:root {
    --gradient-start: #f5ebe0;
    --gradient-end: #e8dcc9;
    --panel-bg: rgba(255, 253, 248, 0.95);
    --accent: #8b5a3c;
    --accent-dark: #5d3a1a;
    --text-dark: #2c2416;
    --text-muted: #8a7968;
    --border: rgba(139, 90, 60, 0.12);
    --verse-bg: rgba(255, 253, 248, 0.6);
    --shadow: rgba(139, 90, 60, 0.15);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: 'Georgia', 'Times New Roman', serif;
    background: linear-gradient(160deg, var(--gradient-start), var(--gradient-end));
    background-attachment: fixed;
    color: var(--text-dark);
    position: relative;
}

/* Add subtle paper texture */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(139, 90, 60, 0.03) 2px, rgba(139, 90, 60, 0.03) 4px);
    pointer-events: none;
    z-index: 1;
}

.reader-shell {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 20px 60px;
    position: relative;
    z-index: 2;
}

.reader-header {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 30px;
    padding: 20px 30px;
    background: var(--panel-bg);
    border-radius: 16px;
    box-shadow: 0 4px 20px var(--shadow);
    border: 1px solid var(--border);
}

.reader-header h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--accent-dark);
    letter-spacing: 0.02em;
    font-family: 'Georgia', serif;
}

.reader-header p {
    margin: 0;
    color: var(--text-muted);
    font-style: italic;
    font-size: 1.05rem;
}

.home-link {
    text-decoration: none;
    color: var(--accent);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}

.home-link:hover {
    color: var(--accent-dark);
}

.reader-main {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 24px;
}

.library-panel,
.chapter-panel {
    background: var(--panel-bg);
    border-radius: 16px;
    padding: 28px;
    box-shadow: 0 8px 32px var(--shadow);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
}

.library-panel {
    height: fit-content;
    max-height: calc(100vh - 200px);
    position: sticky;
    top: 20px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.panel-title {
    margin: 0 0 20px;
    font-size: 1rem;
    letter-spacing: 0.15em;
    color: var(--accent-dark);
    text-transform: uppercase;
    font-weight: 700;
    border-bottom: 2px solid var(--border);
    padding-bottom: 12px;
}

.library-list {
    padding-right: 8px;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

/* Beautiful scrollbar for library panel */
.library-list::-webkit-scrollbar {
    width: 8px;
}

.library-list::-webkit-scrollbar-track {
    background: rgba(139, 90, 60, 0.05);
    border-radius: 8px;
}

.library-list::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 8px;
    border: 2px solid rgba(255, 253, 248, 0.4);
}

.library-list::-webkit-scrollbar-thumb:hover {
    background: var(--accent-dark);
}

.panel-empty {
    color: var(--text-muted);
    font-style: italic;
}

.testament {
    margin-bottom: 28px;
}

.testament:last-child {
    margin-bottom: 0;
}

.testament h3 {
    margin: 0 0 14px;
    font-size: 0.9rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-weight: 700;
}

.book-card {
    margin-bottom: 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px 16px;
    background: rgba(255, 253, 248, 0.8);
    box-shadow: 0 2px 8px rgba(139, 90, 60, 0.08);
    transition: all 0.2s ease;
}

.book-card:last-child {
    margin-bottom: 0;
}

.book-card:hover {
    box-shadow: 0 4px 16px rgba(139, 90, 60, 0.15);
    transform: translateY(-1px);
}

.book-card[open] {
    background: rgba(255, 253, 248, 0.95);
}

.book-card summary {
    list-style: none;
    cursor: pointer;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-dark);
    font-size: 1.05rem;
}

.book-card summary::-webkit-details-marker {
    display: none;
}

.book-card summary span {
    transition: transform 0.2s ease;
    display: inline-block;
}

.book-card[open] summary span {
    transform: rotate(180deg);
}

.chapter-grid {
    margin-top: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 4px;
}

.chapter-chip {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 14px;
    background: rgba(255, 253, 248, 0.9);
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--text-dark);
    transition: all 0.2s ease;
    font-weight: 500;
    box-shadow: 0 1px 3px rgba(139, 90, 60, 0.1);
}

.chapter-chip:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(139, 90, 60, 0.05);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(139, 90, 60, 0.15);
}

.chapter-chip.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    box-shadow: 0 2px 8px rgba(139, 90, 60, 0.3);
}

.chapter-panel {
    display: flex;
    flex-direction: column;
    min-height: 600px;
}

.chapter-header {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border);
}

.chapter-label {
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--accent);
    font-size: 0.7rem;
    margin: 0 0 8px;
    font-weight: 700;
}

#chapterTitle {
    margin: 0;
    font-size: 2.2rem;
    font-weight: 600;
    color: var(--accent-dark);
    font-family: 'Georgia', serif;
}

#chapterSubtitle {
    margin: 6px 0 0;
    color: var(--text-muted);
    font-style: italic;
    font-size: 1rem;
}

.ghost-link {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 20px;
    background: transparent;
    font-weight: 600;
    color: var(--accent-dark);
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9rem;
}

.ghost-link:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.ghost-link:not(:disabled):hover {
    border-color: var(--accent);
    background: rgba(139, 90, 60, 0.05);
    transform: translateY(-1px);
}

.chapter-loading,
.chapter-error {
    border: 1px dashed var(--border);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    margin-top: 10px;
}

.chapter-error {
    border-color: #f2b6b2;
    color: #c0392b;
    background: #fff4f2;
}

.chapter-body {
    margin-top: 20px;
    padding: 24px 32px;
    display: flex;
    flex-direction: column;
    gap: 0;
    padding-right: 20px;
    background: rgba(255, 253, 248, 0.4);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.chapter-navigation {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 2px solid var(--border);
    justify-content: space-between;
}

.nav-button {
    flex: 1;
    padding: 14px 24px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: rgba(255, 253, 248, 0.9);
    color: var(--accent-dark);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: 'Georgia', serif;
}

.nav-button:hover:not(:disabled) {
    border-color: var(--accent);
    background: rgba(139, 90, 60, 0.08);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(139, 90, 60, 0.15);
}

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

.nav-button-primary:hover:not(:disabled) {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
}

.nav-button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background: rgba(139, 90, 60, 0.05);
}

.coffee-margin {
    margin-top: 28px;
    padding: 20px 24px;
    border-radius: 14px;
    border: 1px dashed var(--border);
    background: var(--verse-bg);
    display: flex;
    gap: 18px;
    align-items: center;
    box-shadow: 0 12px 30px var(--shadow);
}

.coffee-margin-text {
    flex: 1;
}

.coffee-margin-label {
    margin: 0 0 6px;
    font-size: 0.85rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.coffee-margin-verse {
    margin: 0;
    font-size: 1rem;
    font-style: italic;
    color: var(--text-dark);
}

.coffee-margin-verse strong {
    display: inline-block;
    margin-right: 6px;
    font-style: normal;
    color: var(--accent);
}

.coffee-margin-subtext {
    margin: 10px 0 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.coffee-margin-button {
    text-decoration: none;
    background: linear-gradient(135deg, #ffd86f, #fc6262);
    color: #1a1a1a;
    padding: 12px 22px;
    border-radius: 999px;
    font-weight: 600;
    box-shadow: 0 10px 25px rgba(252, 98, 98, 0.35);
    transition: transform 0.2s ease;
    white-space: nowrap;
}

.coffee-margin-button:hover {
    transform: translateY(-2px);
}

/* Beautiful scrollbar */
.chapter-body::-webkit-scrollbar {
    width: 10px;
}

.chapter-body::-webkit-scrollbar-track {
    background: rgba(139, 90, 60, 0.05);
    border-radius: 10px;
}

.chapter-body::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 10px;
    border: 2px solid rgba(255, 253, 248, 0.4);
}

.chapter-body::-webkit-scrollbar-thumb:hover {
    background: var(--accent-dark);
}

.verse-row {
    display: flex;
    gap: 20px;
    padding: 12px 0;
    position: relative;
    line-height: 1.9;
}

/* Special styling for first verse */
.verse-row:first-child .verse-text::first-letter {
    font-size: 3.5em;
    font-weight: 700;
    float: left;
    line-height: 0.85;
    margin: 0.08em 0.12em 0 0;
    color: var(--accent-dark);
    font-family: 'Georgia', serif;
}

.verse-number {
    font-weight: 700;
    color: var(--accent);
    font-size: 0.85rem;
    min-width: 40px;
    text-align: right;
    padding-top: 4px;
    font-family: 'Georgia', serif;
    opacity: 0.8;
}

.verse-text {
    flex: 1;
    font-size: 1.15rem;
    line-height: 1.9;
    color: var(--text-dark);
    font-family: 'Georgia', 'Times New Roman', serif;
    text-align: justify;
    hyphens: auto;
}

.chapter-loading,
.chapter-error {
    border: 1px dashed var(--border);
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    margin-top: 20px;
    background: rgba(255, 253, 248, 0.6);
}

.chapter-error {
    border-color: #c89477;
    color: #8b4513;
    background: rgba(200, 148, 119, 0.1);
}

.spinner {
    font-size: 2.5rem;
    animation: pulse 1.2s infinite ease-in-out;
}

@keyframes pulse {
    0% { opacity: 0.3; }
    50% { opacity: 1; }
    100% { opacity: 0.3; }
}

/* Two-column layout for very wide screens */
@media (min-width: 1600px) {
    .chapter-body {
        column-count: 2;
        column-gap: 40px;
        column-rule: 1px solid var(--border);
    }
    
    .verse-row {
        break-inside: avoid;
    }
}

@media (max-width: 900px) {
    .reader-main {
        grid-template-columns: 1fr;
    }

    .library-panel {
        position: relative;
        top: 0;
        max-height: 500px;
    }

    .library-list {
        max-height: 400px;
    }

    .chapter-body {
        max-height: none;
        padding: 20px;
        column-count: 1;
    }
    
    .verse-text {
        font-size: 1.1rem;
        text-align: left;
    }
    
    #chapterTitle {
        font-size: 1.8rem;
    }

    .chapter-navigation {
        flex-direction: column;
    }

    .nav-button {
        width: 100%;
    }

    .coffee-margin {
        flex-direction: column;
        align-items: stretch;
        gap: 14px;
    }

    .coffee-margin-button {
        width: 100%;
        text-align: center;
    }
}

/* Night Mode - Elegant dark reading experience */
body.night-mode {
    --gradient-start: #1a1614;
    --gradient-end: #2d2520;
    --panel-bg: rgba(40, 35, 30, 0.95);
    --accent: #d4a574;
    --accent-dark: #f0d0a0;
    --text-dark: #e8dcc9;
    --text-muted: #b09a7f;
    --border: rgba(212, 165, 116, 0.2);
    --verse-bg: rgba(40, 35, 30, 0.6);
    --shadow: rgba(0, 0, 0, 0.4);
}

body.night-mode::before {
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(212, 165, 116, 0.02) 2px, rgba(212, 165, 116, 0.02) 4px);
}

body.night-mode .verse-row:first-child .verse-text::first-letter {
    color: var(--accent-dark);
}

body.night-mode .book-card {
    background: rgba(40, 35, 30, 0.6);
}

body.night-mode .chapter-chip {
    background: rgba(40, 35, 30, 0.8);
}

body.night-mode .chapter-chip:hover {
    background: rgba(212, 165, 116, 0.15);
}

body.night-mode .chapter-body::-webkit-scrollbar-track {
    background: rgba(212, 165, 116, 0.1);
}

body.night-mode .library-list::-webkit-scrollbar-track {
    background: rgba(212, 165, 116, 0.1);
}

body.night-mode .library-list::-webkit-scrollbar-thumb {
    border-color: rgba(40, 35, 30, 0.6);
}

body.night-mode .chapter-loading {
    background: rgba(40, 35, 30, 0.6);
}

body.night-mode .chapter-error {
    border-color: #d4a574;
    color: #f0d0a0;
    background: rgba(212, 165, 116, 0.1);
}

body.night-mode .nav-button {
    background: rgba(40, 35, 30, 0.8);
}

body.night-mode .nav-button:hover:not(:disabled) {
    background: rgba(212, 165, 116, 0.15);
}

body.night-mode .nav-button-primary {
    background: var(--accent);
    color: var(--text-dark);
}

body.night-mode .nav-button-primary:hover:not(:disabled) {
    background: var(--accent-dark);
}

/* Resume Reading Banner */
.resume-banner {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: linear-gradient(135deg, rgba(139, 90, 60, 0.1), rgba(139, 90, 60, 0.05));
    border: 1px solid rgba(139, 90, 60, 0.2);
    border-radius: 10px;
    margin-bottom: 16px;
    animation: slideDown 0.3s ease;
    transition: opacity 0.3s ease;
}

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

.resume-text {
    flex: 1;
    font-size: 0.95rem;
    color: var(--text-dark);
}

.resume-btn {
    padding: 6px 14px;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: background 0.2s;
}

.resume-btn:hover {
    background: var(--accent-dark);
}

.resume-dismiss {
    background: none;
    border: none;
    font-size: 1.3rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
}

.resume-dismiss:hover {
    color: var(--text-dark);
}

body.night-mode .resume-banner {
    background: linear-gradient(135deg, rgba(212, 165, 116, 0.15), rgba(212, 165, 116, 0.08));
    border-color: rgba(212, 165, 116, 0.3);
}

body.night-mode .resume-text {
    color: var(--text-dark);
}

/* Version Dropdown */
.version-dropdown {
    position: relative;
    display: inline-block;
}

.version-btn {
    background: var(--panel-bg);
    border: 1px solid var(--border);
    color: var(--text-dark);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.version-btn:hover {
    background: rgba(139, 90, 60, 0.05);
    border-color: var(--accent);
}

.dropdown-arrow {
    font-size: 0.7em;
    opacity: 0.7;
    transition: transform 0.2s;
}

.version-dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.version-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 8px;
    background: var(--panel-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    min-width: 220px;
    z-index: 100;
    max-height: 300px;
    overflow-y: auto;
    padding: 6px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

.version-dropdown.open .version-menu {
    opacity: 1;
    visibility: visible;
}

.version-option {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    text-decoration: none;
    color: var(--text-dark);
    border-radius: 4px;
    transition: background 0.2s;
    cursor: pointer;
}

.version-option:hover {
    background: rgba(139, 90, 60, 0.08);
}

.version-option.active {
    background: var(--accent);
    color: #fff;
}

.version-code {
    font-weight: bold;
    font-size: 0.85em;
    text-transform: uppercase;
    min-width: 35px;
    text-align: center;
    background: rgba(0,0,0,0.05);
    padding: 2px 4px;
    border-radius: 4px;
}

.version-option.active .version-code {
    background: rgba(255,255,255,0.2);
}

.version-name {
    font-size: 0.9em;
    opacity: 0.9;
}

/* Night mode adjustments */
body.night-mode .version-menu {
    background: #1a1f2e;
    border-color: #2d3748;
}

body.night-mode .version-btn {
    background: #1a1f2e;
    border-color: #2d3748;
    color: #e2e8f0;
}

body.night-mode .version-option:hover {
    background: rgba(255, 255, 255, 0.1);
}

body.night-mode .version-option.active {
    background: var(--accent);
    color: #fff;
}