/* ===================================
   AI Tools Directory - Main Stylesheet
   =================================== */

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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #e0e7ff;
    --secondary: #0f172a;
    --text: #1e293b;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --bg: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow: 0 1px 3px 0 rgba(0,0,0,0.08), 0 1px 2px -1px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.05);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;
    --transition: 0.2s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Buttons */
.btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 10px 20px; border-radius: var(--radius-sm);
    font-weight: 600; font-size: 14px; cursor: pointer;
    border: none; transition: all var(--transition);
    font-family: inherit;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-secondary { background: var(--bg-secondary); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border-light); }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-lg { padding: 14px 28px; font-size: 16px; }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }

/* Header */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.92); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.site-header .container {
    display: flex; align-items: center; justify-content: space-between;
    height: 68px;
}
.logo { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 22px; color: var(--secondary); }
.logo-icon { font-size: 26px; }
.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav a {
    padding: 8px 16px; border-radius: var(--radius-sm);
    font-weight: 500; font-size: 14px; color: var(--text-light);
    transition: all var(--transition);
}
.main-nav a:hover, .main-nav a.active { color: var(--primary); background: var(--primary-light); }
.main-nav .btn-primary:hover { color: #fff; background: var(--primary-dark); }

.mobile-menu-toggle, .mobile-menu, .mobile-menu-close { display: none; }

/* Hero Section */
.hero {
    padding: 80px 0 60px; text-align: center;
    background: linear-gradient(135deg, #f8fafc 0%, #e0e7ff 50%, #f8fafc 100%);
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 14px; border-radius: 99px;
    background: var(--primary-light); color: var(--primary-dark);
    font-size: 13px; font-weight: 600; margin-bottom: 20px;
}
.hero h1 {
    font-size: 48px; font-weight: 800; line-height: 1.15;
    color: var(--secondary); margin-bottom: 16px; letter-spacing: -0.02em;
}
.hero h1 span { background: linear-gradient(135deg, var(--primary), #a855f7); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero p {
    font-size: 18px; color: var(--text-light); max-width: 600px;
    margin: 0 auto 32px; line-height: 1.7;
}
.hero-stats { display: flex; justify-content: center; gap: 48px; margin-top: 40px; }
.hero-stat { text-align: center; }
.hero-stat .num { font-size: 32px; font-weight: 800; color: var(--secondary); }
.hero-stat .label { font-size: 14px; color: var(--text-light); }

/* Search */
.search-section { max-width: 680px; margin: 0 auto; }
.search-form { position: relative; }
.search-form input[type="text"] {
    width: 100%; padding: 16px 56px 16px 20px;
    border: 2px solid var(--border); border-radius: var(--radius-lg);
    font-size: 16px; font-family: inherit;
    background: var(--bg); box-shadow: var(--shadow-lg);
    transition: all var(--transition);
}
.search-form input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgba(99,102,241,0.1); }
.search-form button {
    position: absolute; right: 8px; top: 8px;
    width: 44px; height: 44px; border: none; border-radius: var(--radius-sm);
    background: var(--primary); color: #fff; font-size: 18px;
    cursor: pointer; transition: background var(--transition);
}
.search-form button:hover { background: var(--primary-dark); }

/* Section Headers */
.section-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 32px;
}
.section-header h2 { font-size: 28px; font-weight: 700; }
.section-header .view-all { font-weight: 600; font-size: 14px; color: var(--primary); }
.section-header .view-all:hover { text-decoration: underline; }

/* Category Cards */
.categories-section { padding: 60px 0; }
.category-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}
.category-card {
    display: flex; flex-direction: column; align-items: center; gap: 10px;
    padding: 24px 16px; border-radius: var(--radius); border: 1px solid var(--border);
    background: var(--bg); text-align: center; transition: all var(--transition);
}
.category-card:hover { border-color: var(--primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.category-card .cat-icon { font-size: 36px; }
.category-card .cat-name { font-weight: 600; font-size: 14px; }
.category-card .cat-count { font-size: 12px; color: var(--text-muted); }

/* Tool Cards */
.tools-section { padding: 60px 0; }
.tools-section.alt { background: var(--bg-secondary); }
.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}
.tool-card {
    background: var(--bg-card); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px;
    transition: all var(--transition); position: relative;
}
.tool-card:hover { border-color: var(--primary); box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.tool-card.featured { border-color: #fbbf24; }
.tool-card-header { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 14px; }
.tool-logo {
    width: 52px; height: 52px; border-radius: 12px; object-fit: cover;
    background: var(--bg-secondary); flex-shrink: 0;
}
.tool-card-header h3 { font-size: 17px; font-weight: 600; line-height: 1.3; }
.tool-card-header .tool-domain { font-size: 12px; color: var(--text-muted); display: block; }
.tool-card p { font-size: 14px; color: var(--text-light); margin-bottom: 14px; line-height: 1.5; }
.tool-card-footer { display: flex; justify-content: space-between; align-items: center; }
.tool-card-meta { display: flex; align-items: center; gap: 8px; }

/* Badges */
.badge {
    display: inline-block; padding: 3px 10px; border-radius: 99px;
    font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.02em;
}
.badge-green { background: #dcfce7; color: #166534; }
.badge-blue { background: #dbeafe; color: #1e40af; }
.badge-purple { background: #f3e8ff; color: #6b21a8; }
.badge-orange { background: #fff7ed; color: #9a3412; }
.badge-gray { background: #f1f5f9; color: #475569; }
.badge-featured {
    position: absolute; top: 12px; right: 12px;
    background: #fef3c7; color: #92400e;
    padding: 3px 10px; border-radius: 99px;
    font-size: 11px; font-weight: 600; text-transform: uppercase;
}

/* Star Ratings */
.stars { font-size: 14px; letter-spacing: 1px; }
.stars .full { color: #f59e0b; }
.stars .half { color: #f59e0b; }
.stars .empty { color: #d1d5db; }
.rating-num { font-size: 13px; font-weight: 600; color: var(--text-light); }

/* Pages */
.page-header { padding: 48px 0 40px; background: var(--bg-secondary); border-bottom: 1px solid var(--border); }
.page-header h1 { font-size: 32px; font-weight: 700; }
.page-header p { color: var(--text-light); margin-top: 8px; }
.page-content { padding: 40px 0 60px; }

/* Filter Bar */
.filter-bar {
    display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
    padding: 16px 20px; background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius); margin-bottom: 24px;
}
.filter-bar select, .filter-bar input {
    padding: 8px 14px; border: 1px solid var(--border);
    border-radius: var(--radius-sm); font-size: 14px; font-family: inherit;
    background: var(--bg); color: var(--text);
}
.filter-bar select:focus, .filter-bar input:focus { outline: none; border-color: var(--primary); }
.filter-bar .filter-label { font-size: 13px; font-weight: 600; color: var(--text-muted); }

/* Tool Detail */
.tool-detail { padding: 40px 0; }
.tool-detail-header {
    display: flex; gap: 24px; align-items: flex-start;
    padding-bottom: 32px; border-bottom: 1px solid var(--border);
    margin-bottom: 32px;
}
.tool-detail-logo {
    width: 100px; height: 100px; border-radius: 20px; object-fit: cover;
    background: var(--bg-secondary); flex-shrink: 0;
}
.tool-detail-info h1 { font-size: 32px; font-weight: 700; margin-bottom: 8px; }
.tool-detail-info .category-link { color: var(--primary); font-weight: 500; font-size: 14px; }
.tool-detail-info .description { color: var(--text-light); font-size: 16px; margin: 12px 0; line-height: 1.6; }
.tool-detail-meta { display: flex; gap: 24px; align-items: center; margin-top: 12px; flex-wrap: wrap; }
.tool-detail-body { display: grid; grid-template-columns: 1fr 300px; gap: 40px; }
.tool-detail-body .features h3 { font-size: 20px; font-weight: 600; margin-bottom: 16px; }
.tool-detail-body .features ul { list-style: none; }
.tool-detail-body .features li {
    padding: 10px 0; border-bottom: 1px solid var(--border-light);
    font-size: 15px; display: flex; align-items: center; gap: 10px;
}
.tool-detail-body .features li::before { content: '✓'; color: #22c55e; font-weight: 700; }
.tool-sidebar { display: flex; flex-direction: column; gap: 16px; }
.tool-sidebar .sidebar-card {
    padding: 20px; background: var(--bg-secondary); border-radius: var(--radius);
    border: 1px solid var(--border);
}
.tool-sidebar .sidebar-card h4 { font-size: 14px; font-weight: 600; margin-bottom: 12px; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.04em; }
.visit-btn { width: 100%; text-align: center; justify-content: center; }

/* Breadcrumb */
.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 14px; color: var(--text-muted); margin-bottom: 24px; }
.breadcrumb a { color: var(--text-light); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: var(--text-muted); }

/* Pagination */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.pagination a, .pagination span {
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: var(--radius-sm);
    font-size: 14px; font-weight: 500; border: 1px solid var(--border);
    transition: all var(--transition);
}
.pagination a:hover { border-color: var(--primary); color: var(--primary); }
.pagination .active { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .disabled { opacity: 0.4; pointer-events: none; }

/* Forms */
.form-page { max-width: 640px; margin: 0 auto; padding: 40px 0; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; font-size: 14px; margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 12px 16px; border: 1px solid var(--border);
    border-radius: var(--radius-sm); font-size: 14px; font-family: inherit;
    transition: border-color var(--transition);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* Alerts */
.alert {
    padding: 14px 20px; border-radius: var(--radius-sm);
    margin-bottom: 20px; font-size: 14px; font-weight: 500;
}
.alert-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.alert-info { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }

/* Footer */
.site-footer { background: var(--secondary); color: #cbd5e1; padding: 60px 0 0; margin-top: 60px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 16px; }
.footer-col p { font-size: 14px; line-height: 1.7; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: 14px; color: #94a3b8; transition: color var(--transition); }
.footer-col ul li a:hover { color: #fff; }
.footer-bottom { padding: 24px 0; border-top: 1px solid rgba(255,255,255,0.08); margin-top: 40px; text-align: center; font-size: 13px; color: #64748b; }

.newsletter-form { display: flex; gap: 8px; margin-top: 12px; }
.newsletter-form input {
    flex: 1; padding: 10px 14px; border: 1px solid rgba(255,255,255,0.15);
    border-radius: var(--radius-sm); font-size: 14px; font-family: inherit;
    background: rgba(255,255,255,0.05); color: #fff;
}
.newsletter-form input:focus { outline: none; border-color: var(--primary); }
.newsletter-form input::placeholder { color: #64748b; }

/* Admin Styles */
.admin-body { background: var(--bg-secondary); }
.admin-header { background: var(--secondary); color: #fff; padding: 0 24px; }
.admin-header .container { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.admin-header .logo { color: #fff; }
.admin-header .admin-user { display: flex; align-items: center; gap: 16px; font-size: 14px; }
.admin-header .admin-user a { color: #94a3b8; }
.admin-header .admin-user a:hover { color: #fff; }
.admin-layout { display: flex; min-height: calc(100vh - 60px); }
.admin-sidebar {
    width: 240px; background: #fff; border-right: 1px solid var(--border);
    padding: 20px 0; flex-shrink: 0;
}
.admin-sidebar nav a {
    display: flex; align-items: center; gap: 10px;
    padding: 12px 24px; font-size: 14px; font-weight: 500;
    color: var(--text-light); transition: all var(--transition);
}
.admin-sidebar nav a:hover, .admin-sidebar nav a.active { color: var(--primary); background: var(--primary-light); }
.admin-content { flex: 1; padding: 32px; overflow-x: auto; }

.admin-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    padding: 20px;
}
.stat-card .stat-num { font-size: 32px; font-weight: 800; color: var(--secondary); }
.stat-card .stat-label { font-size: 13px; color: var(--text-muted); margin-top: 4px; }

/* Tables */
.table-wrapper { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: auto; }
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th {
    text-align: left; padding: 14px 20px; font-size: 12px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted);
    background: var(--bg-secondary); border-bottom: 1px solid var(--border);
}
.admin-table td { padding: 12px 20px; font-size: 14px; border-bottom: 1px solid var(--border-light); }
.admin-table tr:last-child td { border-bottom: none; }
.admin-table tr:hover td { background: var(--bg-secondary); }

.admin-actions { display: flex; gap: 6px; }
.admin-actions a, .admin-actions button {
    padding: 4px 12px; border-radius: 4px; font-size: 13px; font-weight: 500;
    border: none; cursor: pointer; font-family: inherit;
}
.btn-edit { background: #dbeafe; color: #1e40af; }
.btn-edit:hover { background: #bfdbfe; }
.btn-delete { background: #fef2f2; color: #991b1b; }
.btn-delete:hover { background: #fecaca; }
.btn-approve { background: #dcfce7; color: #166534; }
.btn-approve:hover { background: #bbf7d0; }
.btn-reject { background: #fef2f2; color: #991b1b; }
.btn-reject:hover { background: #fecaca; }

/* Login Page */
.login-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg-secondary); }
.login-card {
    background: #fff; border-radius: var(--radius-lg); padding: 40px;
    width: 100%; max-width: 400px; box-shadow: var(--shadow-lg);
}
.login-card h1 { font-size: 24px; font-weight: 700; margin-bottom: 8px; text-align: center; }
.login-card .subtitle { color: var(--text-muted); font-size: 14px; text-align: center; margin-bottom: 28px; }

/* Empty State */
.empty-state { text-align: center; padding: 60px 20px; }
.empty-state .empty-icon { font-size: 48px; margin-bottom: 16px; }
.empty-state h3 { font-size: 20px; margin-bottom: 8px; }
.empty-state p { color: var(--text-light); }

/* Toast */
.toast {
    position: fixed; bottom: 24px; right: 24px;
    padding: 14px 24px; border-radius: var(--radius-sm);
    background: var(--secondary); color: #fff;
    font-size: 14px; font-weight: 500; z-index: 9999;
    animation: slideUp 0.3s ease; box-shadow: var(--shadow-lg);
}
@keyframes slideUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.toast-success { background: #166534; }
.toast-error { background: #991b1b; }

/* Responsive */
@media (max-width: 1024px) {
    .tool-detail-body { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .hero h1 { font-size: 32px; }
    .hero p { font-size: 16px; }
    .hero-stats { gap: 24px; }
    .hero-stat .num { font-size: 24px; }
    .main-nav { display: none; }
    .mobile-menu-toggle {
        display: flex; flex-direction: column; gap: 4px;
        background: none; border: none; cursor: pointer; padding: 8px;
    }
    .mobile-menu-toggle span {
        display: block; width: 22px; height: 2px;
        background: var(--text); border-radius: 2px; transition: all var(--transition);
    }
    .mobile-menu {
        display: block; position: fixed; top: 0; right: -100%;
        width: 280px; height: 100vh; background: #fff; z-index: 1000;
        padding: 24px; transition: right 0.3s ease; box-shadow: var(--shadow-lg);
    }
    .mobile-menu.open { right: 0; }
    .mobile-menu-close {
        display: block; position: absolute; top: 16px; right: 16px;
        background: none; border: none; font-size: 28px; cursor: pointer;
    }
    .mobile-menu nav { display: flex; flex-direction: column; gap: 4px; margin-top: 48px; }
    .mobile-menu nav a {
        display: block; padding: 12px 16px; border-radius: var(--radius-sm);
        font-weight: 500; color: var(--text);
    }
    .mobile-menu nav a:hover { background: var(--bg-secondary); }
    .tool-grid { grid-template-columns: 1fr; }
    .category-grid { grid-template-columns: repeat(3, 1fr); }
    .tool-detail-header { flex-direction: column; }
    .filter-bar { flex-direction: column; }
    .footer-grid { grid-template-columns: 1fr; }
    .admin-layout { flex-direction: column; }
    .admin-sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--border); }
    .admin-sidebar nav { display: flex; overflow-x: auto; }
    .admin-sidebar nav a { white-space: nowrap; }
}

@media (max-width: 480px) {
    .hero { padding: 48px 0 32px; }
    .hero h1 { font-size: 26px; }
    .category-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-stats { flex-direction: column; gap: 12px; }
}