/* ==========================================
   科技感主题覆盖层 - 应用于已有页面，使其外观与首页/AI 应用中心一致
   - 不动 HTML 结构，只用选择器覆盖颜色 / 边框 / 阴影 / 背景
   ========================================== */

[data-theme="dark"] body {
    background:
        radial-gradient(circle at 15% 8%, rgba(43, 124, 238, 0.15), transparent 55%),
        radial-gradient(circle at 88% 12%, rgba(0, 191, 255, 0.10), transparent 55%),
        radial-gradient(circle at 60% 95%, rgba(138, 43, 226, 0.12), transparent 60%),
        linear-gradient(180deg, #050d1f 0%, #0a192f 50%, #050d1f 100%) !important;
    background-attachment: fixed !important;
    color: #E6F1FF !important;
}

/* ===== 顶部导航 ===== */
[data-theme="dark"] .navbar {
    height: 64px !important;
    background: rgba(10, 25, 47, 0.78) !important;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid rgba(43, 124, 238, 0.18) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
    padding: 0 2rem !important;
}

[data-theme="dark"] .logo {
    width: 32px !important; height: 32px !important;
    border-radius: 8px !important;
    background: linear-gradient(135deg, #2b7cee, #00BFFF) !important;
    box-shadow: 0 4px 14px rgba(0, 191, 255, 0.35) !important;
    color: #ffffff !important;
    font-size: 1rem !important;
}

[data-theme="dark"] .brand-name {
    font-size: 1.15rem !important;
    color: #E6F1FF !important;
    font-weight: 800 !important;
}

[data-theme="dark"] .nav-link {
    padding: 0.45rem 0.95rem !important;
    border-radius: 999px !important;
    color: rgba(230, 241, 255, 0.72) !important;
    background: transparent !important;
    border: none !important;
    font-size: 0.875rem !important;
    font-weight: 600 !important;
    transition: all 0.2s ease !important;
}

[data-theme="dark"] .nav-link:hover {
    background: rgba(43, 124, 238, 0.18) !important;
    color: #E6F1FF !important;
}

[data-theme="dark"] .btn-login {
    background: linear-gradient(135deg, #2b7cee, #00BFFF) !important;
    color: #ffffff !important;
    border: none !important;
    box-shadow: 0 6px 16px rgba(43, 124, 238, 0.4) !important;
    border-radius: 999px !important;
}

[data-theme="dark"] .user-avatar {
    background: linear-gradient(135deg, #8A2BE2, #2b7cee) !important;
    border: 2px solid rgba(0, 191, 255, 0.3) !important;
    box-shadow: 0 4px 12px rgba(43, 124, 238, 0.35) !important;
}

[data-theme="dark"] .dropdown-menu {
    background: rgba(10, 25, 47, 0.95) !important;
    border: 1px solid rgba(43, 124, 238, 0.25) !important;
    backdrop-filter: blur(18px);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55) !important;
}

[data-theme="dark"] .dropdown-item {
    color: rgba(230, 241, 255, 0.85) !important;
    background: transparent !important;
}

[data-theme="dark"] .dropdown-item:hover {
    background: rgba(43, 124, 238, 0.18) !important;
    color: #00BFFF !important;
}

/* ===== 主容器 ===== */
[data-theme="dark"] .main-container {
    background: transparent !important;
}

/* ===== 页面 hero（智能体广场 / 分类详情 顶部块）===== */
[data-theme="dark"] .hero,
[data-theme="dark"] .page-hero,
[data-theme="dark"] .category-hero {
    position: relative;
    padding: 2.4rem 2rem !important;
    border-radius: 22px !important;
    background:
        radial-gradient(ellipse at 12% 10%, rgba(43, 124, 238, 0.22), transparent 55%),
        radial-gradient(ellipse at 90% 0%, rgba(0, 191, 255, 0.14), transparent 55%),
        linear-gradient(135deg, #0b1d3f 0%, #0a192f 50%, #050d1f 100%) !important;
    border: 1px solid rgba(43, 124, 238, 0.28) !important;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255,255,255,0.05) !important;
    overflow: hidden;
}

[data-theme="dark"] .category-icon-large {
    width: 64px !important; height: 64px !important;
    border-radius: 18px !important;
    background: linear-gradient(135deg, #2b7cee, #00BFFF) !important;
    box-shadow: 0 12px 28px rgba(43, 124, 238, 0.45) !important;
    color: #fff !important;
    font-size: 2rem !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
}

[data-theme="dark"] .category-title {
    background: linear-gradient(120deg, #00BFFF, #2b7cee, #DA70D6);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800 !important;
}

[data-theme="dark"] .category-subtitle {
    color: rgba(230, 241, 255, 0.7) !important;
}

/* ===== 分类 tab / 筛选器 ===== */
[data-theme="dark"] .category-tabs {
    gap: 0.5rem !important;
}

[data-theme="dark"] .category-tab,
[data-theme="dark"] .filter-btn {
    padding: 0.5rem 1.1rem !important;
    background: rgba(17, 34, 64, 0.55) !important;
    border: 1px solid rgba(59, 69, 84, 0.4) !important;
    border-radius: 999px !important;
    color: rgba(230, 241, 255, 0.75) !important;
    font-weight: 600 !important;
    transition: all 0.2s ease !important;
}

[data-theme="dark"] .category-tab:hover,
[data-theme="dark"] .filter-btn:hover {
    background: rgba(43, 124, 238, 0.18) !important;
    border-color: rgba(0, 191, 255, 0.45) !important;
    color: #E6F1FF !important;
}

[data-theme="dark"] .category-tab.active,
[data-theme="dark"] .filter-btn.active {
    background: linear-gradient(135deg, rgba(43, 124, 238, 0.4), rgba(0, 191, 255, 0.3)) !important;
    border-color: rgba(0, 191, 255, 0.6) !important;
    color: #ffffff !important;
    box-shadow: 0 6px 18px rgba(43, 124, 238, 0.3);
}

/* ===== 智能体卡片 ===== */
[data-theme="dark"] .agents-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)) !important;
    gap: 1.25rem !important;
}

[data-theme="dark"] .agent-card {
    position: relative;
    padding: 1.5rem !important;
    border-radius: 18px !important;
    background: linear-gradient(155deg, rgba(17, 34, 64, 0.78) 0%, rgba(11, 31, 68, 0.55) 100%) !important;
    border: 1px solid rgba(43, 124, 238, 0.22) !important;
    backdrop-filter: blur(14px);
    box-shadow: none !important;
    overflow: hidden;
    transition: all 0.3s ease !important;
    color: #E6F1FF !important;
}

[data-theme="dark"] .agent-card::before {
    content: "";
    position: absolute;
    top: 0; right: 0;
    width: 180px; height: 180px;
    background: radial-gradient(circle at top right, rgba(0, 191, 255, 0.5) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    filter: blur(20px);
    pointer-events: none;
}

[data-theme="dark"] .agent-card:hover {
    transform: translateY(-5px) !important;
    border-color: rgba(0, 191, 255, 0.55) !important;
    box-shadow: 0 18px 48px rgba(0, 191, 255, 0.18), 0 0 0 1px rgba(0, 191, 255, 0.25) inset !important;
}

[data-theme="dark"] .agent-card:hover::before { opacity: 0.6; }

[data-theme="dark"] .agent-avatar,
[data-theme="dark"] .agent-card-avatar,
[data-theme="dark"] .agent-icon {
    background: linear-gradient(135deg, #2b7cee, #00BFFF) !important;
    color: #fff !important;
    box-shadow: 0 8px 20px rgba(43, 124, 238, 0.35);
}

[data-theme="dark"] .agent-name,
[data-theme="dark"] .agent-card-name,
[data-theme="dark"] .agent-card-title {
    color: #E6F1FF !important;
    font-weight: 800 !important;
}

[data-theme="dark"] .agent-description,
[data-theme="dark"] .agent-card-desc,
[data-theme="dark"] .agent-card-description {
    color: rgba(136, 146, 176, 0.95) !important;
}

[data-theme="dark"] .agent-card-bar {
    background: linear-gradient(135deg, #2b7cee, #00BFFF) !important;
    box-shadow: 0 0 16px rgba(0, 191, 255, 0.5);
}

[data-theme="dark"] .agent-points,
[data-theme="dark"] .agent-card-points {
    color: #00BFFF !important;
    font-weight: 700 !important;
}

[data-theme="dark"] .agent-tag {
    background: rgba(43, 124, 238, 0.15) !important;
    color: #00BFFF !important;
    border: 1px solid rgba(43, 124, 238, 0.3) !important;
    padding: 0.25rem 0.65rem !important;
    border-radius: 999px !important;
    font-size: 0.72rem !important;
}

/* ===== 分类卡片（首页 / 分类页）===== */
[data-theme="dark"] .category-card {
    background: linear-gradient(155deg, rgba(17, 34, 64, 0.78) 0%, rgba(11, 31, 68, 0.55) 100%) !important;
    border: 1px solid rgba(43, 124, 238, 0.22) !important;
    backdrop-filter: blur(14px);
    box-shadow: none !important;
    transition: all 0.3s ease !important;
}

[data-theme="dark"] .category-card:hover {
    transform: translateY(-4px) !important;
    border-color: rgba(0, 191, 255, 0.55) !important;
    box-shadow: 0 18px 40px rgba(0, 191, 255, 0.18) !important;
}

[data-theme="dark"] .category-icon-wrap,
[data-theme="dark"] .category-icon {
    background: linear-gradient(135deg, #2b7cee, #00BFFF) !important;
    color: #fff !important;
    box-shadow: 0 8px 20px rgba(43, 124, 238, 0.35);
}

[data-theme="dark"] .category-name {
    color: #E6F1FF !important;
    font-weight: 800 !important;
}

[data-theme="dark"] .category-description {
    color: rgba(136, 146, 176, 0.95) !important;
}

[data-theme="dark"] .category-count {
    color: rgba(136, 146, 176, 0.85) !important;
    font-size: 0.78rem !important;
}

[data-theme="dark"] .card-arrow {
    color: #00BFFF !important;
    font-weight: 700 !important;
}

/* ===== 通用按钮 ===== */
[data-theme="dark"] .btn-primary,
[data-theme="dark"] button.btn-primary {
    background: linear-gradient(135deg, #2b7cee, #00BFFF) !important;
    color: #ffffff !important;
    border: none !important;
    border-radius: 999px !important;
    box-shadow: 0 8px 22px rgba(43, 124, 238, 0.4) !important;
    font-weight: 700 !important;
    transition: all 0.2s ease !important;
}

[data-theme="dark"] .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(43, 124, 238, 0.55) !important;
}

[data-theme="dark"] .btn-secondary,
[data-theme="dark"] button.btn-secondary {
    background: rgba(17, 34, 64, 0.6) !important;
    color: #E6F1FF !important;
    border: 1px solid rgba(43, 124, 238, 0.4) !important;
    border-radius: 999px !important;
}

[data-theme="dark"] .btn-secondary:hover {
    background: rgba(43, 124, 238, 0.18) !important;
    border-color: rgba(0, 191, 255, 0.6) !important;
}

/* ===== 通用输入 ===== */
[data-theme="dark"] input[type="text"],
[data-theme="dark"] input[type="search"],
[data-theme="dark"] input[type="email"],
[data-theme="dark"] input[type="password"],
[data-theme="dark"] textarea,
[data-theme="dark"] select {
    background: rgba(17, 34, 64, 0.5) !important;
    border: 1px solid rgba(59, 69, 84, 0.5) !important;
    color: #E6F1FF !important;
    border-radius: 0.65rem !important;
    transition: all 0.2s ease !important;
}

[data-theme="dark"] input:focus,
[data-theme="dark"] textarea:focus,
[data-theme="dark"] select:focus {
    outline: none !important;
    border-color: rgba(0, 191, 255, 0.7) !important;
    box-shadow: 0 0 0 3px rgba(43, 124, 238, 0.2) !important;
}

/* ===== 搜索框 ===== */
[data-theme="dark"] .search-box,
[data-theme="dark"] .search-bar {
    background: rgba(17, 34, 64, 0.5) !important;
    border: 1px solid rgba(43, 124, 238, 0.25) !important;
    border-radius: 999px !important;
    backdrop-filter: blur(10px);
}

/* ===== 聊天页 - 侧栏 ===== */
[data-theme="dark"] .sidebar,
[data-theme="dark"] .left-sidebar,
[data-theme="dark"] .chat-sidebar {
    background: rgba(10, 25, 47, 0.78) !important;
    backdrop-filter: blur(18px);
    border-right: 1px solid rgba(43, 124, 238, 0.18) !important;
}

[data-theme="dark"] .conversation-item,
[data-theme="dark"] .history-item {
    background: transparent !important;
    border: 1px solid transparent !important;
    border-radius: 0.6rem !important;
    transition: all 0.18s ease !important;
}

[data-theme="dark"] .conversation-item:hover,
[data-theme="dark"] .history-item:hover {
    background: rgba(43, 124, 238, 0.12) !important;
    border-color: rgba(43, 124, 238, 0.25) !important;
}

[data-theme="dark"] .conversation-item.active,
[data-theme="dark"] .history-item.active {
    background: linear-gradient(135deg, rgba(43, 124, 238, 0.28), rgba(0, 191, 255, 0.18)) !important;
    border-color: rgba(0, 191, 255, 0.45) !important;
    color: #E6F1FF !important;
}

/* ===== 聊天消息气泡 ===== */
[data-theme="dark"] .message-user,
[data-theme="dark"] .message.user,
[data-theme="dark"] .chat-message.user {
    background: linear-gradient(135deg, #2b7cee, #1e5bb8) !important;
    color: #ffffff !important;
    border-radius: 1rem 1rem 0.3rem 1rem !important;
    box-shadow: 0 6px 18px rgba(43, 124, 238, 0.35);
}

[data-theme="dark"] .message-ai,
[data-theme="dark"] .message.ai,
[data-theme="dark"] .message.assistant,
[data-theme="dark"] .chat-message.ai {
    background: rgba(17, 34, 64, 0.7) !important;
    color: #E6F1FF !important;
    border: 1px solid rgba(59, 69, 84, 0.5) !important;
    border-radius: 1rem 1rem 1rem 0.3rem !important;
    backdrop-filter: blur(12px);
}

[data-theme="dark"] .message-bubble,
[data-theme="dark"] .chat-bubble,
[data-theme="dark"] .msg-bubble {
    background: rgba(17, 34, 64, 0.7) !important;
    border: 1px solid rgba(59, 69, 84, 0.5) !important;
    color: #E6F1FF !important;
    border-radius: 1rem !important;
    backdrop-filter: blur(12px);
}

/* ===== 聊天输入区 ===== */
[data-theme="dark"] .chat-input,
[data-theme="dark"] .input-area,
[data-theme="dark"] .input-bar,
[data-theme="dark"] .message-input {
    background: rgba(17, 34, 64, 0.6) !important;
    border: 1px solid rgba(43, 124, 238, 0.3) !important;
    border-radius: 1rem !important;
    backdrop-filter: blur(14px);
    color: #E6F1FF !important;
}

[data-theme="dark"] .send-btn,
[data-theme="dark"] .btn-send {
    background: linear-gradient(135deg, #2b7cee, #00BFFF) !important;
    color: #ffffff !important;
    border: none !important;
    box-shadow: 0 6px 16px rgba(43, 124, 238, 0.4) !important;
    border-radius: 999px !important;
}

/* ===== 主题切换按钮 ===== */
[data-theme="dark"] .theme-toggle-btn {
    background: rgba(17, 34, 64, 0.6) !important;
    border: 1px solid rgba(43, 124, 238, 0.3) !important;
    color: #00BFFF !important;
}

[data-theme="dark"] .theme-toggle-btn:hover {
    background: rgba(43, 124, 238, 0.2) !important;
    transform: scale(1.05);
}

/* ===== 加载/空状态 ===== */
[data-theme="dark"] .loading,
[data-theme="dark"] .empty-state,
[data-theme="dark"] .no-results {
    color: rgba(136, 146, 176, 0.85) !important;
}

[data-theme="dark"] .spinner,
[data-theme="dark"] .loading-spinner {
    border-color: rgba(43, 124, 238, 0.2) !important;
    border-top-color: #00BFFF !important;
}

/* ===== 模态框 ===== */
[data-theme="dark"] .modal,
[data-theme="dark"] .modal-content {
    background: rgba(10, 25, 47, 0.95) !important;
    border: 1px solid rgba(43, 124, 238, 0.25) !important;
    backdrop-filter: blur(18px);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6) !important;
    border-radius: 18px !important;
}

[data-theme="dark"] .modal-header {
    border-bottom: 1px solid rgba(59, 69, 84, 0.4) !important;
}

[data-theme="dark"] .modal-title {
    color: #E6F1FF !important;
    font-weight: 800 !important;
}

/* ===== 滚动条（深色科技感）===== */
[data-theme="dark"] ::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

[data-theme="dark"] ::-webkit-scrollbar-track {
    background: rgba(10, 25, 47, 0.4);
}

[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: rgba(43, 124, 238, 0.4);
    border-radius: 4px;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 191, 255, 0.6);
}

/* ===== 装饰光晕（页面顶部）===== */
[data-theme="dark"] body::before {
    content: "";
    position: fixed;
    top: -200px;
    right: -150px;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 191, 255, 0.18) 0%, transparent 70%);
    filter: blur(60px);
    pointer-events: none;
    z-index: 0;
    animation: bgFloatA 12s ease-in-out infinite;
}

[data-theme="dark"] body::after {
    content: "";
    position: fixed;
    bottom: -200px;
    left: -150px;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(138, 43, 226, 0.15) 0%, transparent 70%);
    filter: blur(60px);
    pointer-events: none;
    z-index: 0;
    animation: bgFloatB 14s ease-in-out infinite;
}

@keyframes bgFloatA {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-50px, 60px); }
}

@keyframes bgFloatB {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(80px, -40px); }
}

/* 移动端适配 */
@media (max-width: 768px) {
    [data-theme="dark"] body::before,
    [data-theme="dark"] body::after { display: none; }
    [data-theme="dark"] .navbar { padding: 0 1rem !important; }
}