/* ========== РЕЖИМ ЧТЕНИЯ ========== */
.reader-mode {
    --bg-primary: #0B0E14;
    --bg-secondary: #131820;
    --bg-tertiary: #1A2030;
    --text-primary: #E8ECF1;
    --text-secondary: #8B95A5;
    --text-muted: #555E6B;
    --accent: #00C8E0;
    --accent-hover: #00E5FF;
    --accent-glow: rgba(0, 200, 224, 0.15);
    --border: rgba(255, 255, 255, 0.08);
    --radius: 8px;
    --radius-lg: 14px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --font-heading: 'Exo 2', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-reading: 'Source Serif 4', serif;
    background: var(--bg-primary);
}

.reader-layout {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========== ПАНЕЛЬ ИНСТРУМЕНТОВ ========== */
.reader-toolbar {
    position: sticky;
    top: 0;
    z-index: 100;
    height: 48px;
    background: rgba(11, 14, 20, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 16px;
    gap: 12px;
}

.reader-toolbar .btn-back {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.85rem;
    padding: 6px 14px;
    border-radius: var(--radius);
    text-decoration: none;
    transition: all 0.2s;
    white-space: nowrap;
}

.reader-toolbar .btn-back:hover {
    color: var(--text-primary);
    border-color: var(--accent);
    background: var(--bg-tertiary);
}

.reader-toolbar .chapter-title {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
    flex: 1;
}

.reader-toolbar .btn-settings {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 6px 12px;
    border-radius: var(--radius);
    transition: all 0.2s;
    white-space: nowrap;
}

.reader-toolbar .btn-settings:hover {
    color: var(--text-primary);
    border-color: var(--accent);
    background: var(--bg-tertiary);
}

/* ========== ПАНЕЛЬ НАСТРОЕК ========== */
/* Панель настроек — закреплена внизу */
.reader-settings {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 99;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 12px 20px;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
}

.reader-settings.open {
    display: flex;
}

.reader-settings label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.reader-settings label span:first-child {
    min-width: 85px;
    text-align: right;
}

.reader-settings input[type="range"] {
    width: 90px;
    accent-color: var(--accent);
    cursor: pointer;
}

.reader-settings .range-value {
    color: var(--accent);
    font-weight: 600;
    min-width: 38px;
    text-align: left;
    font-size: 0.8rem;
}

.reader-settings .btn-theme {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.85rem;
    font-family: var(--font-body);
    transition: all 0.2s;
    white-space: nowrap;
}

.reader-settings .btn-theme:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* Панель содержания */
.toc-panel {
    position: fixed;
    top: 0;
    right: -320px;
    width: 300px;
    max-width: 85vw;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    z-index: 200;
    overflow-y: auto;
    padding: 20px;
    transition: right 0.3s ease;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
}

.toc-panel.open {
    right: 0;
}

.toc-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.toc-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 4px 8px;
    border-radius: var(--radius);
    transition: all 0.2s;
}

.toc-close:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.toc-panel ol {
    list-style: decimal;
    padding-left: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toc-panel a {
    color: var(--accent);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.toc-panel a:hover {
    color: var(--accent-hover);
}

/* Оверлей при открытом содержании */
.toc-panel.open::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: -1;
}

/* Адаптив */
@media (max-width: 768px) {
    .toc-panel {
        width: 100%;
        max-width: 100%;
        right: -100%;
    }
}


/* ========== КОНТЕНТ ЧТЕНИЯ ========== */
.reader-content {
    flex: 1;
    width: 100%;
    margin: 40px auto 60px;
    padding: 0 20px;
    font-family: var(--font-reading);
    color: var(--text-primary);
    margin-left: auto;
    margin-right: auto;
	transition: max-width 0.3s ease, padding 0.3s ease, margin 0.3s ease;
}

.reader-content h1 {
    font-family: var(--font-heading);
    font-size: 2rem;
    text-align: center;
    margin-bottom: 40px;
    color: var(--text-primary);
}

.reader-content h2 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    text-align: center;
    margin-bottom: 40px;
    color: var(--text-primary);
}

.reader-content p {
    margin-bottom: 1.2em;
    text-indent: 1.5em;
}

.reader-content p:first-of-type {
    text-indent: 1.5em;
}

.reader-content em {
    font-style: italic;
}

.reader-content strong {
    font-weight: 600;
}

/* ========== НАВИГАЦИЯ ВНИЗУ ========== */
.reader-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    width: 100%;
    margin: 0 auto 40px;
    padding: 0 20px;
    text-align: center;
}

/* ========== ПРОГРЕСС-БАР ========== */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: var(--accent);
    z-index: 200;
    width: 0;
    transition: width 0.1s linear;
}

/* ========== СВЕТЛАЯ ТЕМА ========== */
.reader-mode[data-reader-theme="light"],
body.reader-mode[data-reader-theme="light"] {
    --bg-primary: #F8F6F0;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #F0EDE5;
    --text-primary: #1A1D2E;
    --text-secondary: #5A6070;
    --text-muted: #9AA0B0;
    --border: rgba(0, 0, 0, 0.08);
}

body.reader-mode[data-reader-theme="light"] .reader-toolbar {
    background: rgba(248, 246, 240, 0.9);
}

html[data-reader-theme="light"] .reader-toolbar {
    background: rgba(248, 246, 240, 0.9);
}

.reader-mode[data-reader-theme="light"] .reader-toolbar {
    background: rgba(248, 246, 240, 0.9);
}

.chapter-toc {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 16px 20px;
    margin-bottom: 32px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;          /* ← заголовок "Содержание" по центру */
}

.chapter-toc ol {
    margin-top: 12px;
    padding-left: 0;             /* ← убираем левый отступ */
    list-style-position: inside; /* ← маркеры внутри */
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;         /* ← пункты по центру */
    text-align: center;
}


/* Единый стиль для всех кнопок в тулбаре */
.reader-toolbar .btn-toc-toggle,
.reader-toolbar .btn-settings,
.reader-toolbar .btn-download {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.1rem;
    padding: 6px 12px;
    border-radius: var(--radius);
    transition: all 0.2s;
    white-space: nowrap;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 34px;
}

.reader-toolbar .btn-toc-toggle:hover,
.reader-toolbar .btn-settings:hover,
.reader-toolbar .btn-download:hover {
    color: var(--text-primary);
    border-color: var(--accent);
    background: var(--bg-tertiary);
}

/* ========== АДАПТИВ ========== */

@media (max-width: 768px) {
    .reader-toolbar {
        height: 44px;
        padding: 0 10px;
        gap: 8px;
        justify-content: center;
    }

    .reader-toolbar .btn-back {
        font-size: 0.8rem;
        padding: 5px 10px;
    }

    .reader-toolbar .chapter-title {
        font-size: 0.75rem;
        flex: 1;
        text-align: center;
    }

    .reader-toolbar .btn-settings {
        font-size: 1rem;
        padding: 5px 10px;
    }

    .reader-settings {
        padding: 12px 16px;
        gap: 8px;
        flex-direction: column;
        align-items: center;
    }

    .reader-settings label {
        width: 100%;
        justify-content: center;
        gap: 6px;
        font-size: 0.8rem;
    }

    .reader-settings label span:first-child {
        min-width: 70px;
        text-align: right;
    }

    .reader-settings input[type="range"] {
        width: 80px;
    }

    .reader-settings .btn-theme {
        width: 100%;
        text-align: center;
        padding: 10px;
        margin-top: 4px;
    }

    .reader-content {
        margin: 24px auto 40px;
        padding: 0 16px;
        margin-left: auto;
        margin-right: auto;
    }

    .reader-content h1 {
        font-size: 1.5rem;
        margin-bottom: 28px;
    }

    .reader-content h2 {
        font-size: 1.2rem;
    }

    .reader-content p {
        text-indent: 1em;
        margin-bottom: 1em;
    }

    .reader-nav {
        flex-direction: column;
        gap: 8px;
        padding: 0 16px;
        align-items: center;
    }

    .reader-nav .btn {
        width: 100%;
        max-width: 300px;
        text-align: center;
        justify-content: center;
    }
}

@media (max-width: 400px) {
    .reader-content {
        padding: 0 12px;
    }

    .reader-content h1 {
        font-size: 1.3rem;
    }

    .reader-settings label span:first-child {
        min-width: 60px;
        font-size: 0.75rem;
    }

    .reader-settings input[type="range"] {
        width: 60px;
    }

    .reader-nav .btn {
        max-width: 100%;
    }
}