/* Clean Academic Theme - adapted from SparsityAndCoD docs template */

:root {
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #0f3460;
    --color-highlight: #e94560;
    --color-muted: #95a5a6;
    --color-bg: #fafafa;
    --color-card: #ffffff;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-highlight);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--color-accent);
}

.text-highlight,
.highlight {
    color: var(--color-highlight);
}

.card {
    background: var(--color-card);
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

.btn-primary,
.btn-secondary {
    padding: 10px 20px;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.btn-primary:hover {
    background: var(--color-highlight);
    color: white;
    transform: translateY(-1px);
}

.btn-secondary {
    background: white;
    color: var(--color-primary);
    border: 1px solid #ddd;
}

.btn-secondary:hover {
    border-color: var(--color-highlight);
    color: var(--color-highlight);
}

.nav-link {
    color: #666;
    transition: color 0.2s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-highlight);
}

.insight-box {
    background: #f8f9fa;
    border-left: 4px solid var(--color-highlight);
    padding: 1.5rem;
    border-radius: 0 8px 8px 0;
}

.step-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    border-left: 3px solid var(--color-accent);
    transition: box-shadow 0.2s ease;
}

.step-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.result-badge {
    background: linear-gradient(135deg, var(--color-highlight), #ff6b6b);
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 4px 12px rgba(233, 69, 96, 0.3);
}

.copy-btn {
    background: #f0f0f0;
    border: none;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.2s;
}

.copy-btn:hover {
    background: #e0e0e0;
}

.copy-btn.copied {
    background: #27ae60;
    color: white;
}

.figure-caption {
    text-align: center;
    font-size: 0.875rem;
    color: #666;
    margin-top: 0.5rem;
}

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

code {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    font-size: 0.875em;
}

pre {
    white-space: pre;
    line-height: 1.5;
}

sup {
    font-size: 0.65em;
    color: var(--color-highlight);
    font-weight: 600;
}

footer {
    background-color: var(--color-primary);
}

footer a {
    color: #95a5a6;
    transition: color 0.2s ease;
}

footer a:hover {
    color: white;
}

::selection {
    background-color: rgba(233, 69, 96, 0.2);
    color: var(--color-primary);
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-highlight);
    outline-offset: 2px;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a1a1a1;
}

@media (max-width: 768px) {
    .insight-box {
        padding: 1rem;
    }

    .step-card {
        padding: 1rem;
    }

    .result-badge {
        padding: 0.75rem 1.5rem;
    }
}