@import url('https://fonts.googleapis.com/css2?family=Grenze:wght@400;500;600;700&family=Crimson+Pro:ital,wght@0,300;0,400;0,500;0,600;1,300;1,400&display=swap');

:root {
    --color-bg: #f6f3ee;
    --color-surface: #ffffff;
    --color-surface-muted: #f0ede7;
    --color-border: #e2ded6;
    --color-border-light: #ece9e2;

    --color-text: #2a2520;
    --color-text-secondary: #6b6560;
    --color-text-muted: #9e9890;
    --color-text-faint: #b8b3ac;

    --color-accent: #3d6b4f;
    --color-accent-hover: #325a42;
    --color-accent-light: #e8f0eb;
    --color-changed: #b5432a;
    --color-note-bg: #faf6ee;
    --color-note-border: #d4c5a0;
    --color-note-text: #6a5a3e;
    --color-focus: #4a8db7;

    --font-display: 'Grenze', serif;
    --font-body: 'Crimson Pro', serif;

    --max-width: 720px;
    --header-height: 56px;
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 40px;
    --space-2xl: 64px;
}

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

html {
    font-size: 18px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.75;
    min-height: 100vh;
}

/* ── Navigation header ── */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    height: var(--header-height);
}

.site-header .header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

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

.header-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-text);
    letter-spacing: 0.01em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

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

.nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    background: var(--color-surface);
    color: var(--color-text-secondary);
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    text-decoration: none;
    white-space: nowrap;
}

.nav-btn:hover {
    background: var(--color-surface-muted);
    color: var(--color-text);
    border-color: var(--color-text-muted);
}

.nav-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.nav-btn:disabled:hover {
    background: var(--color-surface);
    color: var(--color-text-secondary);
    border-color: var(--color-border);
}

.nav-btn--icon {
    padding: 0;
    width: 36px;
}

.nav-btn--approve {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

.nav-btn--approve:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: #fff;
}

.nav-btn--approve.is-saved {
    background: var(--color-accent-light);
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.nav-btn i {
    font-size: 18px;
    line-height: 1;
}

/* ── Save feedback ── */

.save-toast {
    position: fixed;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--color-text);
    color: var(--color-bg);
    padding: 10px 20px;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    z-index: 200;
}

.save-toast.is-visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ── Page layout ── */

.page-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-xl) var(--space-md) var(--space-2xl);
}

/* ── Chapter heading ── */

.chapter-heading {
    margin-bottom: var(--space-xl);
}

.chapter-heading h1 {
    font-family: var(--font-display);
    font-size: 2.4rem;
    font-weight: 600;
    color: var(--color-text);
    line-height: 1.15;
    letter-spacing: -0.01em;
    margin-bottom: var(--space-sm);
}

.chapter-heading .subtitle {
    font-family: var(--font-body);
    font-size: 0.88rem;
    color: var(--color-text-muted);
    font-weight: 400;
}

/* ── Legend ── */

.legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: 8px;
    margin-bottom: var(--space-xl);
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.legend-swatch {
    width: 12px;
    height: 12px;
    border-radius: 3px;
    flex-shrink: 0;
}

.legend-swatch--original {
    background: var(--color-surface-muted);
    border: 1px solid var(--color-border);
}

.legend-swatch--changed {
    background: var(--color-changed);
}

.legend-swatch--note {
    background: var(--color-note-border);
}

/* ── Stats ── */

.stats {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border-light);
}

/* ── Verse blocks ── */

.verse-block {
    margin-bottom: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: 8px;
    transition: border-color 0.2s ease;
}

.verse-block:hover {
    border-color: var(--color-border);
}

.verse-num {
    font-family: var(--font-body);
    font-weight: 600;
    color: var(--color-text-faint);
    font-size: 0.72rem;
    vertical-align: super;
    margin-right: 3px;
    user-select: none;
}

.original {
    color: var(--color-text-muted);
    font-size: 0.82rem;
    line-height: 1.6;
    margin-bottom: var(--space-sm);
    padding: var(--space-sm) 10px;
    background: var(--color-surface-muted);
    border-radius: 4px;
}

.source-label {
    font-family: var(--font-body);
    font-size: 0.62rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-text-faint);
    display: block;
    margin-bottom: 2px;
}

.note {
    font-size: 0.78rem;
    color: var(--color-note-text);
    background: var(--color-note-bg);
    border-left: 2px solid var(--color-note-border);
    padding: var(--space-xs) 10px;
    margin-bottom: var(--space-sm);
    border-radius: 0 4px 4px 0;
    font-style: italic;
    line-height: 1.5;
}

.modern {
    padding: var(--space-sm) 10px;
    border: 1px solid transparent;
    border-radius: 4px;
    min-height: 1.5em;
    outline: none;
    transition: border-color 0.2s ease, background 0.2s ease;
    line-height: 1.75;
}

.modern:hover {
    border-color: var(--color-border);
}

.modern:focus {
    border-color: var(--color-focus);
    background: #fafcfe;
}

.changed {
    color: var(--color-changed);
    font-weight: 600;
}

/* ── Index page ── */

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

.index-hero h1 {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.1;
    margin-bottom: var(--space-sm);
}

.index-hero p {
    font-size: 1rem;
    color: var(--color-text-secondary);
    max-width: 480px;
    margin: 0 auto;
}

.book-row {
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border-light);
}

.book-row:last-child {
    border-bottom: none;
}

.book-row-name {
    font-family: var(--font-display);
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text);
    min-width: 120px;
    flex-shrink: 0;
}

.book-row-progress {
    font-family: var(--font-body);
    font-size: 0.72rem;
    color: var(--color-text-faint);
    min-width: 64px;
    flex-shrink: 0;
    text-align: right;
}

.book-row-chapters {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    flex: 1;
    min-width: 0;
}

.ch-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 26px;
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 0.72rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.12s ease;
    border: 1px solid var(--color-border-light);
    background: var(--color-surface);
    color: var(--color-text-secondary);
}

.ch-pill:hover {
    border-color: var(--color-text-muted);
    background: var(--color-surface-muted);
}

.ch-pill--approved {
    background: var(--color-accent-light);
    color: var(--color-accent);
    border-color: transparent;
}

.ch-pill--approved:hover {
    background: var(--color-accent);
    color: #fff;
    border-color: var(--color-accent);
}

.testament-group {
    margin-bottom: var(--space-xl);
}

.testament-title {
    font-family: var(--font-body);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-text-faint);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-border);
}

.index-legend {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    margin-bottom: var(--space-xl);
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.index-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.index-legend-pill {
    width: 18px;
    height: 16px;
    border-radius: 3px;
    display: inline-block;
}

.index-legend-pill--review {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
}

.index-legend-pill--approved {
    background: var(--color-accent-light);
}

/* ── Empty state ── */

.empty-state {
    text-align: center;
    padding: var(--space-2xl) var(--space-md);
    color: var(--color-text-muted);
}

.empty-state i {
    font-size: 48px;
    margin-bottom: var(--space-md);
    display: block;
    opacity: 0.4;
}

.empty-state p {
    font-size: 0.95rem;
}

/* ── Responsive ── */

@media (max-width: 600px) {
    html { font-size: 16px; }
    :root { --header-height: 48px; }

    .site-header .header-inner {
        padding: 0 var(--space-sm);
    }

    .header-title {
        font-size: 1rem;
    }

    .nav-btn {
        height: 32px;
        padding: 0 8px;
        font-size: 0.78rem;
    }

    .nav-btn--icon {
        width: 32px;
    }

    .page-container {
        padding: var(--space-lg) var(--space-sm) var(--space-xl);
    }

    .chapter-heading h1 {
        font-size: 1.8rem;
    }

    .index-hero h1 {
        font-size: 2.2rem;
    }

    .verse-block {
        padding: var(--space-sm) var(--space-md);
    }

    .book-row {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .book-row-name {
        min-width: unset;
    }

    .book-row-progress {
        text-align: left;
    }

    .legend {
        flex-direction: column;
        gap: var(--space-sm);
    }

    .nav-btn .btn-label {
        display: none;
    }
}