/* ═══════════════════════════════════════════════════
   Manga Reader — Main Stylesheet
   Mobile-first, dark mode default, responsive.
   ═══════════════════════════════════════════════════ */

/* ── CSS Variables (Dark Theme Default) ────────── */
:root {
    --bg: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #16213e;
    --text: #e0e0e0;
    --text-secondary: #999;
    --text-muted: #666;
    --accent: #e94560;
    --accent-hover: #ff6b81;
    --border: #2a2a4a;
    --card-bg: #1a1a2e;
    --card-hover: #1e1e36;
    --header-bg: rgba(15, 15, 26, 0.95);
    --button-bg: #2a2a4a;
    --button-hover: #3a3a5a;
    --radius: 8px;
    --max-width: 1200px;
    --reader-max-width: 800px;
}

/* ── Light Theme Override ──────────────────────── */
[data-theme="light"] {
    --bg: #fafafa;
    --bg-secondary: #fff;
    --bg-tertiary: #f0f0f0;
    --text: #222;
    --text-secondary: #555;
    --text-muted: #999;
    --border: #ddd;
    --card-bg: #fff;
    --card-hover: #f5f5f5;
    --header-bg: rgba(250, 250, 250, 0.95);
    --button-bg: #eee;
    --button-hover: #ddd;
}

/* ── Reset & Base ──────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, system-ui, sans-serif;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

img { max-width: 100%; height: auto; display: block; }

/* ── Skip Link ─────────────────────────────────── */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--accent);
    color: #fff;
    padding: 8px 16px;
    z-index: 1000;
    border-radius: 0 0 4px 0;
}
.skip-link:focus { top: 0; }

/* ── Site Header ───────────────────────────────── */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 16px;
    height: 48px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--text);
    white-space: nowrap;
    flex-shrink: 0;
}
.logo:hover { color: var(--accent); }

.header-nav {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: hidden;
    font-size: 0.9rem;
}

.header-nav a {
    color: var(--text-secondary);
    white-space: nowrap;
}
.header-nav a:hover { color: var(--text); }

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    overflow: hidden;
}
.breadcrumb .bc-sep { color: var(--text-muted); }
.breadcrumb .bc-current { color: var(--text); }

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    flex-shrink: 0;
}
.theme-toggle:hover { color: var(--text); background: var(--button-bg); }
[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="light"] .theme-icon-dark { display: none; }

/* ── Header Secondary Nav (legal links) ────────── */
.header-nav-secondary {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-left: 8px;
    flex-shrink: 0;
}
.header-nav-secondary a {
    color: var(--text-secondary);
    font-size: 0.8rem;
    white-space: nowrap;
}
.header-nav-secondary a:hover {
    color: var(--accent);
    text-decoration: underline;
}

/* ── Main Content ──────────────────────────────── */
#main-content {
    flex: 1;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 16px;
    width: 100%;
}

/* ── Footer ────────────────────────────────────── */
.site-footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border);
    padding: 32px 16px 28px;
    text-align: center;
    margin-top: auto;
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}
.footer-nav a {
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 500;
    text-underline-offset: 3px;
}
.footer-nav a:hover {
    color: var(--accent);
    text-decoration: underline;
}

.copyright {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

/* ═══════════════════════════════════════════════════
   SERIES PAGE — Two-column scrollable layout
   ═══════════════════════════════════════════════════ */

.series-page {
    max-width: var(--content-max-width, 1200px);
    margin: 0 auto;
    padding: 0 16px;
    position: relative;
}

/* ── Background Image Overlay ──────────────────── */
.series-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    pointer-events: none;
}
.series-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
}
.series-bg-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        180deg,
        rgba(0, 0, 0, 0.7) 0%,
        rgba(0, 0, 0, 0.85) 30%,
        rgba(0, 0, 0, 0.9) 60%,
        rgba(0, 0, 0, 1) 100%
    );
}

/* ── Two-column layout ──────────────────────────── */
.series-layout {
    display: flex;
    gap: 40px;
    padding: 20px 0;
    position: relative;
    z-index: 1;
}

/* ── Left Sidebar ───────────────────────────────── */
.series-sidebar {
    flex-shrink: 0;
    width: 280px;
}

.sidebar-cover-wrapper {
    margin-bottom: 16px;
}
.sidebar-cover {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 2/3;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: 0 4px 20px rgba(0,0,0,0.6);
}

.sidebar-title {
    font-size: 1.3rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 12px;
    color: var(--text);
}

.sidebar-btn {
    display: block;
    width: 100%;
    padding: 10px;
    text-align: center;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    transition: background 0.2s, transform 0.15s;
    cursor: pointer;
    text-decoration: none;
}
.sidebar-btn:hover {
    transform: scale(1.02);
}

.btn-read-first {
    background: var(--button-bg);
    color: var(--text);
}
.btn-read-first:hover {
    background: var(--button-hover);
    color: var(--text);
}

.btn-read-latest {
    background: var(--accent);
    color: #fff;
}
.btn-read-latest:hover {
    background: var(--accent-hover, color-mix(in srgb, var(--accent) 85%, white));
    color: #fff;
}

.sidebar-info-list {
    list-style: none;
    padding: 0;
    margin: 20px 0;
    font-size: 0.85rem;
}
.sidebar-info-list li {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    color: var(--text-secondary);
}
.sidebar-info-list li strong {
    color: var(--text);
}
.sidebar-info-list li.finished-badge span {
    color: #75cd2d;
    font-weight: 600;
}

.sidebar-description {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

/* ── Right Content (scrollable chapters) ─────────── */
.series-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.chapters-scroll-container {
    height: 75vh;
    overflow-y: auto;
    padding-right: 8px;
    scrollbar-width: thin;
    scrollbar-color: var(--accent) var(--bg-tertiary);
}
/* WebKit scrollbar */
.chapters-scroll-container::-webkit-scrollbar {
    width: 6px;
}
.chapters-scroll-container::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}
.chapters-scroll-container::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 3px;
}

/* ── Chapter Row ────────────────────────────────── */
.chapter-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    margin-bottom: 4px;
    background: var(--card-bg);
    border-radius: 6px;
    border: 1px solid var(--border);
    text-decoration: none;
    color: var(--text);
    transition: background 0.15s, border-color 0.15s;
    min-height: 64px;
}
.chapter-row:hover {
    background: var(--card-hover);
    border-color: var(--accent);
}

.chapter-row-thumb {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    border-radius: 4px;
    overflow: hidden;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
}
.chapter-row-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.thumb-placeholder {
    width: 100%;
    height: 100%;
    background: var(--bg-tertiary);
}

.chapter-row-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 2px;
}
.chapter-row-label {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.chapter-row-date {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ── Fire icon for new chapters ───────────────── */
.chapter-row-new {
    border-color: color-mix(in srgb, var(--accent) 40%, transparent);
    background: color-mix(in srgb, var(--accent) 8%, var(--card-bg));
}
.chapter-row-new:hover {
    background: color-mix(in srgb, var(--accent) 14%, var(--card-hover));
    border-color: var(--accent);
}

.fire-icon-inline {
    display: inline-block;
    vertical-align: middle;
    margin-left: 6px;
    flex-shrink: 0;
}
.fire-icon-inline g path:first-of-type {
    fill: #fff;
    filter: brightness(0.85);
}
.fire-icon-inline g path:nth-of-type(2) {
    fill: var(--accent, #e02020);
}
.fire-icon-inline g path:nth-of-type(3) {
    fill: var(--accent, #e02020);
    filter: brightness(0.8);
}

/* ── Unreleased chapter placeholder ────────────── */
.chapter-row.unreleased {
    opacity: 0.65;
    cursor: default;
    pointer-events: none;
    border-style: dashed;
    border-color: var(--border);
    background: var(--card-bg);
}
.unreleased-thumb {
    background: var(--bg-tertiary);
    border: 1px dashed var(--border);
    border-radius: 4px;
}

/* ── Status badges ─────────────────────────────── */
.sidebar-info-list li.ongoing-badge span {
    color: #4cc9f0;
    font-weight: 600;
}

/* ── Empty state ───────────────────────────────── */
.no-chapters {
    text-align: center;
    color: var(--text-muted);
    padding: 48px 16px;
    font-size: 1rem;
}

/* ── Responsive ─────────────────────────────────── */
@media (max-width: 768px) {
    .series-layout {
        flex-direction: column;
        gap: 20px;
    }
    .series-sidebar {
        width: 100%;
        display: flex;
        flex-wrap: wrap;
        gap: 12px;
        align-items: flex-start;
    }
    .sidebar-cover-wrapper {
        width: 120px;
        flex-shrink: 0;
    }
    .sidebar-cover {
        width: 120px;
    }
    .sidebar-title {
        flex: 1;
        text-align: left;
        font-size: 1.1rem;
        min-width: 160px;
    }
    .sidebar-btn {
        flex: 1 1 auto;
        font-size: 0.8rem;
        padding: 8px;
        min-width: 140px;
    }
    .sidebar-info-list {
        width: 100%;
        margin: 8px 0;
    }
    .sidebar-description {
        width: 100%;
    }
    
    .series-content {
        width: 100%;
    }
    .chapters-scroll-container {
        height: 55vh;
        padding-right: 0;
    }
    .chapter-row {
        padding: 8px 10px;
    }
    .chapter-row-label {
        font-size: 0.85rem;
    }
}

@media (max-width: 400px) {
    .series-page {
        padding: 0 8px;
    }
    .chapter-row-thumb {
        width: 40px;
        height: 40px;
    }
    .chapter-row-label {
        font-size: 0.8rem;
    }
}

/* ═══════════════════════════════════════════════════
   READER PAGE
   ═══════════════════════════════════════════════════ */

.reader-container {
    max-width: var(--reader-max-width);
    margin: 0 auto;
    position: relative;
}

/* ── Top Bar ────────────────────────────────────── */
.reader-topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transform: translateY(0);
    transition: transform 0.3s ease;
}

.reader-container.at-top .reader-topbar,
.reader-container.focus-mode .reader-topbar:not(.visible) {
    transform: translateY(-100%);
}

.reader-container.at-bottom .reader-topbar {
    transform: translateY(0);
}

.topbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 12px;
    height: 48px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.topbar-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: 4px;
    white-space: nowrap;
    font-family: inherit;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
}
.topbar-btn:hover { color: var(--text); background: var(--button-bg); }
.topbar-btn.disabled { opacity: 0.3; pointer-events: none; }

.chapter-selector {
    background: var(--bg-tertiary);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 6px 8px;
    font-size: 0.85rem;
    max-width: 200px;
    font-family: inherit;
}

.topbar-nav {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.page-counter {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
    min-width: 80px;
    text-align: center;
}

.topbar-actions {
    display: flex;
    gap: 4px;
}

/* ── Chapter Title ──────────────────────────────── */
.chapter-title-bar {
    text-align: center;
    padding: 24px 16px 16px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 8px;
}

.chapter-heading {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}
.chapter-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ── Page Images ────────────────────────────────── */
.reader-pages {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-wrapper {
    position: relative;
    width: 100%;
    margin-bottom: 4px;
}

.manga-page {
    width: 100%;
    height: auto;
    display: block;
    will-change: transform;
    min-height: 200px;
    background: var(--bg-tertiary);
}

.page-number-label {
    position: absolute;
    bottom: 4px;
    right: 4px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 0.65rem;
    padding: 2px 8px;
    border-radius: 4px;
    pointer-events: none;
}

/* ── Bottom Bar (Mobile) ────────────────────────── */
.reader-bottombar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 200;
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    border-top: 1px solid var(--border);
    padding: 0;
}
.bottombar-inner {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 48px;
    padding: 0 12px;
}
.bottombar-btn {
    background: var(--button-bg);
    color: var(--text);
    border: none;
    font-size: 0.85rem;
    cursor: pointer;
    padding: 8px 16px;
    border-radius: 4px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    min-width: 44px;
    justify-content: center;
}
.bottombar-btn:hover { background: var(--button-hover); }
.bottombar-btn.disabled { opacity: 0.3; pointer-events: none; }

.page-indicator {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ── Touch Zones ────────────────────────────────── */
.touch-zone {
    position: fixed;
    top: 0;
    bottom: 0;
    z-index: 50;
    width: 33.33%;
}
.touch-left { left: 0; }
.touch-right { right: 0; }
.touch-center { left: 33.33%; }
/* At top of page, disable left zone (iOS Safari back gesture).
   At bottom, disable right zone (iOS Safari forward gesture). */
.reader-container.at-top .touch-left { pointer-events: none; }
.reader-container.at-bottom .touch-right { pointer-events: none; }

/* ── End Nav ────────────────────────────────────── */
.reader-end-nav {
    display: flex;
    justify-content: center;
    gap: 12px;
    padding: 24px 16px;
    margin-top: 16px;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.end-nav-btn {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    background: var(--button-bg);
    border-radius: var(--radius);
    color: var(--text);
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.15s;
    min-height: 44px;
}
.end-nav-btn:hover { background: var(--button-hover); color: var(--text); }
.end-nav-btn.home-btn { background: var(--accent); color: #fff; }
.end-nav-btn.home-btn:hover { background: var(--accent-hover); }

/* Legal links at end of chapter */
.reader-legal-nav {
    text-align: center;
    padding: 16px 16px 8px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}
.reader-legal-nav a {
    color: var(--text-secondary);
}
.reader-legal-nav a:hover {
    color: var(--accent);
    text-decoration: underline;
}
.reader-legal-nav .legal-sep {
    margin: 0 8px;
    color: var(--text-muted);
}

/* ── Ad Slots ───────────────────────────────────── */
.ad-slot {
    text-align: center;
    margin: 16px auto;
    max-width: 800px;
    overflow: hidden;
}

.ad-preview {
    opacity: 0.7;
    transition: opacity 0.2s;
}
.ad-preview:hover { opacity: 1; }

/* ═══════════════════════════════════════════════════
   LEGAL PAGES
   ═══════════════════════════════════════════════════ */

.legal-page {
    max-width: 700px;
    margin: 0 auto;
    padding: 24px 0;
}
.legal-page h1 {
    font-size: 1.5rem;
    margin-bottom: 4px;
}
.legal-page h2 {
    font-size: 1.1rem;
    margin-top: 24px;
    margin-bottom: 8px;
    color: var(--text);
}
.legal-page p, .legal-page li {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.7;
    margin-bottom: 8px;
}
.legal-page ul {
    padding-left: 20px;
    margin-bottom: 8px;
}
.legal-page em { color: var(--text-muted); }

/* ═══════════════════════════════════════════════════
   ERROR PAGES
   ═══════════════════════════════════════════════════ */

.error-page {
    text-align: center;
    padding: 64px 16px;
}
.error-page h1 {
    font-size: 2rem;
    color: var(--accent);
    margin-bottom: 12px;
}
.error-page p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}
.error-nav a {
    display: inline-block;
    padding: 12px 24px;
    background: var(--accent);
    color: #fff;
    border-radius: var(--radius);
    font-weight: 500;
}
.error-nav a:hover { background: var(--accent-hover); color: #fff; }

/* ── Empty State ────────────────────────────────── */
.home-empty {
    text-align: center;
    padding: 64px 16px;
}
.home-empty h1 { font-size: 2rem; margin-bottom: 8px; }
.home-empty p { color: var(--text-secondary); }
.empty-state {
    margin-top: 24px;
    padding: 32px;
    background: var(--card-bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

/* ═══════════════════════════════════════════════════
   RESPONSIVE — Desktop (>1024px)
   ═══════════════════════════════════════════════════ */

@media (min-width: 1024px) {
    .reader-bottombar { display: none; }
    .touch-zone { display: none; }
    .reader-container { padding-top: 48px; }
    .reader-topbar { position: fixed; }
    .series-cover img { width: 250px; }
    .chapter-thumb { width: 100px; height: 142px; }
}

/* ═══════════════════════════════════════════════════
   RESPONSIVE — Mobile (<768px)
   ═══════════════════════════════════════════════════ */

@media (max-width: 767px) {
    .series-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .series-cover img { width: 160px; }
    .series-meta { justify-content: center; }
    
    .chapter-selector { max-width: 130px; }
    .topbar-nav .page-counter { display: none; }
    
    .reader-topbar {
        top: auto;
        bottom: 48px;
    }
    .reader-container.at-top .reader-topbar { transform: translateY(100%); }
    
    .reader-container { padding-bottom: 96px; } /* space for bottom bars */
}

/* ── Print ──────────────────────────────────────── */
@media print {
    .site-header, .reader-topbar, .reader-bottombar, .touch-zone,
    .reader-end-nav, .site-footer, .ad-slot, .skip-link { display: none !important; }
    .manga-page { page-break-after: always; }
    body { background: #fff; color: #000; }
}