/* Modern & Premium Dark-Themed Style System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-color: #1e1e24;
    --card-bg: #27272e;
    --text-primary: #f5f5f7;
    --text-secondary: #a1a1a6;
    --accent-blue: #0071e3;
    --accent-blue-hover: #0077ed;
    --accent-dark: #121214;
    --border-color: #383842;
    --danger-color: #ff3b30;
    --success-color: #34c759;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-smooth);
}

/* Header / Nav */
.header {
    background-color: rgba(18, 18, 20, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-logo img {
    height: 32px;
}

.nav-logo h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.5px;
    background: linear-gradient(135deg, #fff 0%, #a1a1a6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 20px;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition-smooth);
}

.icon-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Main Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 20px;
    width: 100%;
    flex: 1;
}

/* Ad Banner Area */
.ad-container {
    margin-bottom: 40px;
    width: 100%;
}

.ad-area {
    min-height: 90px;
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

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

.ad-badge {
    position: absolute;
    top: 5px;
    right: 5px;
    background-color: rgba(0, 0, 0, 0.6);
    color: #999;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 3px;
    font-weight: 600;
    z-index: 15;
}

/* Slider (Carousel) Styles */
.ad-slider-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.ad-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease-in-out, visibility 0.8s;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1;
}

.ad-slide.active {
    position: relative;
    opacity: 1;
    visibility: visible;
    z-index: 2;
}

.ad-slider-dots {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 10;
}

.ad-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.ad-dot.active, .ad-dot:hover {
    background-color: var(--accent-blue);
    transform: scale(1.2);
}

/* Arama Çubuğu (Header İçi) */
.search-container {
    display: flex;
    align-items: center;
}

.search-form {
    display: flex;
    align-items: center;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2px 10px;
    width: 100%;
    max-width: 200px;
    transition: var(--transition-smooth);
}

.search-form:focus-within {
    border-color: var(--accent-blue);
    background-color: var(--card-bg);
    box-shadow: 0 0 0 2px rgba(0, 113, 227, 0.2);
}

.search-input {
    background: none;
    border: none;
    color: white;
    font-family: inherit;
    font-size: 13px;
    width: 100%;
    padding: 6px 0;
}

.search-input:focus {
    outline: none;
}

.search-input::placeholder {
    color: var(--text-secondary);
}

.search-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition-smooth);
}

.search-btn:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.08);
}

/* Magazine Grid */
.magazine-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

@media (max-width: 992px) {
    .magazine-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 15px;
    }
}

@media (max-width: 768px) {
    .magazine-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }
}

@media (max-width: 576px) {
    .magazine-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    .nav-logo h1 {
        font-size: 14px;
        letter-spacing: 0.2px;
    }
    .search-form {
        max-width: 120px;
        padding: 1px 6px;
    }
    .search-input {
        font-size: 11px;
        padding: 4px 0;
    }
}

/* Magazine Card */
.magazine-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    max-width: 220px;
    margin: 0 auto;
    width: 100%;
}

.magazine-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3), 0 0 0 2px var(--accent-blue);
}

.card-img-wrapper {
    position: relative;
    width: 100%;
    padding-top: 135%; /* A4 aspect ratio helper */
    background-color: var(--accent-dark);
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.card-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.magazine-card:hover .card-img {
    transform: scale(1.05);
}

.card-content {
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex: 1;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-date {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
}

.page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 6px;
    border-radius: 8px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    font-weight: 500;
    transition: var(--transition-smooth);
}

.page-link:hover:not(.disabled) {
    background-color: var(--border-color);
    border-color: var(--text-secondary);
}

.page-link.active {
    background-color: var(--accent-blue);
    border-color: var(--accent-blue);
    color: white;
}

.page-link.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Footer */
.footer {
    background-color: var(--accent-dark);
    border-top: 1px solid var(--border-color);
    padding: 40px 20px;
    font-size: 14px;
    color: var(--text-secondary);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-links {
    display: flex;
    gap: 25px;
    flex-wrap: wrap;
}

.footer-links a:hover {
    color: #fff;
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

/* Magazine Detail Page */
.detail-layout {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 50px;
    margin-top: 20px;
}

@media (max-width: 900px) {
    .detail-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .detail-left {
        max-width: 320px;
        margin: 0 auto;
    }
}

.detail-left {
    width: 100%;
}

.detail-img-card {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--border-color);
    background-color: var(--accent-dark);
    position: relative;
    padding-top: 140%;
}

.detail-img-card img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.detail-right {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.detail-title {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 10px;
    color: white;
}

.detail-date {
    font-size: 16px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
    margin-bottom: 20px;
}

.detail-description {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 30px;
    line-height: 1.8;
}

.detail-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
}

.btn-primary {
    background-color: var(--accent-blue);
    color: white;
}

.btn-primary:hover {
    background-color: var(--accent-blue-hover);
    box-shadow: 0 4px 15px rgba(0, 113, 227, 0.4);
}

.btn-secondary {
    background-color: #2c2c31;
    color: white;
}

.btn-secondary:hover {
    background-color: #3e3e44;
}

.btn-outline {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--text-secondary);
}

/* Custom PDF Reader Screen */
.reader-layout {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    display: flex;
    background-color: #121214;
    position: relative;
    user-select: none;
    -webkit-user-select: none;
}

.reader-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
}

.reader-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
    background: linear-gradient(to bottom, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
    pointer-events: none;
}

.reader-header * {
    pointer-events: auto;
}

.reader-logo {
    font-weight: 700;
    font-size: 18px;
    color: white;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.reader-stage {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: auto;
    padding: 70px 20px 20px 20px;
    position: relative;
    scroll-behavior: smooth;
}

.pdf-canvas-wrapper {
    position: relative;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.8);
    background-color: #fff;
    transition: transform 0.2s ease;
    margin: auto;
}

.magnifier-lens {
    display: none;
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 12px;
    border: 3px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 8px 30px rgba(0,0,0,0.5), inset 0 0 10px rgba(0,0,0,0.3);
    overflow: hidden;
    pointer-events: none;
    z-index: 99;
    background-color: #000;
}

.magnifier-lens canvas {
    display: block;
    width: 100%;
    height: 100%;
}

.pdf-canvas {
    display: block;
    max-width: 100%;
    height: auto;
}

/* Custom Right Floating Toolbar */
.reader-toolbar {
    position: absolute;
    right: 25px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(30, 30, 35, 0.8);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 15px 10px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    z-index: 20;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1), right 0.4s ease;
}

.toolbar-collapse-btn {
    display: none;
    background: rgba(30, 30, 35, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    width: 24px;
    height: 44px;
    border-radius: 8px 0 0 8px;
    position: absolute;
    left: -24px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    box-shadow: -4px 0 10px rgba(0, 0, 0, 0.25);
    z-index: 21;
    border-right: none;
    transition: var(--transition-smooth);
}

.toolbar-collapse-btn:hover {
    background-color: var(--accent-blue);
}

.toolbar-collapse-btn svg {
    transition: transform 0.3s ease;
}

.reader-toolbar.collapsed .toolbar-collapse-btn svg {
    transform: rotate(180deg);
}

@media (max-width: 768px) {
    .toolbar-collapse-btn {
        display: flex;
    }
    .reader-toolbar {
        right: 15px;
    }
    .reader-toolbar.collapsed {
        transform: translate(calc(100% + 15px), -50%);
    }
}

.toolbar-item {
    color: white;
    cursor: pointer;
    font-size: 18px;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: var(--transition-smooth);
    border: none;
    background: none;
}

.toolbar-item:hover:not(.disabled) {
    background-color: var(--accent-blue);
    color: white;
}

.toolbar-item.active {
    background-color: var(--accent-blue);
    color: white;
}

.toolbar-item.disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.page-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 13px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 10px 0;
    width: 100%;
    color: var(--text-primary);
}

.page-indicator span:first-child {
    font-size: 16px;
    color: var(--accent-blue);
}

/* Left Sidebar / Thumbnails Panel */
.reader-sidebar {
    width: 240px; /* Biraz daha minimal (280px yerine 240px) */
    height: 100%;
    background-color: rgba(18, 18, 20, 0.93); /* Şık yarı şeffaf koyu arka plan */
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    z-index: 30;
    position: absolute;
    left: 0;
    top: 0;
    transform: translateX(-100%);
}

.reader-sidebar.open {
    transform: translateX(0);
    /* position: relative kaldırıldı; artık asıl içeriği itmez, üstüne biner ve PDF kaybolmaz! */
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: white;
}

.thumbnail-list {
    flex: 1;
    overflow-y: auto;
    padding: 15px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: max-content; /* Satırların içeriğe göre doğal boyutunda olmasını sağlar */
    align-content: start; /* Satırların daralmasını önleyerek en üstte sabit boyutta kalmasını sağlar */
    gap: 12px;
}

.thumbnail-item {
    cursor: pointer;
    border-radius: 6px;
    overflow: hidden;
    border: 2px solid transparent;
    transition: var(--transition-smooth);
    background-color: #2c2c31;
    padding: 5px;
    text-align: center;
}

.thumbnail-item:hover {
    border-color: var(--text-secondary);
}

.thumbnail-item.active {
    border-color: var(--accent-blue);
    background-color: rgba(0, 113, 227, 0.1);
}

.thumbnail-img-wrapper {
    position: relative;
    padding-top: 140%;
    background-color: #121214;
    border-radius: 4px;
    overflow: hidden;
}

.thumbnail-img-wrapper canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.thumbnail-page-num {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 5px;
    font-weight: 500;
}

.thumbnail-item.active .thumbnail-page-num {
    color: var(--accent-blue);
    font-weight: 700;
}

/* Nav keys overlay */
.nav-arrow {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 12%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.15);
    font-size: 48px;
    cursor: pointer;
    transition: var(--transition-smooth);
    z-index: 5;
    background: none;
    border: none;
}

.nav-arrow:hover {
    color: white;
    background-color: rgba(0, 0, 0, 0.15);
}

.nav-arrow.disabled {
    pointer-events: none;
    opacity: 0.15;
}

.nav-arrow-left {
    left: 0;
}

.nav-arrow-right {
    right: 0;
}

.reader-sidebar-backdrop {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: transparent; /* PDF'in kararmasını önlemek için tamamen şeffaf yapıldı */
    z-index: 25;
    cursor: pointer;
}

.reader-sidebar-backdrop.open {
    display: block;
}

/* Admin Styling */
.admin-login-layout {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--accent-dark);
}

.login-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.login-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 25px;
    text-align: center;
    color: white;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    color: white;
    font-family: inherit;
    font-size: 15px;
    transition: var(--transition-smooth);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.2);
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 20px;
    font-weight: 500;
}

.alert-danger {
    background-color: rgba(255, 59, 48, 0.15);
    border: 1px solid var(--danger-color);
    color: #ff453a;
}

.alert-success {
    background-color: rgba(52, 199, 89, 0.15);
    border: 1px solid var(--success-color);
    color: #30d158;
}

/* Admin Dashboard */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
    margin-bottom: 30px;
}

.admin-title {
    font-size: 28px;
    font-weight: 700;
    color: white;
}

.admin-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 40px;
}

@media (max-width: 992px) {
    .admin-grid {
        grid-template-columns: 1fr;
    }
}

.admin-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}

.admin-card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

/* Admin Table */
.admin-table-wrapper {
    overflow-x: auto;
}

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

.admin-table th, .admin-table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
}

.admin-table th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 14px;
}

.admin-table td {
    font-size: 15px;
}

.admin-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.admin-table-img {
    width: 50px;
    height: 70px;
    object-fit: cover;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.action-links {
    display: flex;
    gap: 12px;
}

.action-link {
    font-size: 14px;
    font-weight: 500;
}

.action-link-danger {
    color: var(--danger-color);
}

.action-link-danger:hover {
    color: #ff453a;
    text-decoration: underline;
}

/* Upload area cover extractor */
.cover-preview-wrapper {
    display: flex;
    gap: 20px;
    align-items: center;
    background-color: var(--accent-dark);
    padding: 15px;
    border-radius: 8px;
    border: 1px dashed var(--border-color);
    margin-top: 15px;
}

.cover-preview-canvas {
    width: 80px;
    height: 110px;
    border-radius: 4px;
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    object-fit: cover;
}

.progress-wrapper {
    margin-top: 15px;
    display: none;
}

.progress-bar-container {
    height: 8px;
    background-color: var(--accent-dark);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 5px;
}

.progress-bar {
    width: 0%;
    height: 100%;
    background-color: var(--accent-blue);
    transition: width 0.1s ease;
}

.progress-text {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Tab toggle */
.tab-container {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.tab-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 10px 20px;
    cursor: pointer;
    font-size: 15px;
    font-weight: 500;
    border-bottom: 2px solid transparent;
    transition: var(--transition-smooth);
}

.tab-btn.active {
    color: white;
    border-bottom-color: var(--accent-blue);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Side Ads Styling */
.side-ad {
    position: fixed;
    top: 100px;
    width: 160px;
    height: 600px; /* Standard skyscraper height */
    z-index: 90; /* below header (100) */
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.side-ad-left {
    left: 20px;
}

.side-ad-right {
    right: 20px;
}

.side-ad img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

.side-ad a {
    display: block;
    width: 100%;
    height: 100%;
}

.side-ad a:hover img {
    transform: scale(1.02);
}

.side-ad .ad-badge {
    position: absolute;
    top: 5px;
    right: 5px;
    background-color: rgba(0, 0, 0, 0.7);
    color: #a1a1a6;
    font-size: 9px;
    padding: 2px 6px;
    border-radius: 3px;
    font-weight: 600;
    z-index: 10;
    pointer-events: none;
    letter-spacing: 0.5px;
}

.side-ad-code-wrapper {
    width: 100%;
    height: 100%;
    overflow: auto;
}

/* Hide on screens where side ads would overlap the main content */
@media (max-width: 1580px) {
    .side-ad {
        display: none !important;
    }
}