/* CSS Variables - Light Theme (Default) */
:root {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;
    --bg-hover: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);
    --success: #10b981;
    --success-bg: #d1fae5;
    --danger: #ef4444;
    --danger-bg: #fee2e2;
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    --info: #3b82f6;
    --info-bg: #dbeafe;
    --sidebar-width: 260px;
    --header-height: 70px;
    --transition: all 0.2s ease;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-hover: #475569;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #334155;
    --border-light: #1e293b;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --success-bg: rgba(16, 185, 129, 0.2);
    --danger-bg: rgba(239, 68, 68, 0.2);
    --warning-bg: rgba(245, 158, 11, 0.2);
    --info-bg: rgba(59, 130, 246, 0.2);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    transition: var(--transition);
}

/* App Container */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition);
    font-weight: 500;
}

.nav-item:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--accent-gradient);
    color: white;
}

.nav-item.active svg {
    stroke: white;
}

.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
}

.theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.875rem;
    font-weight: 500;
}

.theme-toggle:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.moon-icon {
    display: none;
}

[data-theme="dark"] .sun-icon {
    display: none;
}

[data-theme="dark"] .moon-icon {
    display: block;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.main-header {
    height: var(--header-height);
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-left h1 {
    font-size: 1.5rem;
    font-weight: 600;
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0.5rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.search-box {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    padding: 0.5rem 1rem;
    min-width: 280px;
}

.search-box svg {
    color: var(--text-muted);
}

.search-box input {
    border: none;
    background: none;
    outline: none;
    color: var(--text-primary);
    font-size: 0.875rem;
    width: 100%;
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-decoration: none;
}

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

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-hover);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    opacity: 0.9;
}

/* View Content */
.view-content {
    flex: 1;
    padding: 1.5rem;
}

.view-content.hidden {
    display: none;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.stat-icon.total {
    background: var(--info-bg);
    color: var(--info);
}

.stat-icon.online {
    background: var(--success-bg);
    color: var(--success);
}

.stat-icon.offline {
    background: var(--danger-bg);
    color: var(--danger);
}

.stat-icon.favorites {
    background: var(--warning-bg);
    color: var(--warning);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

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

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Dashboard Sections */
.dashboard-sections {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

.dashboard-section {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.section-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
}

.view-all {
    color: var(--accent-primary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
}

.view-all:hover {
    text-decoration: underline;
}

/* Websites Grid */
.websites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1rem;
}

.website-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.25rem;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
}

.website-card:hover {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg);
}

.website-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.75rem;
}

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

.website-name {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.website-name .favorite-star {
    color: var(--warning);
}

.website-url {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.website-url a {
    color: var(--text-secondary);
    text-decoration: none;
}

.website-url a:hover {
    color: var(--accent-primary);
}

.website-status {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.625rem;
    border-radius: 20px;
    text-transform: uppercase;
}

.website-status.online {
    background: var(--success-bg);
    color: var(--success);
}

.website-status.offline {
    background: var(--danger-bg);
    color: var(--danger);
}

.status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
}

.website-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.website-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-light);
}

.website-category {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.75rem;
    padding: 0.25rem 0.625rem;
    border-radius: 6px;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.category-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.website-visits {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.website-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

.action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    padding: 0.5rem;
    border: none;
    border-radius: 6px;
    font-size: 0.8125rem;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

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

.action-btn.edit:hover {
    background: var(--info-bg);
    color: var(--info);
}

.action-btn.delete:hover {
    background: var(--danger-bg);
    color: var(--danger);
}

.action-btn.favorite:hover,
.action-btn.favorite.active {
    background: var(--warning-bg);
    color: var(--warning);
}

/* Filter Bar */
.filter-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-group label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.filter-group select {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
}

/* Categories */
.categories-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.category-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    transition: var(--transition);
}

.category-item:hover {
    background: var(--bg-hover);
}

.category-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.category-color {
    width: 12px;
    height: 12px;
    border-radius: 4px;
}

.category-name {
    font-weight: 500;
    color: var(--text-primary);
}

.category-count {
    font-size: 0.875rem;
    color: var(--text-muted);
    background: var(--bg-secondary);
    padding: 0.25rem 0.625rem;
    border-radius: 12px;
}

/* Categories Manager */
.categories-manager {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.add-category-form {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.add-category-form input[type="text"] {
    flex: 1;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.add-category-form input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.add-category-form input[type="color"] {
    width: 48px;
    height: 42px;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
}

.category-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.category-card-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.category-card-color {
    width: 16px;
    height: 16px;
    border-radius: 4px;
}

.category-card-details h4 {
    font-size: 0.9375rem;
    font-weight: 500;
    margin-bottom: 0.125rem;
}

.category-card-details span {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.category-card-actions {
    display: flex;
    gap: 0.5rem;
}

.category-action-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

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

.category-action-btn.delete:hover {
    background: var(--danger-bg);
    color: var(--danger);
}

/* Analytics */
.analytics-dashboard {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
}

.analytics-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.analytics-card {
    background: var(--bg-tertiary);
    padding: 1.25rem;
    border-radius: 8px;
    text-align: center;
}

.analytics-card h3 {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.analytics-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.analytics-table-wrapper {
    overflow-x: auto;
}

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

.analytics-table th,
.analytics-table td {
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.analytics-table th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.analytics-table td {
    font-size: 0.875rem;
}

.analytics-table tbody tr:hover {
    background: var(--bg-tertiary);
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
    backdrop-filter: blur(4px);
}

.modal-overlay.hidden {
    display: none;
}

.modal {
    background: var(--bg-secondary);
    border-radius: 16px;
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-small {
    max-width: 400px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 6px;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: 1.5rem;
}

.modal-body p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

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

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* Form */
form {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 0.875rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--bg-secondary);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--success);
    z-index: 2000;
    animation: slideIn 0.3s ease;
}

.toast.hidden {
    display: none;
}

.toast.error {
    border-left-color: var(--danger);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-secondary);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.empty-state p {
    margin-bottom: 1rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .dashboard-sections {
        grid-template-columns: 1fr;
    }

    .search-box {
        min-width: 200px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .header-right {
        gap: 0.5rem;
    }

    .search-box {
        display: none;
    }

    .btn span {
        display: none;
    }

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

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .filter-bar {
        flex-direction: column;
    }

    .add-category-form {
        flex-direction: column;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .modal {
        margin: 0.5rem;
    }
}

/* SEO Ranking Styles */
.seo-section {
    margin: 10px 0;
    padding: 8px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.seo-rank-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.rank-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.rank-change {
    font-size: 0.85rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 4px;
}

.rank-up {
    background: var(--success-bg);
    color: var(--success);
}

.rank-down {
    background: var(--danger-bg);
    color: var(--danger);
}

.rank-neutral {
    background: var(--bg-hover);
    color: var(--text-muted);
}

.seo-badge.unknown {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-style: italic;
}