/* Reading Page Styles */
body.reading-mode {
    background: var(--bg-primary);
}

/* Reading Header */
.reading-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: linear-gradient(180deg, var(--bg-primary) 0%, rgba(10, 10, 12, 0.95) 100%);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-left,
.header-right {
    flex: 1;
}

.header-center {
    flex: 2;
    text-align: center;
}

.back-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
}

.back-btn svg {
    width: 20px;
    height: 20px;
}

.back-btn:hover {
    color: var(--accent-gold);
}

.chapter-title {
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 2px;
    color: var(--text-primary);
}

.settings-btn {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    transition: var(--transition-smooth);
}

.settings-btn svg {
    width: 22px;
    height: 22px;
}

.settings-btn:hover {
    color: var(--accent-gold);
}

/* Settings Panel */
.settings-panel {
    position: fixed;
    top: 70px;
    right: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 24px;
    width: 280px;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-smooth);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.settings-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.settings-group {
    margin-bottom: 24px;
}

.settings-group:last-child {
    margin-bottom: 0;
}

.settings-group label {
    display: block;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.font-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.font-btn {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.font-btn:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.font-size-display {
    font-size: 1rem;
    color: var(--text-primary);
    min-width: 50px;
    text-align: center;
}

.font-family-options,
.theme-options,
.line-height-options {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.font-family-btn,
.theme-btn,
.line-height-btn {
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.font-family-btn:hover,
.theme-btn:hover,
.line-height-btn:hover {
    border-color: var(--accent-gold);
}

.font-family-btn.active,
.theme-btn.active,
.line-height-btn.active {
    background: var(--accent-gold);
    border-color: var(--accent-gold);
    color: var(--bg-primary);
}

.theme-btn {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 50%;
}

/* Reading Container */
.reading-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 100px 20px 60px;
    min-height: 100vh;
}

.chapter-content {
    font-size: var(--reader-font-size, 18px);
    line-height: var(--reader-line-height, 1.8);
    color: var(--reader-text-color, var(--text-primary));
}

.chapter-content p {
    margin-bottom: 1.5em;
    text-indent: 2em;
}

.chapter-content p:first-of-type {
    text-indent: 0;
}

.chapter-content p:first-of-type::first-letter {
    font-family: var(--font-display);
    font-size: 3.5em;
    float: left;
    line-height: 0.8;
    margin-right: 0.15em;
    margin-top: 0.1em;
    color: var(--accent-gold);
}

/* Theme Variants */
body.theme-sepia {
    --bg-primary: #f4ecd8;
    --bg-secondary: #ebe3d1;
    --text-primary: #3d3426;
    --text-secondary: #5c5040;
    --border-color: #d4c9b5;
}

body.theme-sepia .chapter-content p:first-of-type::first-letter {
    color: var(--accent-red);
}

body.theme-light {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --border-color: #e0e0e0;
}

body.theme-light .chapter-content p:first-of-type::first-letter {
    color: var(--accent-red);
}

/* Chapter Navigation */
.chapter-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.nav-prev,
.nav-next {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
    padding: 12px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.nav-prev:hover,
.nav-next:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
}

.nav-prev.disabled,
.nav-next.disabled {
    opacity: 0.3;
    pointer-events: none;
}

.nav-prev svg,
.nav-next svg {
    width: 20px;
    height: 20px;
}

.chapter-dropdown {
    position: relative;
}

.dropdown-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.dropdown-btn:hover {
    border-color: var(--accent-gold);
}

.dropdown-btn svg {
    width: 18px;
    height: 18px;
    transition: var(--transition-smooth);
}

.dropdown-btn.active svg {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 200px;
    max-height: 300px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
    margin-bottom: 8px;
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.3);
}

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

.dropdown-menu a {
    display: block;
    padding: 12px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
    border-bottom: 1px solid var(--border-color);
}

.dropdown-menu a:last-child {
    border-bottom: none;
}

.dropdown-menu a:hover {
    background: var(--bg-tertiary);
    color: var(--accent-gold);
}

.dropdown-menu a.active {
    color: var(--accent-gold);
    background: var(--bg-tertiary);
}

/* FAB Container */
.fab-container {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 999;
}

.fab-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.fab-btn svg {
    width: 24px;
    height: 24px;
}

.fab-btn:hover {
    border-color: var(--accent-gold);
    color: var(--accent-gold);
    transform: scale(1.05);
}

/* TOC Modal */
.toc-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-smooth);
}

.toc-modal.active {
    opacity: 1;
    visibility: visible;
}

.toc-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(5px);
}

.toc-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow: hidden;
    transform: scale(0.9);
    transition: var(--transition-smooth);
}

.toc-modal.active .toc-content {
    transform: scale(1);
}

.toc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.toc-header h2 {
    font-family: var(--font-display);
    font-size: 1.2rem;
    letter-spacing: 3px;
    color: var(--accent-gold-light);
}

.toc-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    transition: var(--transition-smooth);
}

.toc-close svg {
    width: 24px;
    height: 24px;
}

.toc-close:hover {
    color: var(--accent-gold);
}

.toc-list {
    list-style: none;
    max-height: 60vh;
    overflow-y: auto;
    padding: 16px 0;
}

.toc-list li {
    border-bottom: 1px solid var(--border-color);
}

.toc-list li:last-child {
    border-bottom: none;
}

.toc-list a {
    display: block;
    padding: 16px 24px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 1rem;
    transition: var(--transition-smooth);
}

.toc-list a:hover {
    background: var(--bg-tertiary);
    color: var(--accent-gold);
}

.toc-list a.active {
    color: var(--accent-gold);
    background: var(--bg-tertiary);
    border-left: 3px solid var(--accent-gold);
}

/* Reading Footer */
.reading-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 40px 20px;
    margin-top: 40px;
}

.reading-footer .footer-content {
    max-width: 800px;
    text-align: center;
}

.reading-footer .footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 20px;
}

.reading-footer .footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: var(--transition-smooth);
}

.reading-footer .footer-links a:hover {
    color: var(--accent-gold);
}

.reading-footer p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Mobile Responsive - Reading */
@media (max-width: 768px) {
    .reading-header {
        padding: 10px 16px;
    }

    .chapter-title {
        font-size: 0.85rem;
        letter-spacing: 1px;
    }

    .back-btn span {
        display: none;
    }

    .settings-panel {
        right: 10px;
        left: 10px;
        width: auto;
    }

    .reading-container {
        padding: 80px 20px 40px;
    }

    .chapter-nav {
        flex-wrap: wrap;
        gap: 12px;
    }

    .nav-prev,
    .nav-next {
        flex: 1;
        justify-content: center;
    }

    .chapter-dropdown {
        order: -1;
        width: 100%;
    }

    .dropdown-btn {
        width: 100%;
        justify-content: center;
    }

    .dropdown-menu {
        left: 0;
        right: 0;
        transform: none;
    }

    .fab-container {
        bottom: 120px;
        right: 20px;
    }

    .fab-btn {
        width: 44px;
        height: 44px;
    }

    .reading-footer .footer-links {
        flex-direction: column;
        gap: 12px;
    }
}

/* Scroll Progress */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: var(--accent-gold);
    z-index: 1001;
    transition: width 0.1s ease;
}


/* 悬浮下载条 */
.sticky-download-bar {
    position: fixed; bottom: 0; left: 0; width: 100%;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(0,0,0,0.1);
    padding: 15px;
    z-index: 90;
    box-shadow: 0 -5px 15px rgba(0,0,0,0.05);
}
.download-content {
    max-width: 800px; margin: 0 auto;
    display: flex; justify-content:none; align-items: center;
}
.cta-download-btn {
    background: linear-gradient(135deg, #FF512F 0%, #DD2476 100%);
    color: white; border: none;
    padding: 10px 25px; border-radius: 50px;
    font-weight: bold; cursor: pointer;
    display: flex; align-items: center;
    box-shadow: 0 4px 10px rgba(221, 36, 118, 0.3);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}