/* Ad reader — aligns with auth / home / upload / search visual system */
:root {
    --ar-ink: #15261a;
    --ar-forest: #205A28;
    --ar-forest-deep: #163f1c;
    --ar-sage: #4a7a52;
    --ar-mist: #e8eee8;
    --ar-paper: #f6f7f4;
    --ar-line: rgba(21, 38, 26, 0.12);
    --ar-gold: #b08d3e;
    --ar-font-display: "Literata", "Noto Serif SC", "Songti SC", Georgia, serif;
    --ar-font-ui: "Manrope", "Noto Sans SC", "PingFang SC", "Segoe UI", sans-serif;
}

@keyframes arFadeUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes arDrift {
    0%, 100% { transform: translate3d(0, 0, 0) scale(1); }
    50% { transform: translate3d(1%, -0.6%, 0) scale(1.02); }
}

@media (prefers-reduced-motion: reduce) {
    .ad-reader-page *,
    .ad-reader-page *::before,
    .ad-reader-page *::after {
        animation: none !important;
        transition: none !important;
    }
}

body.ad-reader-page {
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    font-family: var(--ar-font-ui);
    color: var(--ar-ink);
    background: var(--ar-paper);
}

body.ad-reader-page.ad-reader-active {
    overflow: hidden;
    height: 100vh;
}

/* —— Gate hero —— */
.ar-hero {
    position: relative;
    overflow: hidden;
    color: #f4f7f4;
    background:
        linear-gradient(155deg, rgba(22, 63, 28, 0.94) 0%, rgba(21, 38, 26, 0.9) 50%, rgba(32, 90, 40, 0.88) 100%),
        radial-gradient(90% 60% at 88% 12%, rgba(176, 141, 62, 0.18), transparent 50%),
        linear-gradient(135deg, #1a3d22 0%, #0f1f14 100%);
    padding: clamp(1.75rem, 3.5vw, 2.75rem) 0 clamp(1.5rem, 3vw, 2.25rem);
    animation: arFadeUp 0.5s ease both;
}

.ar-hero::before {
    content: "";
    position: absolute;
    inset: -5%;
    background:
        repeating-linear-gradient(
            90deg,
            transparent 0,
            transparent 44px,
            rgba(255, 255, 255, 0.03) 44px,
            rgba(255, 255, 255, 0.03) 48px,
            transparent 48px,
            transparent 80px,
            rgba(176, 141, 62, 0.06) 80px,
            rgba(176, 141, 62, 0.06) 84px
        );
    animation: arDrift 22s ease-in-out infinite;
    pointer-events: none;
}

.ar-hero-inner {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 1.25rem;
    text-align: center;
}

.ar-hero-kicker {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(244, 247, 244, 0.68);
    margin-bottom: 0.55rem;
}

.ar-hero-title {
    font-family: var(--ar-font-display);
    font-size: clamp(1.65rem, 3.2vw, 2.35rem);
    font-weight: 600;
    line-height: 1.25;
    margin: 0 0 0.65rem;
    letter-spacing: -0.02em;
}

.ar-hero-support {
    margin: 0 auto;
    max-width: 36rem;
    font-size: clamp(0.92rem, 1.5vw, 1.02rem);
    line-height: 1.65;
    color: rgba(244, 247, 244, 0.78);
}

.ar-hero-book {
    margin-top: 1.15rem;
    display: inline-block;
    padding: 0.45rem 0.9rem;
    border: 1px solid rgba(244, 247, 244, 0.22);
    background: rgba(8, 16, 10, 0.28);
    font-size: 0.88rem;
    color: rgba(244, 247, 244, 0.92);
    max-width: 100%;
}

.ar-hero-book-label {
    opacity: 0.7;
    margin-right: 0.35rem;
}

.ar-hero-book-title {
    font-family: var(--ar-font-display);
    font-weight: 600;
}

/* —— Gate body —— */
.ar-gate {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: clamp(1.5rem, 3vw, 2.5rem) 1.25rem 2.5rem;
    animation: arFadeUp 0.55s 0.06s ease both;
}

.ar-gate-panel {
    width: 100%;
    max-width: 960px;
    background: #fff;
    border: 1px solid var(--ar-line);
    padding: clamp(1.25rem, 2.5vw, 2rem);
}

.ar-gate-lead {
    text-align: center;
    margin: 0 0 1.25rem;
    font-size: 0.95rem;
    line-height: 1.65;
    color: rgba(21, 38, 26, 0.72);
}

.ar-ad-slot {
    margin: 0 auto 1.25rem;
    min-height: 280px;
    width: 100%;
    max-width: 970px;
    display: block;
    overflow: visible;
    background: var(--ar-mist);
    border: 1px dashed rgba(32, 90, 40, 0.28);
    padding: 1.25rem;
    box-sizing: border-box;
    text-align: center;
}

.ar-ad-slot ins.adsbygoogle {
    display: block !important;
    width: 100% !important;
    min-height: 250px;
}

.ar-ad-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ar-sage);
    margin-bottom: 0.75rem;
}

@media (max-width: 768px) {
    .ar-ad-slot {
        padding: 0.85rem;
        min-height: 200px;
    }
    .ar-ad-slot ins.adsbygoogle {
        min-height: 200px;
    }
}

.ar-click-indicator {
    margin: 0 auto 1rem;
    max-width: 420px;
    padding: 0.75rem 1.15rem;
    background: rgba(32, 90, 40, 0.08);
    border: 1px solid rgba(32, 90, 40, 0.28);
    color: var(--ar-forest-deep);
    display: none;
    text-align: center;
    font-size: 0.92rem;
}

.ar-click-indicator.show {
    display: block;
}

.ar-click-indicator i {
    color: var(--ar-forest);
    margin-right: 0.35rem;
}

.ar-permission {
    margin-top: 0.5rem;
    padding: 1.1rem 1.25rem;
    background: var(--ar-mist);
    border-left: 3px solid var(--ar-forest);
}

.ar-permission h6 {
    margin: 0 0 0.55rem;
    font-family: var(--ar-font-display);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ar-forest-deep);
}

.ar-permission ul {
    margin: 0;
    padding-left: 1.15rem;
    font-size: 0.875rem;
    line-height: 1.7;
    color: rgba(21, 38, 26, 0.72);
}

.ar-permission li + li {
    margin-top: 0.15rem;
}

/* —— Reader shell —— */
#readerNavbar.hidden {
    display: none !important;
}

.reader-container {
    flex: 1;
    height: calc(100vh - 56px);
    display: flex;
    flex-direction: column;
    min-height: 0;
}

#readerNavbar.hidden + .reader-container {
    height: 100vh;
}

body.ad-reader-active .site-tail,
body.ad-reader-active footer {
    display: none !important;
}

.reader-content {
    flex: 1;
    display: flex;
    overflow: hidden;
    min-height: 0;
}

.reader-sidebar {
    width: 300px;
    background: #fff;
    border-right: 1px solid var(--ar-line);
    overflow-y: auto;
    flex-shrink: 0;
    transition: width 0.3s ease, padding 0.3s ease;
}

.reader-sidebar.hidden {
    width: 0 !important;
    min-width: 0 !important;
    border-right: none;
    overflow: hidden;
    padding: 0;
}

.ar-sidebar-inner {
    padding: 1.35rem 1.25rem;
}

.ar-sidebar-title {
    font-family: var(--ar-font-display);
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--ar-ink);
    margin: 0 0 0.35rem;
}

.ar-sidebar-author {
    margin: 0;
    font-size: 0.9rem;
    color: var(--ar-sage);
}

.ar-sidebar-divider {
    border: 0;
    border-top: 1px solid var(--ar-line);
    margin: 1rem 0;
}

.ar-sidebar-meta {
    font-size: 0.82rem;
    color: rgba(21, 38, 26, 0.62);
    margin-bottom: 1rem;
}

.ar-sidebar-meta i {
    color: var(--ar-forest);
    margin-right: 0.25rem;
}

.ar-sidebar-section-title {
    font-family: var(--ar-font-display);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ar-forest-deep);
    margin: 0 0 0.85rem;
}

.ar-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    width: 100%;
    padding: 0.5rem 0.85rem;
    font-size: 0.875rem;
    font-weight: 600;
    font-family: var(--ar-font-ui);
    border: 1px solid var(--ar-line);
    background: #fff;
    color: var(--ar-ink);
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.ar-btn:hover {
    border-color: var(--ar-forest);
    color: var(--ar-forest);
    background: rgba(32, 90, 40, 0.04);
}

.ar-btn:disabled,
.ar-btn.is-disabled {
    opacity: 0.55;
    cursor: not-allowed;
    pointer-events: none;
}

.ar-btn-primary {
    background: var(--ar-forest);
    border-color: var(--ar-forest);
    color: #f4f7f4;
}

.ar-btn-primary:hover {
    background: var(--ar-forest-deep);
    border-color: var(--ar-forest-deep);
    color: #f4f7f4;
}

.ar-sidebar-hint {
    display: block;
    margin-top: 0.4rem;
    font-size: 0.78rem;
    color: rgba(21, 38, 26, 0.55);
    line-height: 1.45;
}

.ar-sidebar-actions > * + * {
    margin-top: 0.65rem;
}

.reader-main {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: #eceee9;
}

.loading-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--ar-sage);
    font-family: var(--ar-font-ui);
}

.loading-spinner i {
    font-size: 1.75rem;
    color: var(--ar-forest);
}

#pdfContainer {
    width: 100%;
    height: 100%;
    overflow: auto;
}

#pdfViewer {
    width: 100%;
}

.page {
    margin: 10px auto;
    box-shadow: 0 2px 10px rgba(21, 38, 26, 0.08);
    background: white;
}

#epubContainer {
    width: 100%;
    height: 100%;
    overflow: auto;
    background: var(--ar-paper);
}

.reader-frame {
    width: 100%;
    height: 100%;
    border: none;
}

/* Floating controls */
.sidebar-toggle,
.header-toggle,
.fullscreen-btn {
    position: fixed;
    z-index: 1002;
    background: var(--ar-forest-deep);
    color: #f4f7f4;
    border: 1px solid rgba(244, 247, 244, 0.12);
    border-radius: 4px;
    width: 44px;
    height: 44px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
    font-size: 1.15rem;
}

.sidebar-toggle:hover,
.header-toggle:hover,
.fullscreen-btn:hover {
    background: var(--ar-forest);
}

.sidebar-toggle {
    top: 20px;
    left: 20px;
}

.header-toggle {
    top: 20px;
    right: 20px;
    z-index: 1003;
}

.fullscreen-btn {
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 101;
    width: 40px;
    height: 40px;
}

.reader-controls {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(22, 63, 28, 0.92);
    color: #f4f7f4;
    padding: 0.45rem 1rem;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 0.85rem;
    z-index: 100;
    border: 1px solid rgba(244, 247, 244, 0.1);
}

.reader-controls button {
    background: none;
    border: none;
    color: #f4f7f4;
    font-size: 1.15rem;
    cursor: pointer;
    padding: 0.25rem;
}

.reader-controls button:hover:not(:disabled) {
    color: var(--ar-gold);
}

.reader-controls button:disabled {
    color: rgba(244, 247, 244, 0.35);
    cursor: not-allowed;
}

.reader-controls .page-info {
    font-size: 0.85rem;
    font-variant-numeric: tabular-nums;
    margin: 0 0.25rem;
}

.ad-permission-badge {
    position: fixed;
    top: 70px;
    right: 20px;
    background: var(--ar-forest);
    color: #f4f7f4;
    padding: 0.5rem 0.95rem;
    border-radius: 4px;
    font-size: 0.82rem;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(21, 38, 26, 0.18);
    font-family: var(--ar-font-ui);
}

.ad-permission-badge .remaining-time {
    font-weight: 600;
    margin-left: 0.25rem;
}

/* Recommendations */
.ad-reader-recommended-list .recommended-book-item {
    margin-bottom: 0.75rem;
}

.ad-reader-recommended-list .recommended-book-item a {
    text-decoration: none;
    color: inherit;
    display: block;
}

.ad-reader-recommended-list .recommended-book-item a:hover {
    color: var(--ar-forest);
}

.ad-reader-recommended-list .recommended-book-cover {
    width: 48px;
    height: 64px;
    flex-shrink: 0;
    background: var(--ar-mist);
    border: 1px solid var(--ar-line);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ad-reader-recommended-list .recommended-book-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.ad-reader-recommended-list .recommended-book-title {
    font-size: 0.85rem;
    font-weight: 600;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.ad-reader-recommended-list .recommended-book-author {
    font-size: 0.75rem;
    color: var(--ar-sage);
    margin-top: 0.15rem;
}

body.ad-reader-page.ad-reader-gate footer.bg-light,
body.ad-reader-page.ad-reader-gate .site-tail footer.bg-light {
    background: transparent !important;
    border-top: 1px solid var(--ar-line) !important;
}

body.ad-reader-page.ad-reader-gate footer.bg-light strong {
    color: var(--ar-forest-deep);
    font-family: var(--ar-font-display);
}