}

input[type="text"]:focus,
input[type="number"]:focus,
input[type="email"]:focus,
textarea:focus {
    border-color: var(--github-accent);
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.12);
    outline: none;
}

/* Badge styles */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-success {
    background: var(--github-success);
    color: white;
}

.badge-danger {
    background: var(--github-danger);
    color: white;
}

.badge-warning {
    background: var(--github-warning);
    color: white;
}

.badge-info {
    background: var(--github-accent);
    color: white;
}

/* Text clamp utility */
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .level-card {
        border-radius: 6px;
    }
    
    .level-range-tab {
        font-size: 0.875rem;
        padding: 0.5rem 0.75rem;
    }
    
    .btn-primary,
    .btn-secondary {
        font-size: 0.875rem;
        padding: 0.5rem 1rem;
    }
}

/* GitHub-style focus indicators */
.focus\:ring-2:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
    box-shadow: 0 0 0 3px rgba(9, 105, 218, 0.12);
}

/* GitHub-style tooltips */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    background-color: var(--github-text);
    color: white;
    text-align: center;
    border-radius: 6px;
    padding: 0.5rem;
    position: absolute;
    z-index: 1000;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.2s;
    font-size: 0.75rem;
    white-space: nowrap;
}

.tooltip .tooltiptext::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: var(--github-text) transparent transparent transparent;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* Loading states */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.skeleton {
    background: linear-gradient(90deg, var(--github-canvas) 25%, transparent 50%, var(--github-canvas) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        background-position: 200% 0;
    }
    100% {
        background-position: -200% 0;
    }
}

/* High contrast support */
@media (prefers-contrast: high) {
    :root {
        --github-border: #000000;
        --github-muted: #000000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Print styles */
@media print {
    .no-print {
        display: none !important;
    }
    
    * {
        background: white !important;
        color: black !important;
        box-shadow: none !important;
    }
}

/* Dark mode variables (for future use) */
@media (prefers-color-scheme: dark) {
    :root {
        --github-bg: #0d1117;
        --github-canvas: #161b22;
        --github-border: #30363d;
        --github-text: #f0f6fc;
        --github-muted: #8b949e;
        --github-accent: #58a6ff;
    }
}

/* Utility classes */
.aspect-video {
    aspect-ratio: 16 / 9;
}

.aspect-square {
    aspect-ratio: 1 / 1;
}

.backdrop-blur {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* Browser compatibility */
@supports not (aspect-ratio: 1) {
    .aspect-video {
        position: relative;
        width: 100%;
        height: 0;
        padding-bottom: 56.25%;
    }
    
    .aspect-video > * {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }
}