/* ============================================
   Component Styles
   All values reference design tokens.
   ============================================ */

/* ==========================================
   SITE HEADER
   ========================================== */

.site-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0 var(--space-sm);
    background-color: var(--color-header-bg);
    border-bottom: 1px solid var(--color-header-border);
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-normal),
        border-color var(--transition-normal);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
    min-width: 0;
    overflow: hidden;
}

.site-title {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-heading);
    font-size: var(--text-base);
    font-weight: var(--weight-bold);
    color: var(--color-text);
    white-space: nowrap;
    text-decoration: none;
    transition: opacity var(--transition-fast), width var(--transition-fast);
}

.site-title:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.site-title.hidden {
    opacity: 0;
    width: 0;
    overflow: hidden;
    pointer-events: none;
}

.site-logo {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

.header-center {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
    margin: 0 auto;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

/* ==========================================
   HAMBURGER MENU (mobile)
   ========================================== */

.hamburger {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 32px;
    height: 32px;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.hamburger:hover {
    background-color: var(--color-surface-alt);
}

.hamburger span {
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 1px;
    transition: transform var(--transition-fast),
        opacity var(--transition-fast);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

/* ==========================================
   SEARCH BAR
   ========================================== */

.search-bar {
    position: relative;
    width: 100%;
}

.search-bar input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    padding-left: 2.5rem;
    background-color: var(--color-search-bg);
    border: 1px solid var(--color-search-border);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    color: var(--color-text);
    transition: background-color var(--transition-fast),
        border-color var(--transition-fast),
        box-shadow var(--transition-fast);
    outline: none;
    min-height: 36px;
}

.search-bar input::placeholder {
    color: var(--color-text-muted);
}

.search-bar input:focus {
    background-color: var(--color-search-focus-bg);
    border-color: var(--color-search-focus-border);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.search-bar .search-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--color-text-muted);
    pointer-events: none;
}

/* --- Search results dropdown --- */

.search-results {
    position: absolute;
    top: calc(100% + var(--space-xs));
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    max-height: 280px;
    overflow-y: auto;
    z-index: 200;
    display: none;
}

.search-results.visible {
    display: block;
}

.search-result-item {
    display: block;
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
    transition: background-color var(--transition-fast);
    text-decoration: none;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover {
    background-color: var(--color-surface-alt);
    text-decoration: none;
}

.search-result-title {
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--color-text);
}

.search-result-snippet {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-top: 2px;
}

.search-no-results {
    padding: var(--space-md);
    text-align: center;
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

/* ==========================================
   THEME TOGGLE
   ========================================== */

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    transition: background-color var(--transition-fast);
    color: var(--color-text);
    font-size: var(--text-xl);
    line-height: 1;
}

.theme-toggle:hover {
    background-color: var(--color-surface-alt);
}

/* ==========================================
   SIDEBAR NAVIGATION
   ========================================== */

.sidebar {
    background-color: var(--color-sidebar-bg);
    border-right: 1px solid var(--color-border);
    padding: var(--space-md) 0;
    transition: background-color var(--transition-normal),
        border-color var(--transition-normal);
}

.sidebar-nav {
    padding: 0;
}

.sidebar-nav a {
    display: block;
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: background-color var(--transition-fast),
        color var(--transition-fast);
    text-decoration: none;
}

.sidebar-nav a:hover {
    background-color: var(--color-sidebar-hover);
    color: var(--color-text);
    text-decoration: none;
}

.sidebar-nav a.active {
    background-color: var(--color-sidebar-active);
    color: var(--color-primary);
    font-weight: var(--weight-medium);
    border-right: 3px solid var(--color-primary);
}

/* --- Sidebar section (collapsible group) --- */

.sidebar-section {
    margin-bottom: var(--space-xs);
}

.sidebar-section-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--color-text);
    cursor: pointer;
    user-select: none;
    transition: background-color var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.sidebar-section-title:hover {
    background-color: var(--color-sidebar-hover);
}

.sidebar-section-title .chevron {
    font-size: var(--text-xs);
    transition: transform var(--transition-fast);
    color: var(--color-text-muted);
}

.sidebar-section.collapsed .chevron {
    transform: rotate(-90deg);
}

.sidebar-section-items {
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

.sidebar-section.collapsed .sidebar-section-items {
    max-height: 0 !important;
}

.sidebar-section-items a {
    padding-left: var(--space-2xl);
    font-size: var(--text-sm);
}

/* ==========================================
   SITE FOOTER
   ========================================== */

.site-footer {
    padding: var(--space-lg) var(--space-md);
    background-color: var(--color-footer-bg);
    border-top: 1px solid var(--color-border);
    text-align: center;
    transition: background-color var(--transition-normal),
        border-color var(--transition-normal);
}

.footer-content {
    max-width: var(--content-max-width);
    margin: 0 auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-lg);
    margin-bottom: var(--space-sm);
    flex-wrap: wrap;
}

.footer-links a {
    font-size: var(--text-sm);
    color: var(--color-footer-text);
    transition: color var(--transition-fast);
}

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

.footer-copyright {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* ==========================================
   TOPIC CARD (homepage)
   ========================================== */

.topic-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

@media (min-width: 480px) {
    .topic-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .topic-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.topic-card {
    display: block;
    padding: var(--space-lg);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        transform var(--transition-fast);
    text-decoration: none;
}

.topic-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    text-decoration: none;
}

.topic-card-title {
    font-size: var(--text-lg);
    font-weight: var(--weight-semibold);
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.topic-card-desc {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin: 0;
}

/* ==========================================
   VERSE BLOCK (content pages)
   ========================================== */

.verse-block {
    margin: var(--space-lg) 0;
    padding: var(--space-lg);
    background-color: var(--color-verse-bg);
    border-left: 4px solid var(--color-verse-border);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    transition: background-color var(--transition-normal),
        border-color var(--transition-normal);
}

.verse-ref {
    font-size: var(--text-lg);
    font-weight: var(--weight-semibold);
    color: var(--color-verse-ref);
    margin-bottom: var(--space-md);
}

.verse-ref a {
    color: var(--color-verse-ref);
}

.verse-ref a:hover {
    text-decoration: underline;
}

.verse-arabic {
    direction: rtl;
    text-align: right;
    font-family: var(--font-arabic);
    font-size: var(--text-xl);
    line-height: var(--leading-relaxed);
    padding: var(--space-md);
    background-color: var(--color-verse-arabic-bg);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.verse-translation {
    margin: var(--space-md) 0;
    padding: var(--space-md) var(--space-lg);
    background-color: var(--color-blockquote-bg);
    border-radius: var(--radius-sm);
    font-style: italic;
    color: var(--color-text-secondary);
    line-height: var(--leading-relaxed);
}

.verse-translation p {
    margin: 0;
}

.verse-translation cite {
    display: block;
    margin-top: var(--space-sm);
    font-size: var(--text-sm);
    font-style: normal;
    font-weight: var(--weight-medium);
    color: var(--color-text-muted);
}

.verse-source {
    margin: var(--space-sm) 0;
}

.verse-source a {
    font-size: var(--text-sm);
    color: var(--color-link);
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.verse-source a::before {
    content: '🔗';
    font-size: var(--text-xs);
}

.verse-source a:hover {
    text-decoration: underline;
}

.verse-explanation {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-light);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-normal);
}

.verse-explanation p {
    margin-bottom: var(--space-sm);
    color: var(--color-text-secondary);
}

.verse-explanation p:last-child {
    margin-bottom: 0;
}

/* ==========================================
   TABLE OF CONTENTS (content pages)
   ========================================== */

.toc {
    margin: var(--space-lg) 0;
    padding: var(--space-md) var(--space-lg);
    background-color: var(--color-surface-alt);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
}

.toc-title {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.toc ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: 0;
}

.toc li {
    margin-bottom: var(--space-xs);
}

.toc a {
    font-size: var(--text-sm);
    color: var(--color-link);
}

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

/* ==========================================
   HERO SECTION (homepage)
   ========================================== */

.hero {
    text-align: center;
    padding: var(--space-2xl) 0 var(--space-xl);
}

.hero h1 {
    font-size: var(--text-4xl);
    font-weight: var(--weight-bold);
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
    line-height: var(--leading-relaxed);
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-xl);
    background-color: var(--color-primary);
    color: var(--color-surface);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    transition: background-color var(--transition-fast),
        transform var(--transition-fast);
    text-decoration: none;
}

.hero-cta:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
    color: var(--color-surface);
    text-decoration: none;
}

/* ==========================================
   BACK TO TOP
   ========================================== */

.back-to-top {
    display: inline-block;
    margin-top: var(--space-xl);
    font-size: var(--text-sm);
    color: var(--color-link);
}

.back-to-top:hover {
    text-decoration: underline;
}

/* ==========================================
   COMPARISON BLOCK (Origins & Comparisons pages)
   ========================================== */

.comparison-block {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-xl);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.comparison-title {
    font-size: var(--text-lg);
    font-weight: var(--weight-semibold);
    padding: var(--space-md) var(--space-lg);
    background-color: var(--color-surface-alt);
    border-bottom: 1px solid var(--color-border);
    margin: 0;
    color: var(--color-text);
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr;
}

.comparison-col {
    padding: var(--space-lg);
}

.comparison-col+.comparison-col {
    border-top: 1px solid var(--color-border);
}

.comparison-col p {
    margin-bottom: 0;
}

.comparison-col p+p {
    margin-top: var(--space-sm);
}

.comparison-label {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.comparison-label--islam {
    background-color: var(--color-primary);
    color: var(--color-surface);
}

.comparison-label--zoroastrian {
    background-color: var(--color-accent);
    color: var(--color-text);
}

.comparison-full-row {
    padding: var(--space-lg);
    border-top: 1px solid var(--color-border);
    overflow-x: auto;
}

.comparison-note {
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--color-border);
    background-color: var(--color-surface-alt);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    line-height: var(--leading-relaxed);
}

.comparison-note p {
    margin-bottom: 0;
}

.comparison-note p+p {
    margin-top: var(--space-sm);
}

/* Prayer / comparison table */
.prayer-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}

.prayer-table th {
    background-color: var(--color-surface-alt);
    border: 1px solid var(--color-border);
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    font-weight: var(--weight-semibold);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-secondary);
}

.prayer-table td {
    border: 1px solid var(--color-border);
    padding: var(--space-sm) var(--space-md);
    vertical-align: top;
    color: var(--color-text);
}

.prayer-table tr:nth-child(even) td {
    background-color: var(--color-surface-alt);
}

.prayer-table .col-islam {
    border-left: 3px solid var(--color-primary);
}

.prayer-table .col-zoroastrian {
    border-left: 3px solid var(--color-accent);
}

@media (min-width: 768px) {
    .site-header {
        gap: var(--space-md);
        padding: 0 var(--space-md);
    }

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

    .site-title.hidden {
        opacity: 1;
        width: auto;
    }

    .header-center {
        max-width: 480px;
    }

    .search-bar input {
        padding: var(--space-md) var(--space-md);
        padding-left: 2.5rem;
        min-height: 40px;
        max-height: 40px;
        font-size: 0.95rem;
    }

    .search-bar .search-icon {
        width: 16px;
        height: 16px;
    }

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

    .comparison-col+.comparison-col {
        border-top: none;
        border-left: 1px solid var(--color-border);
    }
}