/* Learning Section - Contemplative Design System */
:root {
    /* Contemplative Color Palette */
    --learning-bg: #f8f7f5;
    --learning-text: #2a2a2a;
    --learning-text-muted: #5a5a5a;
    --learning-accent: #5b7c99;
    --learning-accent-dark: #3d5a73;
    --learning-accent-light: #7a9ab8;
    --learning-secondary: #8b7355;
    --learning-tertiary: #6b5d8f;
    --learning-border: #e0ddd9;
    --learning-card-bg: #ffffff;
    --learning-hero-gradient-start: rgba(91, 124, 153, 0.08);
    --learning-hero-gradient-mid: rgba(107, 93, 143, 0.06);
    --learning-hero-gradient-end: rgba(139, 115, 85, 0.04);

    /* Typography */
    --font-serif: 'Crimson Text', Georgia, serif;
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --max-width: 780px;
}

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

html {
    font-size: 16px;
    line-height: 1.6;
}

body {
    font-family: var(--font-sans);
    background: var(--learning-bg);
    color: var(--learning-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Navigation */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--learning-border);
    padding: 1rem 0;
    background: rgba(248, 247, 245, 0.95);
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.nav-logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--learning-accent);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.nav-links a {
    color: var(--learning-text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--learning-accent);
}

/* Hero Section */
.hero-wrapper {
    background: linear-gradient(135deg,
        var(--learning-hero-gradient-start) 0%,
        var(--learning-hero-gradient-mid) 50%,
        var(--learning-hero-gradient-end) 100%);
    border-bottom: 1px solid var(--learning-border);
    position: relative;
    overflow: hidden;
}

.hero-wrapper::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(91, 124, 153, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 4rem 1.5rem;
    position: relative;
    z-index: 1;
    text-align: center;
}

.hero h1 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    color: var(--learning-text);
}

.hero-verse {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-style: italic;
    color: var(--learning-accent-dark);
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.hero-reference {
    font-size: 0.95rem;
    color: var(--learning-text-muted);
    font-weight: 500;
}

.hero-tagline {
    font-size: 1.1rem;
    color: var(--learning-text-muted);
    margin-top: 1.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

/* Main Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 3rem 1.5rem;
    flex: 1;
}

/* Section Cards Grid (for landing page) */
.section-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.section-card {
    background: var(--learning-card-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--learning-border);
    text-decoration: none;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.section-card:hover {
    border-color: var(--learning-accent);
    box-shadow: 0 8px 24px rgba(91, 124, 153, 0.12);
    transform: translateY(-2px);
}

.section-card-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    opacity: 0.8;
}

.section-card h2 {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--learning-accent-dark);
    margin-bottom: 0.75rem;
}

.section-card p {
    font-size: 0.95rem;
    color: var(--learning-text-muted);
    line-height: 1.6;
    margin-bottom: 0;
}

/* Page Header */
.page-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--learning-border);
}

.page-header h1 {
    font-family: var(--font-serif);
    font-size: 2.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--learning-text);
}

.page-header .verse {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    font-style: italic;
    color: var(--learning-accent-dark);
    margin-bottom: 0.5rem;
}

.page-header .reference {
    font-size: 0.9rem;
    color: var(--learning-text-muted);
    font-weight: 500;
}

/* Tabs */
.tabs-container {
    margin-bottom: 2rem;
}

.tabs {
    display: flex;
    gap: 0.5rem;
    border-bottom: 2px solid var(--learning-border);
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.tab-button {
    background: none;
    border: none;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--learning-text-muted);
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
    font-family: var(--font-sans);
    position: relative;
    bottom: -2px;
}

.tab-button:hover {
    color: var(--learning-accent);
}

.tab-button.active {
    color: var(--learning-accent-dark);
    border-bottom-color: var(--learning-accent);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.tab-content.active {
    display: block;
}

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

.tab-content h2 {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    color: var(--learning-accent-dark);
    margin-bottom: 0.5rem;
}

.tab-content .subtitle {
    font-size: 1.05rem;
    color: var(--learning-secondary);
    font-style: italic;
    margin-bottom: 1.5rem;
}

.tab-content .virtue {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(91, 124, 153, 0.1);
    color: var(--learning-accent-dark);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
}

.tab-content p {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--learning-text);
    margin-bottom: 1.25rem;
}

.tab-content ul {
    margin-left: 1.5rem;
    margin-bottom: 1.25rem;
}

.tab-content li {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 0.75rem;
    color: var(--learning-text);
}

/* Days Alive Counter */
.counter-display {
    background: var(--learning-card-bg);
    border: 2px solid var(--learning-accent);
    border-radius: 12px;
    padding: 3rem 2rem;
    text-align: center;
    margin-bottom: 3rem;
}

.counter-display h2 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    color: var(--learning-accent-dark);
    margin-bottom: 2rem;
}

.counter-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.counter-item {
    text-align: center;
}

.counter-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--learning-accent);
    display: block;
    font-variant-numeric: tabular-nums;
}

.counter-label {
    font-size: 0.85rem;
    color: var(--learning-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    margin-top: 0.5rem;
}

.counter-birth {
    font-size: 0.95rem;
    color: var(--learning-text-muted);
    margin-top: 1rem;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--learning-accent), var(--learning-secondary));
}

.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
    padding-left: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.5rem;
    top: 0.25rem;
    width: 14px;
    height: 14px;
    background: var(--learning-accent);
    border: 3px solid var(--learning-bg);
    border-radius: 50%;
    box-shadow: 0 0 0 3px var(--learning-card-bg);
}

.timeline-year {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--learning-accent);
    margin-bottom: 0.5rem;
}

.timeline-theme {
    font-size: 1.15rem;
    font-style: italic;
    color: var(--learning-accent-dark);
    margin-bottom: 0.5rem;
}

.timeline-description {
    font-size: 0.95rem;
    color: var(--learning-text-muted);
    line-height: 1.6;
}

/* Quote Sections */
.quote-section {
    margin-bottom: 3rem;
}

.quote-section h2 {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--learning-accent-dark);
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--learning-border);
}

.quote-block {
    background: var(--learning-card-bg);
    border-left: 4px solid var(--learning-accent);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-radius: 0 8px 8px 0;
}

.quote-text {
    font-family: var(--font-serif);
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--learning-text);
    font-style: italic;
    margin-bottom: 0.75rem;
}

.quote-reference {
    font-size: 0.9rem;
    color: var(--learning-text-muted);
    font-weight: 500;
    font-style: normal;
}

.prayer-block {
    background: linear-gradient(135deg,
        rgba(91, 124, 153, 0.05) 0%,
        rgba(107, 93, 143, 0.05) 100%);
    border: 2px solid var(--learning-accent-light);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.prayer-block .quote-text {
    font-size: 1.1rem;
    color: var(--learning-accent-dark);
}

/* Library Placeholders */
.library-category {
    background: var(--learning-card-bg);
    border: 1px solid var(--learning-border);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.library-category h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--learning-accent-dark);
    margin-bottom: 0.75rem;
}

.library-category p {
    font-size: 1rem;
    color: var(--learning-text-muted);
    line-height: 1.6;
}

.coming-soon {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(139, 115, 85, 0.1);
    color: var(--learning-secondary);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    margin-top: 0.5rem;
}

/* Featured CTA Button Hover */
a[href*="days-alive-calculator"] {
    transition: all 0.2s !important;
}

a[href*="days-alive-calculator"]:hover {
    background: var(--learning-accent-dark) !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 12px rgba(91, 124, 153, 0.3) !important;
}

/* Footer */
.footer {
    border-top: 1px solid var(--learning-border);
    padding: 2rem 1.5rem;
    text-align: center;
    color: var(--learning-text-muted);
    font-size: 0.85rem;
    background: var(--learning-card-bg);
}

.footer a {
    color: var(--learning-accent);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 700px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-verse {
        font-size: 1.1rem;
    }

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

    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-button {
        white-space: nowrap;
        padding: 0.875rem 1.25rem;
        font-size: 0.95rem;
    }

    .counter-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .counter-number {
        font-size: 2rem;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    .timeline {
        padding-left: 1.5rem;
    }

    .timeline-item {
        padding-left: 1.5rem;
    }
}

@media (max-width: 480px) {
    .counter-grid {
        grid-template-columns: 1fr;
    }
}