:root {
    --bg-primary: #0a0e17;
    --bg-secondary: rgba(255,255,255,0.02);
    --text-primary: #e8edf5;
    --text-secondary: #8899bb;
    --text-muted: #556688;
    --border-color: rgba(255,255,255,0.06);
    --border-hover: rgba(255,255,255,0.12);
    --accent: #4a8af4;
    --accent-hover: #3a7ae4;
    --card-bg: rgba(255,255,255,0.03);
    --radius: 6px;
    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
    --bg-primary: #f0f4f8;
    --bg-secondary: rgba(255,255,255,0.5);
    --text-primary: #1a2e4a;
    --text-secondary: #4a6a8a;
    --text-muted: #8a9bb0;
    --border-color: rgba(0,0,0,0.08);
    --border-hover: rgba(0,0,0,0.15);
    --card-bg: rgba(255,255,255,0.5);
}

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

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

.app {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    overflow: hidden;
}

/* ===== 头部 ===== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0 24px;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 12px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}
.logo i { font-size: 28px; color: var(--accent); }

.header-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
}
.header-actions a, .header-actions button {
    padding: 8px 16px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    height: 40px;
}
.header-actions a:hover, .header-actions button:hover {
    background: rgba(74, 138, 244, 0.08);
    border-color: rgba(74, 138, 244, 0.3);
    color: var(--text-primary);
}

/* 主题切换按钮和反馈按钮统一大小 */
.theme-toggle,
.header-actions .feedback-btn {
    height: 40px !important;
    padding: 0 14px !important;
    font-size: 13px !important;
    display: flex !important;
    align-items: center !important;
    gap: 6px !important;
    border-radius: var(--radius) !important;
    border: 1px solid var(--border-color) !important;
    background: var(--bg-secondary) !important;
    color: var(--text-secondary) !important;
    cursor: pointer !important;
    transition: all var(--transition) !important;
}
.theme-toggle:hover,
.header-actions .feedback-btn:hover {
    background: rgba(74, 138, 244, 0.08) !important;
    border-color: rgba(74, 138, 244, 0.3) !important;
    color: var(--text-primary) !important;
}

/* ===== 搜索栏 ===== */
.search-section {
    padding: 24px 0 20px;
}
.search-bar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}
.search-bar input[type="text"] {
    flex: 1;
    padding: 14px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
    transition: all var(--transition);
    min-width: 200px;
}
.search-bar input[type="text"]:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(74, 138, 244, 0.08);
}
.search-bar input[type="text"]::placeholder {
    color: var(--text-muted);
}
.search-options {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.search-options select {
    padding: 14px 18px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    cursor: pointer;
    transition: all var(--transition);
}
.search-options select:focus {
    border-color: var(--accent);
}
.search-options button {
    padding: 14px 32px;
    border: none;
    border-radius: var(--radius);
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}
.search-options button:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(74, 138, 244, 0.3);
}
.search-options button:active { transform: translateY(0); }

/* ===== 站点选择器 ===== */
.site-selector {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin: 12px 0 20px;
}
.site-selector-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-size: 14px;
    color: var(--text-secondary);
}
.select-all-btn {
    padding: 4px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 12px;
    transition: all var(--transition);
}
.select-all-btn:hover {
    background: rgba(74, 138, 244, 0.08);
    border-color: var(--accent);
}
.site-checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 8px;
}
.site-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition);
    font-size: 13px;
}
.site-checkbox:hover {
    background: rgba(74, 138, 244, 0.04);
    border-color: var(--border-hover);
}
.site-checkbox input[type="checkbox"] {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
    cursor: pointer;
}
.site-checkbox input[type="checkbox"]:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ===== 站点卡片 ===== */
.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
    margin: 16px 0 24px;
}
.site-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all var(--transition);
}
.site-card:hover {
    border-color: var(--border-hover);
    background: rgba(74, 138, 244, 0.02);
}
.site-card .icon {
    font-size: 20px;
    color: var(--accent);
    width: 32px;
    text-align: center;
    flex-shrink: 0;
}
.site-card .info {
    flex: 1;
    min-width: 0;
}
.site-card .name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.site-card .status {
    font-size: 10px;
    padding: 2px 10px;
    border-radius: 3px;
    font-weight: 500;
    flex-shrink: 0;
}
.site-card .status.ready {
    color: var(--accent);
    background: rgba(74, 138, 244, 0.08);
    border: 1px solid rgba(74, 138, 244, 0.12);
}
.site-card .status.loading {
    color: #f0b34b;
    background: rgba(240, 179, 75, 0.08);
    border: 1px solid rgba(240, 179, 75, 0.15);
    animation: pulse 1.2s ease-in-out infinite;
}
.site-card .status.done {
    color: #4cda8a;
    background: rgba(76, 218, 138, 0.08);
    border: 1px solid rgba(76, 218, 138, 0.15);
}
.site-card .status.error {
    color: #f06a6a;
    background: rgba(240, 106, 106, 0.08);
    border: 1px solid rgba(240, 106, 106, 0.15);
}
.site-card .status.slow {
    color: #f0b34b;
    background: rgba(240, 179, 75, 0.08);
    border: 1px solid rgba(240, 179, 75, 0.15);
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

/* ===== 搜索结果 ===== */
.results-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 16px;
    margin-top: 20px;
}
.result-frame-wrapper {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 400px;
}
.frame-header {
    padding: 10px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}
.frame-header .site-name {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}
.frame-header .site-name i { color: var(--accent); }
.frame-header .open-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 12px;
    padding: 4px 12px;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    transition: all var(--transition);
}
.frame-header .open-link:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}
.frame-content {
    flex: 1;
    position: relative;
    min-height: 350px;
}
.frame-content iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: var(--bg-primary);
    min-height: 350px;
}
.frame-content .frame-error {
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
    color: var(--text-secondary);
    gap: 12px;
}
.frame-content .frame-error i {
    font-size: 40px;
    color: #f06a6a;
}

/* ===== 模态框 ===== */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(8px);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    padding: 20px;
}
.modal-content {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    padding: 24px;
    position: relative;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}
.modal-header h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}
.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0 8px;
    transition: all var(--transition);
}
.modal-close:hover {
    color: var(--text-primary);
    transform: rotate(90deg);
}
.modal-content .form-group {
    margin-bottom: 16px;
}
.modal-content .form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}
.modal-content .form-group select,
.modal-content .form-group input[type="text"] {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: all var(--transition);
}
.modal-content .form-group select:focus,
.modal-content .form-group input[type="text"]:focus {
    border-color: var(--accent);
}
.modal-content .form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: all var(--transition);
    min-height: 120px;
    resize: vertical;
    font-family: inherit;
}
.modal-content .form-group textarea:focus {
    border-color: var(--accent);
}
.modal-content .char-count {
    text-align: right;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}
.file-upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 30px 20px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    color: var(--text-secondary);
}
.file-upload-area:hover {
    border-color: var(--accent);
    background: rgba(74,138,244,0.02);
}
.file-upload-area i {
    font-size: 36px;
    display: block;
    margin-bottom: 8px;
}
.file-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 8px;
    margin-top: 8px;
}
.preview-item {
    position: relative;
    aspect-ratio: 1;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg-secondary);
}
.preview-item img,
.preview-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.preview-item .remove-file {
    position: absolute;
    top: 2px;
    right: 2px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 22px;
    height: 22px;
    cursor: pointer;
    font-size: 16px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}
.preview-item .remove-file:hover {
    background: #f06a6a;
}
.preview-item .file-type-badge {
    position: absolute;
    bottom: 4px;
    left: 4px;
    background: rgba(0,0,0,0.7);
    color: #fff;
    padding: 1px 8px;
    border-radius: 3px;
    font-size: 9px;
}
.submit-feedback {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: var(--radius);
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.submit-feedback:hover {
    background: var(--accent-hover);
}
.submit-feedback:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== 空状态 ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}
.empty-state i {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.3;
}
.empty-state h3 {
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

/* ===== 管理页面 ===== */
.form-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px 24px;
    margin: 20px 0 28px;
}
.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}
.form-row input[type="text"] {
    flex: 1 0 140px;
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: all var(--transition);
    min-width: 100px;
}
.form-row input[type="text"]:focus {
    border-color: var(--accent);
}
.form-row input[type="text"]::placeholder {
    color: var(--text-muted);
}
.toggle-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0 8px;
}
.toggle-label input[type="checkbox"] {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
    cursor: pointer;
}
.form-row button {
    padding: 10px 28px;
    border: none;
    border-radius: var(--radius);
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
}
.form-row button:hover {
    background: var(--accent-hover);
    box-shadow: 0 4px 16px rgba(74, 138, 244, 0.25);
}

.list-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
}
.list-header {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 500;
    background: var(--bg-primary);
}
.list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 8px;
    transition: all var(--transition);
}
.list-item:last-child { border-bottom: none; }
.list-item:hover {
    background: rgba(74, 138, 244, 0.02);
}
.list-item .info {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 14px;
    min-width: 0;
    flex: 1;
}
.list-item .info i {
    font-size: 18px;
    color: var(--accent);
    width: 24px;
    flex-shrink: 0;
}
.list-item .info .name {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
}
.list-item .info .url {
    font-size: 12px;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 300px;
}
.list-item .actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
    flex-wrap: wrap;
}
.list-item .actions button, .list-item .actions form button {
    padding: 5px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: 4px;
}
.list-item .actions button:hover {
    background: rgba(74, 138, 244, 0.06);
    color: var(--text-primary);
}
.list-item .actions .del:hover {
    color: #f06a6a;
    border-color: rgba(240,106,106,0.2);
    background: rgba(240,106,106,0.06);
}
.list-item .actions .edit-btn:hover {
    color: var(--accent);
    border-color: rgba(74,138,244,0.2);
    background: rgba(74,138,244,0.06);
}
.list-item .actions .toggle-btn {
    min-width: 50px;
    justify-content: center;
}

.msg {
    padding: 12px 18px;
    border-radius: var(--radius);
    margin: 16px 0;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    font-size: 14px;
    color: var(--text-secondary);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    body { padding: 12px; }
    .search-bar input[type="text"] { flex: 1 1 100%; }
    .search-options { flex: 1 1 100%; }
    .search-options select { flex: 1; }
    .search-options button { flex: 1; justify-content: center; }
    .sites-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
    .results-container { grid-template-columns: 1fr; }
    .result-frame-wrapper { min-height: 300px; }
    .frame-content { min-height: 250px; }
    .frame-content iframe { min-height: 250px; height: 300px; }
    .logo { font-size: 18px; }
    .logo i { font-size: 22px; }
    .form-row input[type="text"] { flex: 1 0 100%; }
    .form-row button { flex: 1 0 100%; justify-content: center; }
    .list-item .info .url { max-width: 120px; }
    .list-item { padding: 10px 14px; }
    .list-header { padding: 10px 14px; font-size: 12px; }
    .site-checkbox-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
    .modal-content { padding: 16px; margin: 10px; }
}
@media (max-width: 480px) {
    body { padding: 8px; }
    .sites-grid { grid-template-columns: 1fr 1fr; }
    .site-card { padding: 10px 12px; }
    .site-card .name { font-size: 12px; }
    .header-actions a, .header-actions button,
    .theme-toggle, .header-actions .feedback-btn {
        padding: 6px 12px !important;
        font-size: 12px !important;
        height: 34px !important;
    }
    .list-item .info .url { max-width: 80px; }
    .list-item .actions button { padding: 4px 10px; font-size: 11px; }
    .result-frame-wrapper iframe { height: 250px; }
}