:root {
    --primary: #6c8cff;
    --primary-dark: #5a78e8;
    --primary-light: #1e2030;
    --bg: #1a1b2e;
    --card-bg: #232540;
    --text: #e0e0e0;
    --text-secondary: #a0a0b8;
    --text-muted: #6a6a80;
    --border: #2a2d45;
    --shadow: 0 2px 12px rgba(0,0,0,0.3);
    --header-bg: #1e1f35;
    --footer-bg: #151628;
    --footer-text: #6a6a80;
    --tag-bg: #2a2d50;
    --tag-text: #6c8cff;
    --hover-bg: #2a2d48;
    --badge-bg: #6c8cff;
    --badge-text: #ffffff;
    --input-bg: #1e2030;
    --input-border: #3a3d55;
    --modal-overlay: rgba(0,0,0,0.7);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; width: 100%; }

.header {
    background: var(--header-bg);
    box-shadow: 0 1px 4px rgba(0,0,0,0.3);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
}
.header-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}
.header-logo:hover { text-decoration: none; }
.header-logo img { height: 36px; }
.header-actions { display: flex; gap: 10px; align-items: center; }

.search-box {
    display: flex;
    align-items: center;
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: 24px;
    padding: 6px 6px 6px 16px;
    transition: border-color 0.3s;
}
.search-box:focus-within { border-color: var(--primary); }
.search-box input {
    border: none;
    outline: none;
    background: transparent;
    font-size: 14px;
    width: 220px;
    color: var(--text);
}
.search-box button {
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 20px;
    padding: 8px 20px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.2s;
}
.search-box button:hover { background: var(--primary-dark); }

.hero {
    text-align: center;
    padding: 50px 0 30px;
}
.hero h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}
.hero p {
    font-size: 15px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.category-nav {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 30px;
}
.category-nav a {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-secondary);
    background: var(--card-bg);
    border: 1px solid var(--border);
    transition: all 0.2s;
    text-decoration: none;
}
.category-nav a:hover,
.category-nav a.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    text-decoration: none;
}

.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
}

.site-card {
    background: var(--card-bg);
    border-radius: 10px;
    padding: 18px;
    box-shadow: var(--shadow);
    transition: all 0.25s;
    cursor: pointer;
    border: 1px solid var(--border);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    text-decoration: none;
    color: var(--text);
}
.site-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.4);
    text-decoration: none;
    background: var(--hover-bg);
}
.site-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    flex-shrink: 0;
    background: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.site-icon img {
    width: 28px;
    height: 28px;
    object-fit: contain;
}
.site-icon .icon-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--primary);
}
.site-info { flex: 1; min-width: 0; }
.site-info h3 {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.site-info p {
    font-size: 12px;
    color: var(--text-muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}
.site-tag {
    display: inline-block;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--tag-bg);
    color: var(--tag-text);
    margin-top: 4px;
}

.pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin: 30px 0;
}
.pagination a, .pagination span {
    display: inline-block;
    padding: 8px 14px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: var(--text);
    font-size: 14px;
    text-decoration: none;
    transition: all 0.2s;
}
.pagination a:hover { background: var(--primary-light); text-decoration: none; }
.pagination .active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.footer {
    background: var(--footer-bg);
    color: var(--footer-text);
    text-align: center;
    padding: 20px;
    margin-top: auto;
    font-size: 13px;
}

.category-section {
    margin-bottom: 35px;
}
.category-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary);
}
.category-section-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}
.category-icon {
    font-size: 22px;
}
.category-count {
    font-size: 13px;
    color: var(--text-muted);
    background: var(--card-bg);
    padding: 4px 12px;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.btn {
    display: inline-block;
    padding: 8px 18px;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: var(--text);
    transition: all 0.2s;
    text-decoration: none;
}
.btn:hover { opacity: 0.85; text-decoration: none; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }

.modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--modal-overlay);
    z-index: 200;
    align-items: center;
    justify-content: center;
}
.modal-overlay.show { display: flex; }
.modal {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    width: 90%;
    max-width: 520px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.modal h2 { font-size: 20px; margin-bottom: 20px; text-align: center; }
.modal .form-group { margin-bottom: 16px; }
.modal .form-group label { display: block; margin-bottom: 5px; font-weight: 500; font-size: 13px; color: var(--text-secondary); }
.modal .form-group input,
.modal .form-group select,
.modal .form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--input-border);
    border-radius: 6px;
    font-size: 14px;
    background: var(--input-bg);
    color: var(--text);
    transition: border-color 0.2s;
}
.modal .form-group input:focus,
.modal .form-group select:focus,
.modal .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}
.modal .form-group textarea { resize: vertical; }
.modal .form-actions { display: flex; gap: 10px; justify-content: center; margin-top: 20px; }
.modal .fetch-btn { font-size: 12px; padding: 4px 10px; margin-left: 8px; }
.modal .fetch-status { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state .icon { font-size: 48px; margin-bottom: 15px; }
.empty-state p { font-size: 15px; }

.toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    padding: 12px 24px;
    border-radius: 8px;
    color: #fff;
    font-size: 14px;
    z-index: 300;
    display: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.4);
}
.toast.show { display: block; animation: toastIn 0.3s ease; }
.toast.success { background: #27ae60; }
.toast.error { background: #e74c3c; }

@keyframes toastIn {
    from { opacity: 0; transform: translateX(-50%) translateY(-10px); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

@media (max-width: 768px) {
    .header-inner { flex-wrap: wrap; gap: 10px; }
    .search-box input { width: 140px; }
    .hero h1 { font-size: 24px; }
    .sites-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 10px; }
    .site-card { padding: 12px; }
    .site-icon { width: 32px; height: 32px; }
    .site-icon img { width: 22px; height: 22px; }
    .site-info h3 { font-size: 13px; }
}