/* ===== 全局重置 & 变量 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #2d6db5;          /* 主蓝色 */
    --primary-light: #e6f0fa;
    --bg: #f2f7fc;
    --card-bg: #ffffff;
    --text: #1a2a3a;
    --text-light: #5a6a7a;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    --radius: 10px;
    --transition: 0.2s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    padding: 0 20px 20px;
    min-height: 100vh;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 16px;
}

/* ===== 顶部工具栏 ===== */
.topbar {
    background: #f0f5fb;
    border-bottom: 1px solid #d9e2ec;
    padding: 6px 0;
    font-size: 0.85rem;
    color: var(--text-light);
}
.topbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}
.topbar-left a, .topbar-right a {
    color: var(--text-light);
    text-decoration: none;
    margin-right: 14px;
}
.topbar-left a:hover, .topbar-right a:hover {
    color: var(--primary);
    text-decoration: underline;
}
.topbar-center {
    font-size: 0.85rem;
    color: #666;
}

/* ===== 主头部 ===== */
.header {
    background: var(--card-bg);
    padding: 12px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.03);
    margin: 12px 0 16px;
    border-radius: var(--radius);
}
.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary);
}
.logo-icon { font-size: 2rem; }
.logo-text { letter-spacing: 1px; }

.header-weather {
    display: flex;
    gap: 18px;
    font-size: 0.95rem;
    color: var(--text);
}
.header-weather span {
    background: var(--bg);
    padding: 4px 12px;
    border-radius: 20px;
}
.header-login {
    display: flex;
    gap: 6px;
    align-items: center;
}
.header-login input {
    padding: 4px 10px;
    border: 1px solid #d0d8e0;
    border-radius: 4px;
    font-size: 0.9rem;
    background: #fff;
    width: 110px;
}
.header-login button {
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 4px;
    padding: 4px 16px;
    cursor: pointer;
    font-size: 0.9rem;
}
.header-login button:hover {
    background: #1f5a9e;
}

/* ===== 搜索区域 ===== */
.search-section {
    margin-bottom: 28px;
}
.search-box {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px 24px 16px;
    text-align: center;
}
.search-tags {
    display: flex;
    justify-content: center;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 10px;
}
.search-tags span {
    cursor: default;
}
.search-tags .active {
    color: var(--primary);
    font-weight: 600;
}
.search-tags span:hover {
    color: var(--primary);
}
.search-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 12px;
}
.search-tab {
    background: transparent;
    border: 2px solid transparent;
    padding: 4px 18px;
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    transition: var(--transition);
}
.search-tab:hover { background: var(--bg); }
.search-tab.active {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}
.search-form {
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 580px;
    margin: 0 auto 12px;
    border-radius: 30px;
    background: var(--bg);
    padding: 2px 2px 2px 18px;
    border: 2px solid #d0d8e0;
    transition: var(--transition);
}
.search-form:focus-within {
    border-color: var(--primary);
    background: #fff;
}
.search-input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 10px 6px;
    font-size: 1rem;
    outline: none;
    color: var(--text);
}
.search-input::placeholder { color: #b0b8c0; }
.search-btn {
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 30px;
    padding: 10px 28px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}
.search-btn:hover { background: #1f5a9e; }

.search-hot {
    font-size: 0.9rem;
    color: var(--text-light);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 16px;
    margin-bottom: 10px;
}
.search-hot a {
    color: var(--primary);
    text-decoration: none;
}
.search-hot a:hover { text-decoration: underline; }

/* ★★★ 收藏网站横条 ★★★ */
.favorite-sites {
    font-size: 0.9rem;
    color: var(--text-light);
    border-top: 1px solid #e8edf3;
    padding-top: 12px;
    margin-top: 4px;
}
.favorite-sites span {
    color: var(--text);
    font-weight: 500;
}
.favorite-sites a {
    color: var(--primary);
    text-decoration: none;
    margin: 0 8px;
}
.favorite-sites a:hover {
    text-decoration: underline;
}

/* ===== 分类卡片 ===== */
.categories {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 8px;
}
.category-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 16px 14px;
    border: 1px solid #e8edf3;
    transition: var(--transition);
}
.category-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}
.category-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary-light);
}
.category-icon { font-size: 1.4rem; }
.category-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
}
.category-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.category-links li a {
    display: block;
    padding: 4px 8px;
    border-radius: 4px;
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}
.category-links li a:hover {
    background: var(--primary-light);
    color: var(--primary);
    padding-left: 14px;
}

/* ===== 底部 ===== */
.footer {
    margin-top: 48px;
    padding: 24px 0 16px;
    border-top: 1px solid #d9e2ec;
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
}
.footer-text { margin-bottom: 6px; }
.footer-meta a {
    color: var(--primary);
    text-decoration: none;
}
.footer-meta a:hover { text-decoration: underline; }

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .topbar-inner { flex-direction: column; gap: 4px; }
    .header-inner { flex-direction: column; align-items: stretch; }
    .header-weather { justify-content: center; }
    .header-login { justify-content: center; }
    .header-login input { width: 100px; }
    .search-box { padding: 16px; }
    .search-tags { flex-wrap: wrap; gap: 6px; }
    .search-form { flex-wrap: nowrap; }
    .categories { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; }
}