/**
 * Library Landing Page Styles
 * Content hub for guides, research, and case studies
 *
 * Uses design system from marketing-template.css:
 * --color-canvas: #FBF8F5
 * --color-primary: #2D2A3D
 * --color-accent: #D9A520
 * --color-accent-soft: rgba(217, 165, 32, 0.08)
 * --color-surface: #FFFFFF
 * --color-text-secondary: #5A5467
 * --color-text-muted: #9690A3
 * --color-border: #E8E4EC
 * --font-serif: 'Libre Baskerville'
 * --font-sans: 'Inter'
 */

/* ==========================================================================
   Hero Section
   ========================================================================== */
.library-hero {
    text-align: center;
    padding: 80px 24px 48px;
    max-width: 800px;
    margin: 0 auto;
}

.library-label {
    display: inline-block;
    background: var(--color-accent-soft);
    color: var(--color-accent);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.library-hero h1 {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: 20px;
}

.library-hero h1 em {
    font-style: italic;
    color: var(--color-accent);
}

.library-hero .hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 600px;
    margin: 0 auto 40px;
}

.library-hero-image {
    max-width: 900px;
    margin: 0 auto 40px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 40px rgba(45, 42, 61, 0.15);
}

.library-hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* ==========================================================================
   Category Filter Tabs
   ========================================================================== */
.category-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.category-tab {
    padding: 10px 20px;
    border: none;
    border-radius: 24px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--color-accent-soft);
    color: var(--color-primary);
}

.category-tab:hover {
    background: rgba(217, 165, 32, 0.15);
}

.category-tab.active {
    background: var(--color-accent);
    color: white;
}

/* ==========================================================================
   Content Sections
   ========================================================================== */
.library-section {
    padding: 48px 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.library-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 16px;
}

.library-section-header h2 {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    margin: 0;
}

.view-all-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--color-accent);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: color 0.2s;
}

.view-all-link:hover {
    color: #C4941D;
}

.view-all-link svg {
    transition: transform 0.2s ease;
}

.view-all-link:hover svg {
    transform: translateX(4px);
}

/* ==========================================================================
   Featured Article Card
   ========================================================================== */
.featured-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    background: var(--color-surface);
    border-radius: 16px;
    padding: 40px;
    border: 2px solid rgba(217, 165, 32, 0.4);
    box-shadow: 0 4px 24px rgba(217, 165, 32, 0.1);
    margin-bottom: 48px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.featured-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(217, 165, 32, 0.15);
}

.featured-card-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.featured-card-label {
    display: inline-block;
    background: var(--color-accent);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 16px;
    width: fit-content;
}

.featured-card h3 {
    font-family: var(--font-serif);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-primary);
    margin-bottom: 16px;
}

.featured-card h3 em {
    font-style: italic;
    color: var(--color-accent);
}

.featured-card p {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.featured-card-image {
    background: linear-gradient(135deg, var(--color-accent-soft), rgba(217, 165, 32, 0.04));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 280px;
    overflow: hidden;
}

.featured-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
}

.featured-card-image .placeholder-icon {
    color: var(--color-text-secondary);
    opacity: 0.4;
}

/* ==========================================================================
   Guide Cards Grid
   ========================================================================== */
.guides-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.guide-card {
    background: var(--color-surface);
    border-radius: 12px;
    padding: 28px;
    border: 1px solid var(--color-border);
    transition: all 0.2s ease;
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.guide-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: 0 8px 24px rgba(45, 42, 61, 0.12);
}

.guide-card-tag {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 12px;
}

.guide-card h3 {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 700;
    line-height: 1.4;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.guide-card p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
    flex-grow: 1;
}

.guide-card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 12px;
    color: var(--color-text-muted);
}

.guide-card-meta .read-time {
    display: flex;
    align-items: center;
    gap: 4px;
}

.guide-card-meta .badge {
    background: rgba(76, 175, 80, 0.12);
    color: #2e7d32;
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
}

/* ==========================================================================
   Research Cards (Horizontal)
   ========================================================================== */
.research-grid {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.research-card {
    background: var(--color-surface);
    border-radius: 12px;
    padding: 24px 28px;
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 24px;
    text-decoration: none;
    transition: all 0.2s ease;
}

.research-card:hover {
    transform: translateY(-2px);
    border-color: var(--color-accent);
    box-shadow: 0 8px 24px rgba(45, 42, 61, 0.12);
}

.research-card.disabled {
    opacity: 0.6;
    pointer-events: none;
}

.research-card-tag {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 10px;
    white-space: nowrap;
}

.research-card-tag.whitepaper {
    background: rgba(100, 149, 237, 0.15);
    color: #4169e1;
}

.research-card-tag.technical {
    background: rgba(100, 149, 237, 0.15);
    color: #4169e1;
}

.research-card-tag.methodology {
    background: rgba(90, 84, 103, 0.12);
    color: var(--color-text-secondary);
}

.research-card-content {
    flex: 1;
}

.research-card h3 {
    font-family: var(--font-serif);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.research-card .subtitle {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.research-card-badge {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 10px;
    border-radius: 10px;
    background: rgba(76, 175, 80, 0.12);
    color: #2e7d32;
}

.research-card-badge.coming-soon {
    background: rgba(90, 84, 103, 0.1);
    color: var(--color-text-secondary);
}

.research-tech-link {
    margin-top: 24px;
    text-align: center;
}

.research-tech-link a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 15px;
    padding: 12px 24px;
    border: 2px solid var(--color-accent);
    border-radius: 8px;
    transition: all 0.2s;
}

.research-tech-link a:hover {
    background: var(--color-accent);
    color: white;
}

.research-tech-link a svg {
    transition: transform 0.2s;
}

.research-tech-link a:hover svg {
    transform: translateX(4px);
}

/* ==========================================================================
   Stories Cards Grid
   ========================================================================== */
.stories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.story-card {
    background: var(--color-surface);
    border-radius: 12px;
    padding: 28px;
    border: 1px solid var(--color-border);
    transition: all 0.2s ease;
    text-decoration: none;
    display: flex;
    flex-direction: column;
}

.story-card:hover {
    transform: translateY(-4px);
    border-color: var(--color-accent);
    box-shadow: 0 8px 24px rgba(45, 42, 61, 0.12);
}

.story-card.disabled {
    opacity: 0.6;
    pointer-events: none;
}

.story-card-tag {
    display: inline-block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 12px;
    width: fit-content;
}

.story-card-tag.case-study {
    color: #2e7d32;
}

.story-card-tag.coming-soon {
    color: var(--color-text-secondary);
}

.story-card h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.4;
    color: var(--color-primary);
    margin-bottom: 12px;
}

.story-card p {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ==========================================================================
   CTA Button
   ========================================================================== */
.btn-library {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--color-accent);
    color: white;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.btn-library:hover {
    background: #C4941D;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(217, 165, 32, 0.3);
}

.btn-library svg {
    transition: transform 0.2s;
}

.btn-library:hover svg {
    transform: translateX(4px);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 1024px) {
    .guides-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .library-hero {
        padding: 60px 20px 40px;
    }

    .library-section {
        padding: 40px 20px;
    }

    .featured-card {
        grid-template-columns: 1fr;
        padding: 28px;
        gap: 24px;
    }

    .featured-card-image {
        min-height: 200px;
        order: -1;
    }

    .guides-grid {
        grid-template-columns: 1fr;
    }

    .stories-grid {
        grid-template-columns: 1fr;
    }

    .research-card {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .library-section-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .library-hero h1 {
        font-size: 1.75rem;
    }

    .category-tabs {
        gap: 6px;
    }

    .category-tab {
        padding: 8px 16px;
        font-size: 13px;
    }

    .guide-card,
    .story-card {
        padding: 20px;
    }
}