@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --bg-primary: #0f1115;
    --bg-secondary: #1a1e24;
    --bg-glass: rgba(26, 30, 36, 0.7);
    --bg-glass-hover: rgba(38, 44, 52, 0.85);
    --border-glass: rgba(255, 255, 255, 0.08);
    
    --accent-teal: #00adb5;
    --accent-teal-hover: #00f0fc;
    --accent-gold: #d4af37;
    --accent-gold-hover: #ffd700;
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --danger: #ef4444;
    --danger-hover: #f87171;
    --success: #10b981;
    
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-premium: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 15px rgba(0, 173, 181, 0.2);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-glass);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-teal);
}

/* --- ADMIN PANEL & DASHBOARD --- */
.dashboard-container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

.dashboard-header {
    margin-bottom: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dashboard-title h1 {
    font-size: 2.2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent-teal) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 6px;
}

.dashboard-title p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.badge-premium {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.15) 0%, rgba(212, 175, 55, 0.05) 100%);
    border: 1px solid var(--accent-gold);
    color: var(--accent-gold);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* Upload Area */
.upload-wrapper {
    background: var(--bg-secondary);
    border: 2px dashed var(--border-glass);
    border-radius: 20px;
    padding: 50px 30px;
    text-align: center;
    position: relative;
    cursor: pointer;
    transition: var(--transition-smooth);
    margin-bottom: 40px;
    box-shadow: var(--shadow-premium);
    overflow: hidden;
}

.upload-wrapper:hover, .upload-wrapper.dragover {
    border-color: var(--accent-teal);
    background: rgba(0, 173, 181, 0.02);
    box-shadow: var(--shadow-glow), var(--shadow-premium);
}

.upload-icon-box {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-glass);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--accent-teal);
    transition: var(--transition-smooth);
}

.upload-wrapper:hover .upload-icon-box {
    transform: translateY(-5px);
    background: rgba(0, 173, 181, 0.1);
    color: var(--accent-teal-hover);
    border-color: rgba(0, 173, 181, 0.3);
}

.upload-wrapper input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 2;
}

.upload-text h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.upload-text p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Upload Progress */
.progress-container {
    margin-top: 25px;
    display: none;
}

.progress-bar-wrapper {
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-bar {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--accent-teal) 0%, var(--accent-teal-hover) 100%);
    border-radius: 10px;
    transition: width 0.1s ease;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Books List Table / Cards */
.books-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow-premium);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.section-header h2 {
    font-size: 1.4rem;
    font-weight: 600;
}

.books-table-wrapper {
    width: 100%;
    overflow-x: auto;
}

.books-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.books-table th {
    padding: 16px 20px;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-glass);
}

.books-table td {
    padding: 20px;
    border-bottom: 1px solid var(--border-glass);
    vertical-align: middle;
}

.books-table tr:last-child td {
    border-bottom: none;
}

.book-info-cell {
    display: flex;
    align-items: center;
    gap: 15px;
}

.book-cover-placeholder {
    width: 48px;
    height: 64px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    border-radius: 6px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--accent-teal);
    font-weight: bold;
    font-size: 0.75rem;
    overflow: hidden;
    position: relative;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.book-cover-placeholder canvas {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover;
}

.book-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.book-date {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.book-views {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.book-views svg {
    color: var(--accent-teal);
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 10px;
}

.btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
}

.btn:hover {
    background: rgba(255, 255, 255, 0.08);
}

.btn-primary {
    background: var(--accent-teal);
    border-color: var(--accent-teal);
    color: var(--bg-primary);
    font-weight: 600;
}

.btn-primary:hover {
    background: var(--accent-teal-hover);
    border-color: var(--accent-teal-hover);
    box-shadow: 0 0 10px rgba(0, 173, 181, 0.3);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: var(--danger);
}

.btn-danger:hover {
    background: var(--danger);
    border-color: var(--danger);
    color: var(--text-primary);
}

.btn-icon {
    padding: 8px;
    border-radius: 8px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state svg {
    color: var(--text-muted);
    margin-bottom: 15px;
}

.empty-state h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.empty-state p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-glass);
    border-left: 4px solid var(--accent-teal);
    box-shadow: var(--shadow-premium);
    padding: 16px 24px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1000;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

/* --- FLIPBOOK READER SCREEN --- */
.reader-body {
    background: radial-gradient(circle, #212630 0%, #0d0f12 100%);
    width: 100vw;
    height: 100vh;
    margin: 0;
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    position: relative;
    user-select: none;
}

/* Top Back Button Bar */
.reader-header {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 100;
}

.btn-back {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    padding: 10px 18px;
    border-radius: 30px;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    font-size: 0.9rem;
    box-shadow: var(--shadow-premium);
    transition: var(--transition-smooth);
}

.btn-back:hover {
    background: var(--bg-glass-hover);
    border-color: rgba(255,255,255,0.15);
    transform: translateX(-3px);
}

/* Book Viewport Container */
.viewport-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: 40px;
    position: relative;
    overflow: hidden;
}

/* Zoom support viewport */
.zoom-viewport {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

/* Flipbook main element container */
.book-container {
    position: relative;
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.7);
    transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1); /* smooth page-turn centering transition */
    transform-origin: center center;
    border-radius: 8px;
}

/* Fast transform transition during panning zoom-mode */
.zoom-mode .book-container {
    transition: transform 0.08s ease-out !important;
}

/* Flipbook inner pages */
.flipbook {
    background: transparent;
    width: 100%;
    height: 100%;
}

.page {
    background-color: #ffffff;
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

/* Open Book Center Gutter Shadow */
.page.--left {
    box-shadow: inset -15px 0 20px -10px rgba(0, 0, 0, 0.15);
    border-right: 1px solid rgba(0, 0, 0, 0.05);
}

.page.--right {
    box-shadow: inset 15px 0 20px -10px rgba(0, 0, 0, 0.15);
    border-left: 1px solid rgba(0, 0, 0, 0.05);
}

/* Cover page enhancements */
.page[data-density="hard"] {
    background-color: #ffffff;
    box-shadow: inset 1px 0 5px rgba(0,0,0,0.2), 3px 0 10px rgba(0,0,0,0.2);
}

.page canvas, .page img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}

/* Loading Overlay */
.loading-overlay {
    position: absolute;
    inset: 0;
    background: #0f1115;
    z-index: 500;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    transition: opacity 0.5s ease;
}

.loading-logo-wrapper {
    position: relative;
    width: 180px;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-spinner {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    border: 7px solid rgba(255, 255, 255, 0.05);
    border-top-color: var(--accent-teal);
    border-radius: 50%;
    animation: spin 1.2s infinite linear;
    box-shadow: 0 0 30px rgba(0, 173, 181, 0.3);
    box-sizing: border-box;
}

.loading-logo {
    width: 115px;
    height: 115px;
    object-fit: contain;
    z-index: 2;
    filter: drop-shadow(0 0 10px rgba(0, 173, 181, 0.4));
}

.loading-text {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
}

.loading-progress-bar {
    width: 250px;
    height: 4px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
    overflow: hidden;
}

.loading-progress-fill {
    width: 0%;
    height: 100%;
    background: var(--accent-teal);
    transition: width 0.2s ease;
}

/* Floating Bottom Toolbar Container */
.reader-footer {
    width: 100%;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    z-index: 200;
}

/* Floating Bottom Toolbar */
.reader-toolbar {
    position: relative;
    background: var(--bg-glass);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-glass);
    padding: 10px 24px;
    border-radius: 0;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow-premium);
    z-index: 200;
    transition: var(--transition-smooth);
}

.reader-toolbar:hover {
    background: var(--bg-glass-hover);
    border-color: rgba(255, 255, 255, 0.15);
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: var(--border-glass);
}

.toolbar-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    width: 38px;
    height: 38px;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.toolbar-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.toolbar-btn.active {
    color: var(--accent-teal);
    background: rgba(0, 173, 181, 0.1);
}

/* Page Info & Slider */
.page-info {
    font-size: 0.9rem;
    font-weight: 500;
    min-width: 75px;
    text-align: center;
    color: var(--text-primary);
}

.page-slider-container {
    width: 120px;
    display: flex;
    align-items: center;
}

.page-slider {
    -webkit-appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.15);
    outline: none;
    cursor: pointer;
}

.page-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent-teal);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.page-slider::-webkit-slider-thumb:hover {
    transform: scale(1.3);
    box-shadow: 0 0 8px var(--accent-teal);
}

/* Nav arrows on screen sides */
.nav-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--bg-glass);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-glass);
    color: var(--text-secondary);
    width: 50px;
    height: 50px;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 150;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-premium);
}

.nav-arrow:hover {
    background: var(--bg-glass-hover);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.2);
}

.nav-arrow-left {
    left: 25px;
}

.nav-arrow-right {
    right: 25px;
}

.nav-arrow-left:hover {
    transform: translateY(-50%) translateX(-4px);
}

.nav-arrow-right:hover {
    transform: translateY(-50%) translateX(4px);
}

/* Zoom Dragging Mode Class */
.zoom-mode {
    cursor: grab;
}

.zoom-mode:active {
    cursor: grabbing;
}

/* Animations */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Mobile Media Queries */
@media (max-width: 768px) {
    .dashboard-container {
        margin: 20px auto;
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .books-section {
        padding: 15px;
    }
    
    .books-table th {
        padding: 12px 10px;
        font-size: 0.75rem;
    }
    
    .books-table td {
        padding: 12px 10px;
    }
    
    .book-title {
        max-width: 130px;
    }
    
    .action-buttons {
        flex-direction: column;
        gap: 5px;
    }
    
    .btn {
        padding: 6px 10px;
        font-size: 0.8rem;
    }
    
    /* Reader adjustments */
    .viewport-wrapper {
        padding: 10px;
    }
    
    .nav-arrow {
        width: 38px;
        height: 38px;
        font-size: 0.8rem;
    }
    
    .nav-arrow-left {
        left: 8px;
    }
    
    .nav-arrow-right {
        right: 8px;
    }
    
    .reader-footer {
        height: 70px;
    }
    
    .reader-toolbar {
        padding: 8px 16px;
        gap: 12px;
        width: 100% !important;
        max-width: 100% !important;
        justify-content: space-between;
        border-radius: 0 !important;
        border-left: none !important;
        border-right: none !important;
        border-bottom: none !important;
    }
    
    .toolbar-divider {
        display: none !important;
    }
    
    #zoom-value {
        display: none !important;
    }
    
    .toolbar-btn {
        width: 44px !important;
        height: 44px !important;
        border-radius: 0 !important;
    }
    
    .toolbar-btn svg {
        width: 22px !important;
        height: 22px !important;
    }
    
    .toolbar-group {
        gap: 8px !important;
    }
    
    .page-slider-container {
        display: none; /* Hide slider on small screens to fit other icons */
    }
}

/* --- PORTAL HOMEPAGE STYLES --- */
.portal-body {
    background-color: #000000;
    color: #ffffff;
    overflow-x: hidden;
}

.portal-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
}

.portal-container .btn {
    border-radius: 0 !important;
}

/* Premium Header */
.portal-header-modern {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px 0;
    margin-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.portal-brand-logo {
    font-family: 'Playfair Display', Georgia, serif;
    font-size: 2.4rem;
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
    letter-spacing: -1.5px;
    text-transform: none;
    line-height: 1;
}

.portal-brand-logo span {
    color: var(--accent-teal);
    margin: 0 1px;
}

.header-center-nav {
    display: flex;
    gap: 30px;
}

.header-center-nav .nav-link {
    color: #888888;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-smooth);
    position: relative;
    padding: 6px 0;
}

.header-center-nav .nav-link:hover, .header-center-nav .nav-link.active {
    color: #ffffff;
}

.header-center-nav .nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #ffffff;
}

.header-right-icons {
    display: flex;
    gap: 20px;
    align-items: center;
}

.icon-btn {
    background: none;
    border: none;
    color: #888888;
    cursor: pointer;
    padding: 4px;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-btn:hover {
    color: #ffffff;
}

/* 3D Showcase Frame (Black card with thin gray border) */
.slider-showcase-section {
    margin-bottom: 50px;
}

.slider-showcase-frame {
    background-color: #0c0c0e;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 0;
    padding: 60px 40px 40px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.8);
}

.slider-showcase-frame::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.015) 0%, transparent 60%);
    pointer-events: none;
    z-index: 1;
}

/* 3D Carousel Viewport */
.carousel-3d-viewport {
    width: 100%;
    height: 480px;
    position: relative;
    perspective: 1200px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.carousel-3d-item {
    position: absolute;
    width: 250px;
    height: 352px; /* standard A4 aspect ratio 1:1.41 */
    transition: all 0.6s cubic-bezier(0.25, 1, 0.5, 1);
    cursor: pointer;
    user-select: none;
    transform-style: preserve-3d;
    opacity: 0;
    visibility: hidden;
}

/* 3D Transform States */
.carousel-3d-item.active {
    transform: translate3d(0, 0, 80px) rotateY(0deg);
    z-index: 10;
    opacity: 1;
    visibility: visible;
}

.carousel-3d-item.prev-1 {
    transform: translate3d(-180px, 0, 0px) rotateY(25deg) scale(0.9);
    z-index: 8;
    opacity: 0.85;
    visibility: visible;
}

.carousel-3d-item.next-1 {
    transform: translate3d(180px, 0, 0px) rotateY(-25deg) scale(0.9);
    z-index: 8;
    opacity: 0.85;
    visibility: visible;
}

.carousel-3d-item.prev-2 {
    transform: translate3d(-330px, 0, -80px) rotateY(32deg) scale(0.8);
    z-index: 6;
    opacity: 0.55;
    visibility: visible;
}

.carousel-3d-item.next-2 {
    transform: translate3d(330px, 0, -80px) rotateY(-32deg) scale(0.8);
    z-index: 6;
    opacity: 0.55;
    visibility: visible;
}

.carousel-3d-item.hidden-left {
    transform: translate3d(-380px, 0, -150px) rotateY(40deg) scale(0.6);
    opacity: 0;
    z-index: 1;
}

.carousel-3d-item.hidden-right {
    transform: translate3d(380px, 0, -150px) rotateY(-40deg) scale(0.6);
    opacity: 0;
    z-index: 1;
}

/* Cover Wrapper & Image styling */
.cover-image-wrapper {
    width: 100%;
    height: 100%;
    border-radius: 0;
    overflow: hidden;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backface-visibility: hidden;
}

.cover-renderer {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cover-rendered-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.cover-shadow {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40%;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.4), transparent);
    pointer-events: none;
}

/* Active item text info removed to match B-Mag screenshot style */

/* Dots Controls */
.carousel-3d-dots {
    display: flex;
    gap: 8px;
    margin-top: 50px;
    z-index: 20;
}

.dot-btn {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.dot-btn:hover {
    background-color: rgba(255, 255, 255, 0.5);
}

.dot-btn.active {
    background-color: #ffffff;
    width: 24px;
    border-radius: 4px;
}

/* Discover (Keşfet) Section */
.discover-section {
    margin-top: 30px;
    margin-bottom: 20px;
    width: 100%;
}

.discover-frame {
    background-color: #0c0c0e;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 0;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.discover-title {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: #555555;
    margin-bottom: 12px;
    text-transform: uppercase;
}

.discover-row {
    display: flex;
    gap: 20px;
}

.filter-col, .search-col {
    position: relative;
    display: flex;
    align-items: center;
    background-color: #121214;
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: 0;
    padding: 0 16px;
    height: 48px;
    transition: var(--transition-smooth);
}

.filter-col {
    width: 30%;
    min-width: 200px;
}

.search-col {
    flex-grow: 1;
}

.filter-col:focus-within, .search-col:focus-within {
    border-color: rgba(255, 255, 255, 0.12);
    background-color: #151518;
}

.input-icon-left {
    color: #555555;
    margin-right: 12px;
    flex-shrink: 0;
}

.select-arrow-right {
    color: #555555;
    margin-left: auto;
    pointer-events: none;
    flex-shrink: 0;
}

.filter-select {
    background: none;
    border: none;
    color: #ffffff;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    width: 100%;
    height: 100%;
    outline: none;
    cursor: pointer;
    appearance: none;
    padding-right: 20px;
}

.filter-select option {
    background-color: #0c0c0e;
    color: #ffffff;
}

.search-input {
    background: none;
    border: none;
    color: #ffffff;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    width: 100%;
    height: 100%;
    outline: none;
}

.search-input::placeholder {
    color: #444444;
}

/* Archive Grid Section */
.archive-section {
    margin-top: 80px;
    margin-bottom: 60px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: #ffffff;
    border-left: 3px solid var(--accent-teal);
    padding-left: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.issues-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 30px;
    justify-content: center;
}

.issue-card {
    background-color: #0c0c0e;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 0;
    overflow: hidden;
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
    max-width: 250px;
    margin: 0 auto;
    width: 100%;
}

.issue-card:hover {
    transform: translateY(-6px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5);
}

.issue-cover-container {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1.41;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.01);
    display: flex;
    align-items: center;
    justify-content: center;
}

.issue-cover-container canvas,
.issue-cover-container img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.issue-cover-container .book-cover-placeholder {
    width: 100% !important;
    height: 100% !important;
    border: none !important;
    box-shadow: none !important;
    background: transparent !important;
}

.issue-card:hover .issue-cover-container canvas,
.issue-card:hover .issue-cover-container img {
    transform: scale(1.03);
}

.issue-card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: 2;
}

.issue-cover-container:hover .issue-card-overlay {
    opacity: 1;
}

.issue-info {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex-grow: 1;
}

.issue-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: #ffffff;
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.issue-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: #666666;
}

/* Spinner and Loaders */
.spinner {
    width: 24px;
    height: 24px;
    border: 2px solid rgba(255, 255, 255, 0.05);
    border-top: 2px solid #ffffff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.cover-error-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: #555555;
    letter-spacing: 1.5px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Portal Footer */
.portal-footer {
    text-align: center;
    padding: 40px 0 20px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: #555555;
    font-size: 0.8rem;
    margin-top: 60px;
}

/* Responsive adjustments */
@media (max-width: 992px) {
    .carousel-3d-viewport {
        height: 480px;
    }
    .carousel-3d-item {
        width: 240px;
        height: 338px;
    }
    .carousel-3d-item.active {
        transform: translate3d(0, 0, 60px) rotateY(0deg);
    }
    .carousel-3d-item.prev-1 {
        transform: translate3d(-150px, 0, 0px) rotateY(25deg) scale(0.9);
    }
    .carousel-3d-item.next-1 {
        transform: translate3d(150px, 0, 0px) rotateY(-25deg) scale(0.9);
    }
    .carousel-3d-item.prev-2 {
        transform: translate3d(-280px, 0, -60px) rotateY(32deg) scale(0.8);
    }
    .carousel-3d-item.next-2 {
        transform: translate3d(280px, 0, -60px) rotateY(-32deg) scale(0.8);
    }
    .filter-col {
        width: 40%;
    }
}

@media (max-width: 768px) {
    .portal-container {
        padding: 20px 15px;
    }
    .slider-showcase-section {
        margin-left: -15px;
        margin-right: -15px;
        width: calc(100% + 30px);
    }
    .slider-showcase-frame {
        padding: 25px 5px 15px 5px;
    }
    .portal-header-modern {
        flex-direction: column;
        gap: 15px;
        text-align: center;
        margin-bottom: 20px;
    }
    .carousel-3d-viewport {
        height: 520px;
    }
    .carousel-3d-item {
        width: 300px;
        height: 420px;
    }
    .carousel-3d-item.active {
        transform: translate3d(0, 0, 40px) rotateY(0deg);
    }
    .carousel-3d-item.prev-1 {
        transform: translate3d(-110px, 0, 0px) rotateY(22deg) scale(0.9);
    }
    .carousel-3d-item.next-1 {
        transform: translate3d(110px, 0, 0px) rotateY(-22deg) scale(0.9);
    }
    .carousel-3d-item.prev-2, .carousel-3d-item.next-2 {
        display: none; /* Hide 2nd layers on small mobile to avoid layout breaking */
    }
    .discover-row {
        flex-direction: column;
        gap: 10px;
    }
    .filter-col {
        width: 100%;
    }
}

/* Reader Brand Link (Top Left) */
.reader-brand-link {
    position: absolute;
    top: 20px;
    left: 20px;
    z-index: 100;
    display: flex;
    align-items: center;
    text-decoration: none;
    background: rgba(12, 12, 14, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 8px 16px;
    transition: var(--transition-smooth);
}

.reader-brand-link:hover {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.reader-brand-logo {
    height: 38px;
    object-fit: contain;
}

.reader-brand-text {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 1px;
    color: var(--text-primary);
    text-transform: uppercase;
}

@media (max-width: 768px) {
    .reader-brand-link {
        top: 15px;
        left: 15px;
        padding: 6px 12px;
    }
    .reader-brand-logo {
        height: 30px !important;
    }
    .reader-brand-text {
        font-size: 0.85rem;
    }
}