/* ============================================================
   Westminster Catechisms - Main Stylesheet
   Font: Playfair Display (headings) + Source Serif 4 (body)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,600;0,700;1,400;1,600&family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;1,8..60,300;1,8..60,400&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── CSS Variables ─────────────────────────────────────────── */

:root {
    /* Light theme */
    --bg-primary:     #faf8f4;
    --bg-secondary:   #f2ede4;
    --bg-card:        #ffffff;
    --bg-sidebar:     #1a1410;
    --bg-sidebar-sec: #251e18;

    --text-primary:   #1a1410;
    --text-secondary: #5a4f43;
    --text-muted:     #9a8f83;
    --text-sidebar:   #e8dfd4;
    --text-sidebar-m: #a89a8c;

    --accent:         #8b3a2a;
    --accent-light:   #b05040;
    --accent-subtle:  #f7ede8;
    --accent-border:  #d4a89a;

    --border:         #e4ddd4;
    --border-strong:  #c9bfb4;

    --shadow-sm:      0 1px 3px rgba(26,20,16,0.08);
    --shadow-md:      0 4px 16px rgba(26,20,16,0.10);
    --shadow-lg:      0 8px 32px rgba(26,20,16,0.14);

    --sidebar-width:  280px;
    --header-height:  60px;
    --radius:         8px;
    --radius-lg:      12px;
    --transition:     0.2s ease;
}

[data-theme="dark"] {
    --bg-primary:     #0f0d0b;
    --bg-secondary:   #1a1610;
    --bg-card:        #201c17;
    --bg-sidebar:     #0a0806;
    --bg-sidebar-sec: #141008;

    --text-primary:   #f0e8de;
    --text-secondary: #c0b0a0;
    --text-muted:     #7a6a5a;
    --text-sidebar:   #e0d0c0;
    --text-sidebar-m: #806050;

    --accent:         #c85a44;
    --accent-light:   #e07060;
    --accent-subtle:  #2a1a14;
    --accent-border:  #7a3a2a;

    --border:         #2a2218;
    --border-strong:  #3a3028;

    --shadow-sm:      0 1px 3px rgba(0,0,0,0.3);
    --shadow-md:      0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg:      0 8px 32px rgba(0,0,0,0.5);
}

/* ── Reset & Base ─────────────────────────────────────────── */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Source Serif 4', Georgia, serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
    transition: background var(--transition), color var(--transition);
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color var(--transition);
}
a:hover { color: var(--accent-light); }

/* ── Layout ───────────────────────────────────────────────── */

.app-wrapper {
    display: flex;
    min-height: 100vh;
}

/* ── Sidebar ──────────────────────────────────────────────── */

.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: var(--bg-sidebar);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 200;
    transition: transform var(--transition);
    overflow: hidden;
}

.sidebar-header {
    padding: 24px 20px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    flex-shrink: 0;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 4px;
}

.sidebar-logo-icon {
    width: 32px;
    height: 32px;
    background: var(--accent);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    color: #fff;
    flex-shrink: 0;
}

.sidebar-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.0rem;
    font-weight: 600;
    color: var(--text-sidebar);
    line-height: 1.2;
}

.sidebar-subtitle {
    font-size: 0.72rem;
    color: var(--text-sidebar-m);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-top: 2px;
    padding-left: 42px;
}

/* Search in sidebar */
.sidebar-search {
    padding: 12px 16px;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    flex-shrink: 0;
}

.sidebar-search-input {
    width: 100%;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.10);
    border-radius: var(--radius);
    padding: 8px 12px 8px 34px;
    color: var(--text-sidebar);
    font-family: 'Source Serif 4', serif;
    font-size: 0.85rem;
    outline: none;
    transition: border-color var(--transition), background var(--transition);
    position: relative;
}

.sidebar-search-input::placeholder { color: var(--text-sidebar-m); }
.sidebar-search-input:focus {
    border-color: var(--accent);
    background: rgba(255,255,255,0.10);
}

.sidebar-search-wrap {
    position: relative;
}

.sidebar-search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-sidebar-m);
    font-size: 0.85rem;
    pointer-events: none;
}

/* Catechism tabs in sidebar */
.sidebar-tabs {
    display: flex;
    padding: 10px 16px 0;
    gap: 6px;
    flex-shrink: 0;
}

.sidebar-tab {
    flex: 1;
    padding: 6px 8px;
    border-radius: var(--radius);
    font-size: 0.75rem;
    font-family: 'Source Serif 4', serif;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    border: 1px solid rgba(255,255,255,0.10);
    background: transparent;
    color: var(--text-sidebar-m);
    cursor: pointer;
    text-align: center;
    transition: all var(--transition);
}

.sidebar-tab:hover {
    color: var(--text-sidebar);
    background: rgba(255,255,255,0.06);
}

.sidebar-tab.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

/* Question list */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0 20px;
}

.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.10);
    border-radius: 2px;
}
.sidebar-nav::-webkit-scrollbar-thumb:hover {
    background: rgba(255,255,255,0.20);
}

.q-group-label {
    padding: 14px 16px 4px;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.10em;
    text-transform: uppercase;
    color: var(--text-sidebar-m);
}

.q-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 16px;
    cursor: pointer;
    transition: background var(--transition);
    border-left: 3px solid transparent;
}

.q-item:hover {
    background: rgba(255,255,255,0.04);
}

.q-item.active {
    background: rgba(255,255,255,0.07);
    border-left-color: var(--accent);
}

.q-item.search-hide { display: none; }

.q-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    color: var(--accent);
    min-width: 28px;
    padding-top: 2px;
    flex-shrink: 0;
}

.q-preview {
    font-size: 0.80rem;
    color: var(--text-sidebar-m);
    line-height: 1.4;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.q-item.active .q-preview { color: var(--text-sidebar); }
.q-item.active .q-num { font-weight: 700; }

/* Search results highlight */
.q-preview mark {
    background: transparent;
    color: var(--accent-light);
    font-weight: 600;
}

/* ── Main Content ─────────────────────────────────────────── */

.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ── Top Header ───────────────────────────────────────────── */

.topbar {
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 32px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-card);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.topbar-crumb {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.topbar-crumb span {
    color: var(--text-primary);
    font-weight: 600;
}

.topbar-crumb .sep { color: var(--border-strong); }

.topbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Menu toggle (mobile) */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--text-primary);
    border-radius: var(--radius);
    transition: background var(--transition);
}
.menu-toggle:hover { background: var(--bg-secondary); }
.menu-toggle svg { display: block; }

/* Theme toggle */
.theme-toggle {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 7px 12px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition);
    font-family: 'Source Serif 4', serif;
}
.theme-toggle:hover {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-strong);
}

/* Nav prev/next */
.nav-btns {
    display: flex;
    gap: 4px;
}

.nav-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 7px 10px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: 4px;
    font-family: 'Source Serif 4', serif;
    text-decoration: none;
}
.nav-btn:hover {
    background: var(--bg-card);
    color: var(--text-primary);
    border-color: var(--border-strong);
}
.nav-btn:disabled, .nav-btn.disabled {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
}

/* Copy link button */
.copy-link-btn {
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 7px 10px;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.80rem;
    transition: all var(--transition);
    font-family: 'Source Serif 4', serif;
    display: flex;
    align-items: center;
    gap: 4px;
}
.copy-link-btn:hover {
    color: var(--accent);
    border-color: var(--accent-border);
    background: var(--accent-subtle);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--text-primary);
    color: var(--bg-primary);
    padding: 10px 18px;
    border-radius: var(--radius);
    font-size: 0.85rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(8px);
    transition: all 0.25s ease;
    pointer-events: none;
    z-index: 9999;
    font-family: 'Source Serif 4', serif;
}
.toast.show {
    opacity: 1;
    transform: translateY(0);
}

/* ── Question Display ─────────────────────────────────────── */

.content-area {
    padding: 40px 48px 80px;
    max-width: 860px;
}

/* Welcome / empty state */
.welcome-state {
    padding: 60px 48px;
    max-width: 640px;
    text-align: center;
    margin: 0 auto;
}

.welcome-icon {
    width: 72px;
    height: 72px;
    background: var(--accent-subtle);
    border: 2px solid var(--accent-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 2rem;
}

.welcome-state h1 {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 700;
}

.welcome-state p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
    margin-bottom: 8px;
}

/* Question card */
.q-card {
    animation: fadeSlide 0.25s ease;
}

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

.q-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--accent-subtle);
    border: 1px solid var(--accent-border);
    border-radius: 20px;
    padding: 4px 12px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 20px;
    font-family: 'JetBrains Mono', monospace;
}

.q-heading {
    font-family: 'Playfair Display', serif;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.q-text {
    font-family: 'Playfair Display', serif;
    font-size: 1.50rem;
    line-height: 1.5;
    color: var(--text-primary);
    font-weight: 400;
    font-style: italic;
    margin-bottom: 32px;
    padding-bottom: 28px;
    border-bottom: 1px solid var(--border);
}

.a-heading {
    font-family: 'Playfair Display', serif;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.a-text {
    font-family: 'Source Serif 4', serif;
    font-size: 1.10rem;
    line-height: 1.85;
    color: var(--text-primary);
    margin-bottom: 36px;
}

/* Scripture reference numbers in answer text */
.a-text sup {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    color: var(--accent);
    vertical-align: super;
    cursor: help;
    font-weight: 500;
}

/* Scripture references section */
.scripture-section {
    margin-top: 8px;
    border-top: 1px solid var(--border);
    padding-top: 28px;
}

.scripture-section-heading {
    font-family: 'Playfair Display', serif;
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
    width: fit-content;
}

.scripture-section-heading:hover { color: var(--text-secondary); }

.scripture-toggle-icon {
    transition: transform var(--transition);
    font-size: 0.75rem;
}

.scripture-section.collapsed .scripture-toggle-icon {
    transform: rotate(-90deg);
}

.scripture-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.scripture-section.collapsed .scripture-list {
    max-height: 0;
    overflow: hidden;
}

.scripture-ref {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.scripture-ref-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    color: var(--accent);
    min-width: 20px;
    padding-top: 3px;
    font-weight: 500;
    flex-shrink: 0;
}

.scripture-ref-content {}

.scripture-ref-citation {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 3px;
    font-family: 'Source Serif 4', serif;
}

.scripture-ref-text {
    font-size: 0.84rem;
    color: var(--text-secondary);
    font-style: italic;
    line-height: 1.6;
    font-family: 'Source Serif 4', serif;
}

/* No results */
.no-results {
    padding: 16px;
    text-align: center;
    color: var(--text-sidebar-m);
    font-size: 0.82rem;
    font-style: italic;
}

/* ── Search Results Page ───────────────────────────────────── */

.search-page {
    padding: 40px 48px 80px;
    max-width: 860px;
}

.search-page-title {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.search-page-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.search-result-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    margin-bottom: 14px;
    background: var(--bg-card);
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: var(--shadow-sm);
}

.search-result-item:hover {
    border-color: var(--accent-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.search-result-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.search-result-badge {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    color: var(--accent);
    font-weight: 600;
    background: var(--accent-subtle);
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid var(--accent-border);
}

.search-result-q {
    font-family: 'Playfair Display', serif;
    font-size: 1.0rem;
    font-style: italic;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 8px;
}

.search-result-a {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

mark {
    background: rgba(200, 90, 68, 0.15);
    color: var(--accent);
    border-radius: 2px;
    padding: 0 1px;
}

/* ── Sidebar Overlay (mobile) ─────────────────────────────── */

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 190;
    backdrop-filter: blur(2px);
}

/* ── Responsive ───────────────────────────────────────────── */

@media (max-width: 900px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .sidebar-overlay.open {
        display: block;
    }
    .main-content {
        margin-left: 0;
    }
    .menu-toggle {
        display: flex;
    }
    .content-area,
    .search-page {
        padding: 24px 20px 60px;
    }
    .topbar {
        padding: 0 16px;
    }
    .q-text {
        font-size: 1.25rem;
    }
    .a-text {
        font-size: 1.0rem;
    }
}

@media (max-width: 560px) {
    .topbar-crumb { display: none; }
    .copy-link-btn span { display: none; }
}

/* ── Utility ──────────────────────────────────────────────── */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
}