/* Books 暢銷榜追蹤 - 淺色主題樣式 */

:root {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.9);
    --bg-glass: rgba(255, 255, 255, 0.8);
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6, #a855f7);
    --success: #16a34a;
    --warning: #ca8a04;
    --danger: #dc2626;
    --border-color: rgba(0, 0, 0, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.08);
    --glass-blur: blur(20px);
}

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

html {
    scroll-behavior: smooth;
}

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

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(168, 85, 247, 0.04) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    box-shadow: 0 1px 3px var(--shadow-color);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.logo-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--accent-primary);
}

/* Date Filter */
.date-filter {
    padding: 2rem 0 1rem;
}

.filter-card {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
}

.filter-card h3 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.date-inputs {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-end;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.input-group input {
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 1rem;
}

.input-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.2);
}

.btn-primary {
    padding: 0.75rem 1.5rem;
    background: var(--accent-gradient);
    border: none;
    border-radius: 0.5rem;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-secondary);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary:hover {
    background: var(--bg-glass);
    color: var(--text-primary);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Main Content */
.main-content {
    padding: 2rem 0 4rem;
}

.ranking-section {
    margin-bottom: 4rem;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.section-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    background: rgba(99, 102, 241, 0.2);
    color: var(--accent-primary);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-orange {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.badge-green {
    background: rgba(34, 197, 94, 0.2);
    color: var(--success);
}

/* Source Tabs */
.source-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.source-tab {
    padding: 0.5rem 1.25rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.source-tab:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
    border-color: rgba(99, 102, 241, 0.3);
}

.source-tab.active {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

/* Ranking Grid */
.ranking-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

/* Book Card */
.book-card {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.25rem;
    transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
    cursor: pointer;
}

.book-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px var(--shadow-color);
    border-color: var(--accent-primary);
}

.book-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.book-rank {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--accent-gradient);
    border-radius: 0.75rem;
    font-size: 1.25rem;
    font-weight: 700;
    flex-shrink: 0;
}

.book-rank.top-3 {
    background: linear-gradient(135deg, #fbbf24, #f59e0b, #d97706);
}

.book-cover {
    width: 80px;
    height: 110px;
    object-fit: cover;
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px var(--shadow-color);
}

.book-info {
    flex: 1;
    min-width: 0;
}

.book-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.book-author {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.book-price {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.price-current {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--danger);
}

.price-discount {
    font-size: 0.875rem;
    color: var(--text-muted);
    background: rgba(239, 68, 68, 0.1);
    padding: 0.125rem 0.5rem;
    border-radius: 0.25rem;
}

/* Change Indicators */
.change-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
}

.change-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.change-up {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success);
}

.change-down {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.change-new {
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent-primary);
}

/* Mini Chart Container */
.mini-chart-container {
    height: 60px;
    margin-top: 0.75rem;
}

/* Loading */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.page-btn {
    padding: 0.5rem 1rem;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.page-btn:hover,
.page-btn.active {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Snapshots Table */
.snapshots-table {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    overflow: hidden;
}

.snapshots-table table {
    width: 100%;
    border-collapse: collapse;
}

.snapshots-table th,
.snapshots-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.snapshots-table th {
    background: rgba(0, 0, 0, 0.03);
    font-weight: 600;
    font-size: 0.875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.snapshots-table td {
    color: var(--text-primary);
}

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

.snapshots-table tr:hover td {
    background: rgba(99, 102, 241, 0.03);
}

.status-success {
    color: var(--success);
}

.status-failed {
    color: var(--danger);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(8px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 1.5rem;
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 2rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s;
    z-index: 10;
}

.close-btn:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 2rem;
}

.modal-header {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.modal-cover {
    width: 150px;
    height: 200px;
    object-fit: cover;
    border-radius: 0.75rem;
    flex-shrink: 0;
}

.modal-info h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.modal-info .author {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.modal-list-type {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--accent-gradient);
    color: white;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.chart-list-badge {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-primary);
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
    margin-left: 0.5rem;
}

.modal-charts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.chart-container {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 1.5rem;
}

.chart-container h3 {
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--text-secondary);
}

/* Ads Section */
.ads-section {
    padding: 2rem 0;
    background: var(--bg-primary);
}

.ads-section .container {
    text-align: center;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
}

.footer-content {
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 1.25rem;
    font-weight: 600;
}

.footer-logo .logo-icon {
    width: 32px;
    height: 32px;
}

.footer-text {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .date-inputs {
        flex-direction: column;
    }

    .date-inputs button {
        width: 100%;
    }

    .ranking-grid {
        grid-template-columns: 1fr;
    }

    .modal-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .modal-charts {
        grid-template-columns: 1fr;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.book-card {
    animation: fadeIn 0.3s ease forwards;
}

.book-card:nth-child(1) {
    animation-delay: 0.05s;
}

.book-card:nth-child(2) {
    animation-delay: 0.1s;
}

.book-card:nth-child(3) {
    animation-delay: 0.15s;
}

.book-card:nth-child(4) {
    animation-delay: 0.2s;
}

.book-card:nth-child(5) {
    animation-delay: 0.25s;
}