/* Layout Styles */

/* Page Header (in content area) */
.page-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xs);
}

.page-header-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-lg);
}

.page-logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
    flex-shrink: 0;
}

.page-title-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.page-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin: 0;
    color: white;
}

.page-subtitle {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin: 0;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.4;
}

/* Footer */
.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) var(--spacing-2xl);
    margin-left: 250px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--color-primary);
}

/* Sections */
.content-section {
    margin-bottom: var(--spacing-3xl);
}

.section-header {
    margin-bottom: var(--spacing-xs);
}

.section-header h2 {
    margin-bottom: 0;
    font-size: var(--font-size-2xl);
}

.section-description {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
}

/* About Section Content */
.about-content {
    max-width: 900px;
}

.about-subsection h1 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
    color: var(--color-text);
}

.about-subsection h2 {
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.about-subsection h3 {
    font-size: var(--font-size-lg);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.about-subsection p {
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-relaxed);
}

.about-subsection ul,
.about-subsection ol {
    margin-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.about-subsection li {
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-relaxed);
}

.about-subsection code {
    background-color: var(--color-bg-tertiary);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-sm);
    font-size: 0.875em;
}

.about-subsection pre {
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: var(--spacing-md);
}

.about-subsection pre code {
    background: none;
    padding: 0;
}

.about-subsection a {
    color: var(--color-primary);
    text-decoration: none;
}

.about-subsection a:hover {
    text-decoration: underline;
}

/* Card-style sections for Code and Citation pages */
#about-code,
#about-citation {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

#about-code h2,
#about-citation h2 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    margin: 0;
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

/* Only code blocks get the card/box styling */
#about-code pre,
#about-citation pre {
    background-color: var(--color-bg-secondary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-md) 0;
    overflow-x: auto;
}

#about-code pre code,
#about-citation pre code {
    background: none;
    padding: 0;
}

/* Normal text and lists - no box styling */
#about-code p,
#about-citation p,
#about-code ul,
#about-citation ul {
    margin: var(--spacing-md) 0;
    line-height: var(--line-height-relaxed);
}

#about-code hr,
#about-citation hr {
    border: none;
    height: 0;
    margin: var(--spacing-lg) 0;
}

#about-code strong,
#about-citation strong {
    color: var(--color-text);
    font-weight: var(--font-weight-semibold);
}

#about-code a,
#about-citation a {
    color: var(--color-primary);
    text-decoration: none;
}

#about-code a:hover,
#about-citation a:hover {
    text-decoration: underline;
}

/* All About section titles use consistent purple gradient */
/* No special coloring for any subsections */

/* Indent ALL content under h2 headings in About sections */
#about-code > *:not(h2),
#about-citation > *:not(h2) {
    margin-left: var(--spacing-xl);
}

/* Keep h2 headings at the left edge */
#about-code > h2,
#about-citation > h2 {
    margin-left: 0;
}

/* h3 headings also get indented since they're children */
#about-code h3,
#about-citation h3 {
    font-size: var(--font-size-base);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

/* Leaderboard Container */
.leaderboard-container {
    background-color: var(--color-bg);
}

.leaderboard-content {
    animation: fadeIn 0.3s ease-in-out;
}

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

.leaderboard-info h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
    font-size: var(--font-size-lg);
}

.leaderboard-info p {
    color: var(--color-text-secondary);
    margin-bottom: 0;
    font-size: var(--font-size-base);
}

/* No Results Message */
.no-results {
    text-align: center;
    padding: var(--spacing-3xl);
    color: var(--color-text-muted);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .page-header {
        padding: var(--spacing-md);
    }

    .page-title {
        font-size: var(--font-size-lg);
    }

    .page-subtitle {
        font-size: var(--font-size-sm);
    }

    .footer {
        margin-left: 0;
        padding: var(--spacing-lg);
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .section-header h2 {
        font-size: var(--font-size-xl);
    }
}