/* Spurgeon AI - Modern Stylesheet (2025)
   Deep Navy + Antique Gold palette */

:root {
    /* Navy + Gold Palette */
    --spurgeon-primary: #1a2744;       /* Deep navy */
    --spurgeon-secondary: #2d4a6f;     /* Medium navy for links */
    --spurgeon-accent: #c9a227;        /* Antique gold */
    --spurgeon-accent-light: #f0e6c8;  /* Light gold/cream */
    --spurgeon-bg: #f8f9fa;            /* Cool white */
    --spurgeon-text: #2c3e50;          /* Dark slate */
    --spurgeon-text-light: #64748b;    /* Slate gray */
    --spurgeon-light: #f1f5f9;         /* Light cool gray */
    --spurgeon-border: #e2e8f0;        /* Cool border */
    --spurgeon-card: #ffffff;          /* Pure white cards */
    
    /* Typography */
    --font-header: 'Georgia', 'Times New Roman', serif;
    --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --font-scripture: 'Georgia', serif;
    
    /* Spacing */
    --max-width: 820px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    
    /* Shadows - layered for depth (navy-tinted) */
    --shadow-sm: 0 1px 2px rgba(26, 39, 68, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(26, 39, 68, 0.07), 0 2px 4px -1px rgba(26, 39, 68, 0.04);
    --shadow-lg: 0 10px 25px -5px rgba(26, 39, 68, 0.1), 0 8px 10px -6px rgba(26, 39, 68, 0.05);
    --shadow-xl: 0 20px 40px -10px rgba(26, 39, 68, 0.15);
    
    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; padding: 0; }

/* Base */
body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--spurgeon-text);
    background: var(--spurgeon-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--spurgeon-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover { 
    color: var(--spurgeon-primary);
    text-decoration: underline;
}

h1, h2, h3, h4 {
    font-family: var(--font-header);
    color: var(--spurgeon-primary);
    line-height: 1.25;
    font-weight: 400;
    letter-spacing: -0.01em;
}

h1 { font-size: 2.25rem; margin-bottom: var(--spacing-md); }
h2 { font-size: 1.5rem; margin-bottom: var(--spacing-sm); }
h3 { font-size: 1.25rem; }

/* Header - deep navy with gold accents */
.site-header {
    background: var(--spurgeon-primary);
    padding: var(--spacing-sm) var(--spacing-md);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.header-content {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.site-title { 
    margin: 0; 
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.02em;
}
.site-title a { 
    color: var(--spurgeon-accent);
    text-decoration: none;
}
.site-title a:hover {
    color: #fff;
    text-decoration: none;
}

.main-nav { 
    display: flex; 
    gap: var(--spacing-md);
}
.main-nav a { 
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.875rem;
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    position: relative;
    text-decoration: none;
}
.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--spurgeon-accent);
    transition: width 0.2s ease;
}
.main-nav a:hover::after {
    width: 100%;
}
.main-nav a:hover { 
    color: #fff;
    text-decoration: none;
}

/* Main Content */
.main-content {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* Sermon Navigation */
.sermon-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-lg);
    font-size: 0.875rem;
    border-bottom: 1px solid var(--spurgeon-border);
}
.sermon-nav.bottom {
    border-bottom: none;
    border-top: 1px solid var(--spurgeon-border);
    margin-top: var(--spacing-xl);
    margin-bottom: 0;
    padding-top: var(--spacing-lg);
}
.nav-prev, .nav-next { 
    flex: 1;
    color: var(--spurgeon-text-light);
}
.nav-prev:hover, .nav-next:hover {
    color: var(--spurgeon-secondary);
}
.nav-next { text-align: right; }
.nav-up { 
    text-align: center; 
    font-weight: 600;
    color: var(--spurgeon-secondary);
}
.disabled { visibility: hidden; }

/* Breadcrumb */
.breadcrumb {
    font-size: 0.8rem;
    color: var(--spurgeon-text-light);
    margin-bottom: var(--spacing-md);
}
.breadcrumb a { color: var(--spurgeon-text-light); }

/* Sermon Article */
.sermon-header { margin-bottom: var(--spacing-xl); }
.sermon-header h1 {
    font-size: 2.5rem;
    margin: 0 0 var(--spacing-md);
    line-height: 1.2;
}

.sermon-meta {
    color: var(--spurgeon-text-light);
    font-size: 0.9rem;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs) var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

/* Scripture Text Block - navy accent */
.scripture-text {
    background: linear-gradient(135deg, var(--spurgeon-light) 0%, #fff 100%);
    border-left: 4px solid var(--spurgeon-accent);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    font-family: var(--font-scripture);
    font-style: italic;
    font-size: 1.1rem;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    box-shadow: var(--shadow-sm);
}
.scripture-text p { 
    margin: 0 0 var(--spacing-sm);
    line-height: 1.8;
}
.scripture-text cite {
    display: block;
    font-style: normal;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--spurgeon-secondary);
    margin-top: var(--spacing-sm);
}

/* Topic Tags - unified style with subtle border */
.topic-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin: var(--spacing-md) 0;
}
.topic-tag {
    background: var(--spurgeon-light);
    border: 1px solid var(--spurgeon-border);
    padding: 0.35rem 0.9rem;
    border-radius: 2rem;
    font-size: 0.8rem;
    color: var(--spurgeon-secondary);
    font-weight: 500;
    transition: all 0.2s ease;
}
.topic-tag:hover { 
    background: var(--spurgeon-secondary);
    border-color: var(--spurgeon-secondary);
    color: #fff; 
    text-decoration: none;
    transform: translateY(-1px);
}
.topic-tags.small .topic-tag { font-size: 0.7rem; padding: 0.2rem 0.6rem; }

/* Sermon Sections */
.sermon-section {
    margin: var(--spacing-xl) 0;
    scroll-margin-top: 5rem;
}
.sermon-section h2 {
    font-size: 1.6rem;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--spurgeon-accent-light);
}
.subsection { margin-left: var(--spacing-md); }
.subsection h3 { 
    font-size: 1.15rem; 
    color: var(--spurgeon-secondary);
    margin-bottom: var(--spacing-sm);
}

/* Sermon Footer */
.sermon-footer {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 2px solid var(--spurgeon-border);
}
.scripture-references h3 { 
    font-size: 1rem; 
    margin-bottom: var(--spacing-sm);
    color: var(--spurgeon-text-light);
}
.scripture-references ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs) var(--spacing-md);
}
.primary-marker { 
    color: var(--spurgeon-text-light);
    font-size: 0.75rem;
    font-style: italic;
}
.sermon-info { 
    color: var(--spurgeon-text-light);
    font-size: 0.875rem;
    margin-top: var(--spacing-md);
}

/* Volume Grid (Master Index) - modern cards */
.intro { 
    color: var(--spurgeon-text-light);
    font-size: 1.15rem;
    margin-bottom: var(--spacing-lg);
}

.volume-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.volume-card {
    background: var(--spurgeon-card);
    border: 1px solid var(--spurgeon-border);
    border-radius: var(--radius-md);
    box-shadow: none;
    transition: all 0.25s ease;
    overflow: hidden;
}
.volume-card:hover { 
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}
.volume-card a {
    display: block;
    padding: var(--spacing-lg);
    color: inherit;
    text-decoration: none;
}
.volume-card h2 { 
    margin: 0 0 var(--spacing-sm);
    font-size: 1.35rem;
}
.volume-meta { 
    font-size: 0.875rem;
    color: var(--spurgeon-text-light);
}

/* Sermon List (Volume Index) - modern cards */
.sermon-list { 
    display: flex; 
    flex-direction: column; 
    gap: var(--spacing-md);
}

.sermon-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--spurgeon-card);
    border: 1px solid var(--spurgeon-border);
    border-radius: var(--radius-md);
    box-shadow: none;
    transition: all 0.2s ease;
}
.sermon-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(4px);
}

.sermon-number {
    font-family: var(--font-header);
    font-size: 1.5rem;
    color: var(--spurgeon-accent);
    min-width: 3.5rem;
    font-weight: 400;
}
.sermon-details h2 { 
    margin: 0 0 0.35rem;
    font-size: 1.1rem;
}
.sermon-details .sermon-meta { margin: 0; }

.volume-info { 
    color: var(--spurgeon-text-light);
    margin-bottom: var(--spacing-lg);
}
.volume-nav { 
    display: flex; 
    justify-content: space-between; 
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--spurgeon-border);
}

/* Scripture/Topic Grids */
.testament { margin-bottom: var(--spacing-lg); }
.testament h2 { 
    font-size: 1.35rem;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--spurgeon-accent-light);
}

.book-grid, .topic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--spacing-sm);
}

.book-link, .topic-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--spurgeon-card);
    border: 1px solid var(--spurgeon-border);
    border-radius: var(--radius-sm);
    box-shadow: none;
    transition: all 0.2s ease;
}
.book-link:hover, .topic-link:hover { 
    box-shadow: var(--shadow-lg);
    text-decoration: none;
    transform: translateY(-2px);
}
.sermon-count { 
    color: var(--spurgeon-secondary);
    font-size: 0.8rem;
    background: var(--spurgeon-light);
    border: 1px solid var(--spurgeon-border);
    padding: 0.15rem 0.5rem;
    border-radius: 1rem;
}

/* Reference List */
.reference-list { 
    display: flex; 
    flex-direction: column; 
    gap: var(--spacing-sm);
}
.reference-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--spurgeon-card);
    border: 1px solid var(--spurgeon-border);
    border-radius: var(--radius-sm);
    box-shadow: none;
    transition: all 0.2s ease;
}
.reference-card:hover {
    box-shadow: var(--shadow-lg);
}
.reference-card .reference {
    font-family: var(--font-header);
    color: var(--spurgeon-secondary);
    min-width: 100px;
    font-weight: 600;
}
.reference-card h2 { margin: 0; font-size: 1rem; }

/* Quick Links */
.quick-links { 
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--spurgeon-border);
}
.quick-links h2 { 
    font-size: 1.15rem;
    margin-bottom: var(--spacing-sm);
}
.quick-links ul { 
    list-style: none; 
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm) var(--spacing-lg);
}
.quick-links li { margin: 0; }
.quick-links a {
    color: var(--spurgeon-secondary);
    font-weight: 500;
}

/* Footer */
.site-footer {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-md);
    color: var(--spurgeon-text-light);
    font-size: 0.875rem;
    border-top: 1px solid var(--spurgeon-border);
    margin-top: var(--spacing-xl);
    background: var(--spurgeon-light);
}

/* Responsive */
@media (max-width: 640px) {
    :root {
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .header-content { 
        flex-direction: column; 
        text-align: center;
        gap: var(--spacing-sm);
    }
    .main-nav { 
        gap: var(--spacing-sm);
        flex-wrap: wrap;
        justify-content: center;
    }
    .sermon-header h1 { font-size: 1.75rem; }
    .sermon-nav { font-size: 0.8rem; }
    .volume-grid { grid-template-columns: 1fr 1fr; }
    .book-grid, .topic-grid { grid-template-columns: 1fr; }
    .sermon-card { flex-direction: column; gap: var(--spacing-sm); }
    .reference-card { flex-direction: column; }
    .scripture-text { padding: var(--spacing-md); }
}

/* Print Stylesheet */
@media print {
    .site-header, .site-footer, .sermon-nav, .topic-tags, 
    .quick-links, nav { display: none !important; }
    body { 
        font-size: 11pt; 
        background: #fff;
        color: #000;
    }
    .main-content { max-width: 100%; padding: 0; }
    .sermon-header h1 { font-size: 18pt; }
    .scripture-text { 
        border-left-color: #000;
        background: #f5f5f5;
        box-shadow: none;
    }
    a { color: inherit; }
    .volume-card, .sermon-card { 
        box-shadow: none;
        border: 1px solid #ddd;
    }
}