/* 天涯论坛风格主题样式 */

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #f97316;
    --secondary-dark: #ea580c;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --border-color: #e5e7eb;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --radius: 8px;
    --radius-lg: 12px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", sans-serif; background: var(--bg-secondary); color: var(--text-primary); font-size: 14px; line-height: 1.6; min-height: 100vh; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }

/* 顶部导航 */
.tianya-topbar { background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 50%, #2563eb 100%); position: sticky; top: 0; z-index: 1000; box-shadow: var(--shadow-lg); }
.tianya-topbar-inner { max-width: 1400px; margin: 0 auto; padding: 0 20px; }
.tianya-topbar-top { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.1); font-size: 13px; }
.tianya-topbar-welcome { color: rgba(255,255,255,0.8); }
.tianya-topbar-welcome a { color: #fff; font-weight: 500; margin: 0 4px; }
.tianya-topbar-links { display: flex; gap: 20px; }
.tianya-topbar-links a { color: rgba(255,255,255,0.8); font-size: 13px; }
.tianya-topbar-links a:hover { color: #fff; }
.tianya-topbar-main { display: flex; align-items: center; justify-content: space-between; padding: 12px 0; gap: 30px; }
.tianya-logo { flex-shrink: 0; }
.tianya-logo a { display: flex; align-items: center; gap: 10px; }
.tianya-logo-icon { width: 44px; height: 44px; background: linear-gradient(135deg, #f97316, #ea580c); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: bold; font-size: 16px; box-shadow: 0 4px 12px rgba(249, 115, 22, 0.4); }
.tianya-logo-text { color: #fff; font-size: 24px; font-weight: 700; letter-spacing: -0.5px; white-space: nowrap; }
.tianya-logo-text span { color: #fbbf24; }
.tianya-search-container { flex: 1; max-width: 500px; }
.tianya-search-box { display: flex; background: rgba(255,255,255,0.15); border-radius: var(--radius); overflow: hidden; border: 1px solid rgba(255,255,255,0.2); }
.tianya-search-box input { flex: 1; padding: 12px 16px; border: none; background: transparent; color: #fff; font-size: 14px; outline: none; }
.tianya-search-box input::placeholder { color: rgba(255,255,255,0.6); }
.tianya-search-box button { padding: 12px 20px; background: var(--secondary); border: none; color: #fff; font-size: 14px; cursor: pointer; }
.tianya-topbar-actions { display: flex; gap: 12px; flex-shrink: 0; }
.tianya-action-btn { display: inline-flex; align-items: center; gap: 6px; padding: 10px 18px; background: rgba(255,255,255,0.15); color: #fff; border-radius: var(--radius); font-size: 14px; font-weight: 500; transition: all 0.2s; border: 1px solid rgba(255,255,255,0.2); }
.tianya-action-btn:hover { background: rgba(255,255,255,0.25); color: #fff; }
.tianya-action-btn.primary { background: var(--secondary); border-color: var(--secondary); }

/* 主导航 */
.tianya-navbar { background: rgba(0,0,0,0.15); }
.tianya-navbar-inner { max-width: 1400px; margin: 0 auto; padding: 0 20px; }
.tianya-nav-menu { display: flex; list-style: none; gap: 4px; }
.tianya-nav-menu li a { display: block; padding: 14px 18px; color: rgba(255,255,255,0.85); font-size: 14px; font-weight: 500; transition: all 0.2s; border-bottom: 3px solid transparent; }
.tianya-nav-menu li a:hover, .tianya-nav-menu li a.active { color: #fff; background: rgba(255,255,255,0.1); border-bottom-color: var(--secondary); }

/* 主体布局 */
.tianya-main-container { max-width: 1400px; margin: 0 auto; padding: 20px; display: flex; gap: 20px; }
.tianya-content { flex: 1; min-width: 0; }
.tianya-sidebar { width: 300px; flex-shrink: 0; }

/* 卡片 */
.tianya-section-card { background: var(--bg-primary); border-radius: var(--radius-lg); box-shadow: var(--shadow); overflow: hidden; margin-bottom: 20px; }
.tianya-section-header { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--border-color); }
.tianya-section-title { font-size: 16px; font-weight: 600; color: var(--text-primary); display: flex; align-items: center; gap: 8px; }
.tianya-section-title i { color: var(--primary); }

/* 标签页 */
.tianya-thread-tabs { display: flex; gap: 4px; padding: 12px 20px; background: var(--bg-secondary); border-bottom: 1px solid var(--border-color); }
.tianya-thread-tab { padding: 8px 16px; font-size: 13px; color: var(--text-secondary); border-radius: var(--radius); transition: all 0.2s; }
.tianya-thread-tab:hover { color: var(--primary); background: var(--bg-tertiary); }
.tianya-thread-tab.active { color: #fff; background: var(--primary); font-weight: 500; }

/* 帖子列表 */
.tianya-thread-list { }
.tianya-thread-item { display: flex; align-items: flex-start; gap: 16px; padding: 16px 20px; border-bottom: 1px solid var(--border-color); transition: background 0.2s; }
.tianya-thread-item:hover { background: var(--bg-secondary); }
.tianya-thread-item:last-child { border-bottom: none; }
.tianya-thread-avatar { width: 44px; height: 44px; border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 600; font-size: 16px; flex-shrink: 0; }
.tianya-thread-content { flex: 1; min-width: 0; }
.tianya-thread-title { font-size: 15px; line-height: 1.5; margin-bottom: 6px; }
.tianya-thread-title a { color: var(--text-primary); font-weight: 500; }
.tianya-thread-title a:hover { color: var(--primary); }
.tianya-thread-meta { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.tianya-thread-meta a { color: var(--text-secondary); }
.tianya-thread-meta a:hover { color: var(--primary); }
.tianya-thread-board { background: var(--bg-tertiary); padding: 2px 8px; border-radius: 4px; }
.tianya-thread-stats { display: flex; gap: 16px; flex-shrink: 0; }
.tianya-stat-item { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }

/* 分页 */
.tianya-pagination { padding: 20px; text-align: center; }
.tianya-pagination .pagination { display: inline-flex; gap: 4px; list-style: none; margin: 0; padding: 0; }

/* 用户卡片 */
.tianya-user-card { background: var(--bg-primary); border-radius: var(--radius-lg); box-shadow: var(--shadow); overflow: hidden; margin-bottom: 20px; }
.tianya-user-card-header { background: linear-gradient(135deg, #1e3a8a, #2563eb); padding: 24px 20px; text-align: center; }
.tianya-user-avatar-lg { width: 64px; height: 64px; background: rgba(255,255,255,0.2); border-radius: 50%; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 24px; font-weight: 600; margin: 0 auto 12px; }
.tianya-user-name-lg { color: #fff; font-size: 18px; font-weight: 600; }
.tianya-user-card-body { padding: 20px; }
.tianya-user-stats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
.tianya-user-stat-box { text-align: center; }
.tianya-user-stat-box .num { font-size: 20px; font-weight: 700; color: var(--text-primary); }
.tianya-user-stat-box .label { font-size: 12px; color: var(--text-muted); }
.tianya-checkin-btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; width: 100%; padding: 12px; background: linear-gradient(135deg, var(--secondary), var(--secondary-dark)); color: #fff; border: none; border-radius: var(--radius); font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.2s; text-decoration: none; }
.tianya-checkin-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(249, 115, 22, 0.4); color: #fff; }

/* 快捷菜单 */
.tianya-quick-menu { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-bottom: 16px; }
.tianya-quick-item { display: flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 8px; background: var(--bg-secondary); border-radius: var(--radius); font-size: 12px; color: var(--text-secondary); transition: all 0.2s; }
.tianya-quick-item:hover { background: var(--primary); color: #fff; }

/* 标签链接 */
.tianya-tag-link { display: inline-block; padding: 6px 12px; margin: 4px; background: var(--bg-secondary); border-radius: var(--radius); font-size: 13px; color: var(--text-primary); transition: all 0.2s; }
.tianya-tag-link:hover { background: var(--primary); color: #fff; }
.tianya-tag-link.active { background: var(--primary); color: #fff; }

/* 底部 */
.tianya-footer { background: var(--bg-primary); border-top: 1px solid var(--border-color); padding: 30px 20px; margin-top: 40px; }
.tianya-footer-inner { max-width: 1400px; margin: 0 auto; text-align: center; }
.tianya-footer-links { margin-bottom: 12px; }
.tianya-footer-links a { color: var(--text-secondary); margin: 0 10px; font-size: 13px; }
.tianya-footer-copyright { color: var(--text-muted); font-size: 12px; }
.tianya-footer-copyright a { color: var(--text-secondary); }

/* 返回顶部 */
.tianya-backtop { position: fixed; bottom: 30px; right: 30px; width: 44px; height: 44px; background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; cursor: pointer; box-shadow: var(--shadow-md); z-index: 999; }

/* 统计卡片 */
.tianya-stats-body { padding: 16px 20px; }
.tianya-stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.tianya-stats-item { text-align: center; padding: 12px; background: var(--bg-secondary); border-radius: var(--radius); }
.tianya-stats-item .num { font-size: 20px; font-weight: 700; color: var(--primary); }
.tianya-stats-item .label { font-size: 12px; color: var(--text-muted); margin-top: 4px; }

/* 标签列表 */
.tianya-tag-list { padding: 12px; }

/* 空状态 */
.tianya-empty-state { padding: 60px 20px; text-align: center; color: var(--text-muted); }
.tianya-empty-state i { font-size: 48px; margin-bottom: 16px; opacity: 0.3; }

/* 按钮 */
.tianya-btn { display: inline-flex; align-items: center; gap: 6px; padding: 12px 24px; border-radius: var(--radius); font-size: 14px; font-weight: 600; cursor: pointer; transition: all 0.2s; border: none; text-decoration: none; }
.tianya-btn-primary { background: var(--primary); color: #fff; }
.tianya-btn-primary:hover { background: var(--primary-dark); }

/* 响应式 */
@media (max-width: 1024px) {
    .tianya-sidebar { display: none; }
    .tianya-topbar-top { display: none; }
    .tianya-search-container { max-width: 300px; }
}
@media (max-width: 768px) {
    .tianya-topbar-main { flex-wrap: wrap; gap: 12px; }
    .tianya-search-container { order: 3; max-width: 100%; flex-basis: 100%; }
    .tianya-nav-menu { overflow-x: auto; }
    .tianya-nav-menu li a { padding: 12px 14px; white-space: nowrap; }
    .tianya-main-container { padding: 12px; }
    .tianya-thread-item { padding: 12px; }
    .tianya-thread-stats { display: none; }
}