/**
 * Zibll 漫画阅读器 - 前端样式
 */

/* ===== CSS Variables ===== */
:root {
    --manga-bg: #f8f8fa;
    --manga-surface: #ffffff;
    --manga-primary: #e94560;
    --manga-primary-light: rgba(233, 69, 96, 0.08);
    --manga-primary-medium: rgba(233, 69, 96, 0.15);
    --manga-text: #1a1a2e;
    --manga-text-secondary: #555;
    --manga-muted: #999;
    --manga-border: #e8e8ed;
    --manga-header-h: 52px;
    --manga-toolbar-h: 54px;
    --manga-zibll-nav-h: 50px;
    --manga-sidebar-w: 320px;
    --manga-reader-max-w: 100%;
    --manga-radius: 10px;
    --manga-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --manga-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* Dark theme */
.dark-theme,
[data-theme="dark"] {
    --manga-bg: #0f0f1a;
    --manga-surface: #1a1a2e;
    --manga-text: #eaeaea;
    --manga-text-secondary: #aaa;
    --manga-muted: #666;
    --manga-border: #2a2a3e;
    --manga-primary-light: rgba(233, 69, 96, 0.1);
    --manga-primary-medium: rgba(233, 69, 96, 0.18);
}

/* ===== Reader Container ===== */
.zibll-manga-reader {
    position: relative;
    width: 100%;
    max-width: var(--manga-reader-max-w);
    margin: 0;
    border-radius: var(--manga-radius);
    overflow: hidden;
    background: var(--manga-bg);
    color: var(--manga-text);
    font-family: var(--manga-font);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: background var(--manga-transition), color var(--manga-transition);
    line-height: 1.6;
}

.zibll-manga-reader.is-fullscreen {
    max-width: none;
    margin: 0;
    border-radius: 0;
    box-shadow: none;
}

/* ===== Header ===== */
.manga-header {
    position: sticky;
    top: var(--manga-zibll-nav-h);
    z-index: 20;
    height: var(--manga-header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    background: var(--manga-surface);
    border-bottom: 1px solid var(--manga-border);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    backdrop-filter: blur(16px) saturate(180%);
    transition: background var(--manga-transition), border-color var(--manga-transition);
}

.manga-header-left,
.manga-header-right {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
}

.manga-header-center {
    flex: 1;
    text-align: center;
    font-weight: 600;
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 0 12px;
    color: var(--manga-text);
}

/* ===== Buttons ===== */
.manga-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 10px;
    background: transparent;
    color: var(--manga-text-secondary);
    cursor: pointer;
    transition: background 0.2s, color 0.2s, transform 0.15s;
    padding: 0;
    font-size: 14px;
    line-height: 1;
    -webkit-tap-highlight-color: transparent;
}

.manga-btn:hover {
    background: var(--manga-primary-light);
    color: var(--manga-primary);
}

.manga-btn:active {
    transform: scale(0.92);
}

.manga-btn:disabled {
    opacity: 0.25;
    cursor: not-allowed;
    pointer-events: none;
}

.manga-btn svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* ===== Sidebar ===== */
.manga-sidebar {
    position: fixed;
    top: 0;
    left: calc(-1 * var(--manga-sidebar-w) - 30px);
    width: var(--manga-sidebar-w);
    height: 100vh;
    height: 100dvh;
    background: var(--manga-surface);
    z-index: 1000;
    transition: left var(--manga-transition);
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    box-shadow: 4px 0 30px rgba(0, 0, 0, 0);
}

.manga-sidebar.open {
    left: 0;
    box-shadow: 4px 0 30px rgba(0, 0, 0, 0.12);
}

.manga-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 20px 16px;
    border-bottom: 1px solid var(--manga-border);
    position: sticky;
    top: 0;
    background: var(--manga-surface);
    z-index: 1;
}

.manga-sidebar-header h3 {
    margin: 0;
    font-size: 17px;
    font-weight: 700;
    color: var(--manga-text);
}

.manga-sidebar-count {
    font-size: 13px;
    color: var(--manga-muted);
    background: var(--manga-bg);
    padding: 3px 10px;
    border-radius: 20px;
    font-weight: 500;
}

/* Chapter list - grid layout with thumbnails */
.manga-chapter-list {
    list-style: none;
    margin: 0;
    padding: 12px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
}

.manga-chapter-item {
    display: flex;
    align-items: center;
    padding: 12px 14px;
    cursor: pointer;
    transition: background 0.15s, transform 0.15s, box-shadow 0.15s;
    gap: 14px;
    border-radius: 10px;
    -webkit-user-select: none;
    user-select: none;
    position: relative;
    border: 1px solid transparent;
}

.manga-chapter-item:hover {
    background: var(--manga-primary-light);
    border-color: var(--manga-primary-medium);
    transform: translateX(2px);
}

.manga-chapter-item.active {
    background: var(--manga-primary-light);
    border-color: var(--manga-primary);
    box-shadow: 0 2px 8px rgba(233, 69, 96, 0.12);
}

.manga-chapter-num {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--manga-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
    color: var(--manga-text-secondary);
    transition: background 0.2s, color 0.2s, border-radius 0.2s;
    border: 1px solid var(--manga-border);
}

.manga-chapter-item.active .manga-chapter-num {
    background: var(--manga-primary);
    color: #fff;
    border-color: var(--manga-primary);
    border-radius: 50%;
}

.manga-chapter-title {
    flex: 1;
    font-size: 14px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--manga-text);
    transition: color 0.2s;
    font-weight: 500;
}

.manga-chapter-item.active .manga-chapter-title {
    color: var(--manga-primary);
    font-weight: 600;
}

.manga-chapter-images-count {
    font-size: 12px;
    color: var(--manga-muted);
    flex-shrink: 0;
    background: var(--manga-bg);
    padding: 2px 8px;
    border-radius: 6px;
    font-weight: 500;
}

/* ===== Sidebar Overlay ===== */
.manga-sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--manga-transition), visibility var(--manga-transition);
    -webkit-tap-highlight-color: transparent;
}

.manga-sidebar-overlay.open {
    opacity: 1;
    visibility: visible;
}

/* ===== Content ===== */
.manga-content {
    padding: 0;
}

/* ===== Chapter Block ===== */
.manga-chapter {
    margin: 0;
}

.manga-chapter-title-bar {
    text-align: center;
    padding: 32px 16px 24px;
}

.manga-chapter-title-bar h2 {
    font-size: 18px;
    font-weight: 700;
    margin: 0;
    color: var(--manga-text);
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.manga-chapter-title-bar h2::before,
.manga-chapter-title-bar h2::after {
    content: '';
    width: 32px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--manga-primary), transparent);
    border-radius: 1px;
}

/* ===== Images ===== */
.manga-images-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 0;
}

.manga-image-wrapper {
    position: relative;
    width: 100%;
    line-height: 0;
    overflow: hidden;
    background: var(--manga-bg);
}

/* Loading placeholder with shimmer animation */
.manga-image-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        110deg,
        var(--manga-bg) 30%,
        var(--manga-border) 50%,
        var(--manga-bg) 70%
    );
    background-size: 200% 100%;
    animation: mangaShimmer 1.8s ease-in-out infinite;
    z-index: 1;
    transition: opacity 0.4s;
}

.manga-image-wrapper.loaded::before {
    opacity: 0;
    pointer-events: none;
}

@keyframes mangaShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.manga-image {
    width: 100%;
    height: auto;
    display: block;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.manga-image.loaded {
    opacity: 1;
}

/* Already loaded images (no data-src) */
.manga-image:not([data-src]) {
    opacity: 1;
}

.manga-page-number {
    position: absolute;
    bottom: 12px;
    right: 12px;
    background: rgba(0, 0, 0, 0.55);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    color: #fff;
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 12px;
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
    font-weight: 500;
    z-index: 2;
}

.manga-image-wrapper:hover .manga-page-number {
    opacity: 1;
}

/* ===== Chapter End ===== */
.manga-chapter-end {
    text-align: center;
    padding: 36px 16px;
    color: var(--manga-muted);
    font-size: 13px;
    margin: 0 20px;
    position: relative;
}

.manga-chapter-end::before {
    content: '';
    display: block;
    width: 40px;
    height: 1px;
    background: var(--manga-border);
    margin: 0 auto 12px;
}

/* ===== End Banner ===== */
.manga-end-banner {
    text-align: center;
    padding: 48px 20px 36px;
    color: var(--manga-muted);
}

.manga-end-banner p {
    font-size: 15px;
    margin: 0;
    font-weight: 500;
}

.manga-end-banner::before {
    content: '\2665';
    display: block;
    font-size: 24px;
    color: var(--manga-primary);
    margin-bottom: 12px;
    animation: mangaHeartbeat 1.5s ease-in-out infinite;
}

@keyframes mangaHeartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

/* ===== Toolbar ===== */
.manga-toolbar {
    position: sticky;
    bottom: 0;
    z-index: 20;
    height: var(--manga-toolbar-h);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 0 16px;
    background: var(--manga-surface);
    border-top: 1px solid var(--manga-border);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    backdrop-filter: blur(16px) saturate(180%);
    transition: background var(--manga-transition), border-color var(--manga-transition);
}

.manga-progress-info {
    position: absolute;
    left: 16px;
    font-size: 12px;
    color: var(--manga-muted);
    font-weight: 500;
    font-variant-numeric: tabular-nums;
}

.manga-toolbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.manga-toolbar .manga-btn {
    width: auto;
    padding: 0 16px;
    height: 36px;
    font-size: 13px;
    font-weight: 500;
    border-radius: 8px;
    color: var(--manga-text);
    gap: 6px;
    border: 1px solid var(--manga-border);
}

.manga-toolbar .manga-btn svg {
    width: 16px;
    height: 16px;
}

.manga-toolbar .manga-btn:not(:disabled):hover {
    background: var(--manga-primary);
    color: #fff;
    border-color: var(--manga-primary);
}

.manga-chapter-indicator {
    font-size: 13px;
    color: var(--manga-muted);
    font-variant-numeric: tabular-nums;
    min-width: 60px;
    text-align: center;
    font-weight: 500;
}

/* ===== Reading Modes ===== */
.mode-scroll .manga-images-container {
    gap: 2px;
}

.mode-strip .manga-images-container {
    gap: 0;
}

.mode-strip .manga-image-wrapper {
    margin-bottom: -2px;
}

.mode-strip .manga-page-number {
    display: none;
}

/* ===== Animations ===== */
@keyframes mangaFadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.manga-chapter {
    animation: mangaFadeIn 0.3s ease;
}

/* ===== Print ===== */
@media print {
    .manga-header,
    .manga-toolbar,
    .manga-sidebar,
    .manga-sidebar-overlay,
    .manga-page-number {
        display: none !important;
    }
    .zibll-manga-reader {
        max-width: none;
        margin: 0;
        box-shadow: none;
    }
    .manga-image {
        opacity: 1 !important;
        page-break-inside: avoid;
    }
}

/* ===== Mobile ===== */
@media (max-width: 768px) {
    :root {
        --manga-sidebar-w: 280px;
        --manga-header-h: 48px;
        --manga-toolbar-h: 52px;
    }

    .zibll-manga-reader {
        max-width: none;
        border-radius: 0;
        box-shadow: none;
    }

    .manga-header {
        top: 0;
        padding: 0 12px;
    }

    .manga-page-number {
        opacity: 1;
    }

    .manga-toolbar {
        gap: 8px;
    }

    .manga-progress-info {
        display: none;
    }

    .manga-chapter-title-bar {
        padding: 24px 12px 16px;
    }

    .manga-chapter-title-bar h2 {
        font-size: 16px;
        gap: 8px;
    }

    .manga-chapter-title-bar h2::before,
    .manga-chapter-title-bar h2::after {
        width: 24px;
    }

    .manga-end-banner {
        padding: 36px 16px 28px;
    }

    /* Swipe hint */
    .manga-chapter-end::after {
        content: '\2190 \u5DE6\u53F3\u6ED1\u52A8\u5207\u6362\u7AE0\u8282 \u2192';
        display: block;
        font-size: 12px;
        color: var(--manga-muted);
        margin-top: 12px;
        opacity: 0.5;
    }

    /* Sidebar chapter grid - 2 columns on mobile */
    .manga-chapter-list {
        grid-template-columns: 1fr 1fr;
        gap: 6px;
        padding: 10px;
    }

    .manga-chapter-item {
        flex-direction: column;
        align-items: flex-start;
        padding: 10px 12px;
        gap: 8px;
    }

    .manga-chapter-item:hover {
        transform: none;
    }

    .manga-chapter-images-count {
        align-self: flex-end;
    }
}

@media (max-width: 480px) {
    :root {
        --manga-sidebar-w: 260px;
        --manga-header-h: 46px;
        --manga-toolbar-h: 50px;
    }

    .manga-header {
        padding: 0 10px;
    }

    .manga-header-center {
        font-size: 13px;
        padding: 0 8px;
    }

    .manga-btn {
        width: 36px;
        height: 36px;
    }

    .manga-sidebar {
        width: var(--manga-sidebar-w);
        left: calc(-1 * var(--manga-sidebar-w) - 20px);
    }

    .manga-chapter-item {
        padding: 8px 10px;
        gap: 6px;
    }

    .manga-chapter-num {
        width: 30px;
        height: 30px;
        font-size: 12px;
    }

    .manga-chapter-title {
        font-size: 13px;
    }

    .manga-toolbar .manga-btn {
        padding: 0 12px;
        font-size: 12px;
        height: 34px;
    }

    .manga-chapter-indicator {
        font-size: 12px;
        min-width: 50px;
    }

    /* Single column on very small screens */
    .manga-chapter-list {
        grid-template-columns: 1fr;
    }
}

/* ===== iPhone Safe Area ===== */
@supports (padding: env(safe-area-inset-bottom)) {
    .manga-toolbar {
        padding-bottom: env(safe-area-inset-bottom);
        height: calc(var(--manga-toolbar-h) + env(safe-area-inset-bottom));
    }

    .manga-sidebar {
        padding-bottom: env(safe-area-inset-bottom);
    }
}