:root {
    --accent-blue: #1677ff;
    --accent-blue-hover: #4096ff;
    --accent-blue-light: #e6f4ff;
    --accent-green: #52c41a;
    --accent-green-light: #f6ffed;
    --accent-red: #ff4d4f;
    --accent-orange: #fa8c16;
    --bg-body: #f5f5f5;
    --bg-white: #ffffff;
    --bg-hover: #f5f5f5;
    --bg-card: #fafafa;
    --bg-sidebar: #ffffff;
    --bg-hero: linear-gradient(135deg, #e6f4ff 0%, #f0f5ff 100%);
    --bg-code: #f6f8fa;
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --text-link: #1677ff;
    --text-link-hover: #4096ff;
    --border-color: #e5e7eb;
    --border-color-light: #f0f0f0;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --header-height: 56px;
    --sidebar-width: 220px;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, Courier, monospace;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    background: var(--bg-body);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--text-link); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--text-link-hover); }

.top-navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-height);
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    align-items: center;
    padding: 0 20px;
    gap: 24px;
}

.top-navbar .logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    flex-shrink: 0;
}

.top-navbar .logo img {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

.top-nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
}

.top-nav-link {
    padding: 6px 14px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s;
}

.top-nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.top-nav-link.active {
    color: var(--accent-blue);
    background: var(--accent-blue-light);
}

.top-nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.top-nav-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    border: none;
    background: transparent;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
}

.top-nav-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.user-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 10px 4px 4px;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.user-dropdown-toggle:hover {
    background: var(--bg-hover);
    border-color: var(--border-color);
}

.user-avatar-nav {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: #fff;
    flex-shrink: 0;
}

.user-name-nav {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.mobile-menu-btn {
    display: none;
    width: 36px;
    height: 36px;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: var(--text-secondary);
    border: none;
    background: transparent;
    font-size: 1.1rem;
}

.main-layout {
    display: flex;
    padding-top: var(--header-height);
    min-height: 100vh;
}

.has-sidebar .main-layout {
    padding-left: var(--sidebar-width);
}

.sidebar {
    position: fixed;
    top: var(--header-height);
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    overflow-x: hidden;
    z-index: 100;
    padding: 8px;
    transition: transform 0.3s ease;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 2px; }

.sidebar-group {
    margin-bottom: 4px;
}

.sidebar-group-title {
    padding: 8px 12px 4px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    user-select: none;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.15s;
    margin-bottom: 1px;
    position: relative;
}

.sidebar-link i {
    width: 18px;
    text-align: center;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.sidebar-link:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.sidebar-link.active {
    color: var(--accent-blue);
    background: var(--accent-blue-light);
}

.sidebar-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 16px;
    background: var(--accent-blue);
    border-radius: 0 2px 2px 0;
}

.sidebar-collapsible .sidebar-group-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all 0.15s;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

.sidebar-collapsible .sidebar-group-header:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.sidebar-collapsible .sidebar-group-header i.group-icon {
    width: 18px;
    text-align: center;
    font-size: 0.9rem;
}

.sidebar-collapsible .sidebar-group-header i.chevron {
    font-size: 0.7rem;
    transition: transform 0.2s;
    color: var(--text-muted);
}

.sidebar-collapsible .sidebar-group-header.expanded i.chevron {
    transform: rotate(90deg);
}

.sidebar-collapsible .sidebar-group-body {
    display: none;
    padding-left: 8px;
}

.sidebar-collapsible .sidebar-group-body.expanded {
    display: block;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.3);
    z-index: 99;
}

.sidebar-overlay.active {
    display: block;
}

.content-area {
    flex: 1;
    padding: 24px;
    max-width: 100%;
}

.content-area-full {
    max-width: none;
}

.page-title-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.page-title-bar h1 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.page-title-bar p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s;
    font-family: var(--font-sans);
    line-height: 1.4;
    white-space: nowrap;
}

.btn-sm { padding: 5px 12px; font-size: 0.8rem; }
.btn-lg { padding: 10px 28px; font-size: 0.95rem; }

.btn-primary {
    background: var(--accent-blue);
    color: #fff;
    border-color: var(--accent-blue);
}

.btn-primary:hover {
    background: var(--accent-blue-hover);
    border-color: var(--accent-blue-hover);
    color: #fff;
}

.btn-outline {
    background: #fff;
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-outline:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background: var(--accent-blue-light);
}

.btn-success {
    background: var(--accent-green);
    color: #fff;
    border-color: var(--accent-green);
}

.btn-success:hover { background: #389e0d; border-color: #389e0d; color: #fff; }

.btn-danger {
    background: #fff;
    color: var(--accent-red);
    border-color: var(--border-color);
}

.btn-danger:hover {
    background: #fff1f0;
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.btn-warning {
    background: var(--accent-orange);
    color: #fff;
    border-color: var(--accent-orange);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}

.btn-ghost:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: var(--shadow-sm);
}

.card + .card { margin-top: 16px; }

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 8px;
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-header h3 i {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.form-group { margin-bottom: 16px; }

.form-label {
    display: block;
    margin-bottom: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 8px 12px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-sans);
    transition: all 0.2s;
    outline: none;
    line-height: 1.5;
}

.form-control:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(22,119,255,0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-control:disabled {
    background: #f5f5f5;
    cursor: not-allowed;
}

textarea.form-control { resize: vertical; min-height: 80px; }

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 32px;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

@media (max-width: 640px) {
    .form-row { grid-template-columns: 1fr; }
}

.table-container {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.data-table th {
    padding: 10px 14px;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    background: #fafafa;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
    font-size: 0.8rem;
}

.data-table td {
    padding: 10px 14px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
}

.data-table tr:last-child td { border-bottom: none; }

.data-table tbody tr:hover td {
    background: #fafafa;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    white-space: nowrap;
}

.badge-green { background: var(--accent-green-light); color: #389e0d; }
.badge-blue { background: #e6f4ff; color: var(--accent-blue); }
.badge-orange { background: #fff7e6; color: #d46b08; }
.badge-red { background: #fff1f0; color: #cf1322; }
.badge-purple { background: #f9f0ff; color: #531dab; }
.badge-gray { background: #f5f5f5; color: var(--text-muted); }

.pagination {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: 16px;
    justify-content: center;
}

.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 8px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: #fff;
    border: 1px solid var(--border-color);
    transition: all 0.15s;
}

.page-btn:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.page-btn.active {
    background: var(--accent-blue);
    color: #fff;
    border-color: var(--accent-blue);
}

.page-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.page-btn.dots {
    border: none;
    background: transparent;
    cursor: default;
}

.alert {
    padding: 10px 14px;
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
    border: 1px solid transparent;
}

.alert-success { background: var(--accent-green-light); border-color: #b7eb8f; color: #389e0d; }
.alert-danger { background: #fff1f0; border-color: #ffa39e; color: #cf1322; }
.alert-warning { background: #fff7e6; border-color: #ffd591; color: #d46b08; }
.alert-info { background: #e6f4ff; border-color: #91caff; color: var(--accent-blue); }

.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
    color: #d1d5db;
}

.empty-state p { font-size: 0.9rem; }

.code-block {
    background: var(--bg-code);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.6;
    overflow-x: auto;
    color: #24292f;
}

.code-block pre { margin: 0; white-space: pre-wrap; word-break: break-all; }

.tabs {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
    overflow-x: auto;
}

.tab-item {
    padding: 10px 16px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    font-family: var(--font-sans);
}

.tab-item:hover { color: var(--text-primary); }
.tab-item.active { color: var(--accent-blue); border-bottom-color: var(--accent-blue); }

.tab-content { display: none; }
.tab-content.active { display: block; animation: fadeIn 0.2s ease; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 14px;
    transition: box-shadow 0.2s;
}

.stat-card:hover { box-shadow: var(--shadow-sm); }

.stat-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.stat-icon.blue { background: #e6f4ff; color: var(--accent-blue); }
.stat-icon.purple { background: #f9f0ff; color: #531dab; }
.stat-icon.green { background: var(--accent-green-light); color: #389e0d; }
.stat-icon.orange { background: #fff7e6; color: #d46b08; }
.stat-icon.red { background: #fff1f0; color: #cf1322; }

.stat-info { flex: 1; min-width: 0; }
.stat-value { font-size: 1.2rem; font-weight: 700; color: var(--text-primary); line-height: 1.3; }
.stat-label { font-size: 0.8rem; color: var(--text-muted); }

.switch {
    position: relative;
    display: inline-block;
    width: 36px;
    height: 20px;
}

.switch input { opacity: 0; width: 0; height: 0; }

.switch-slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background: #d9d9d9;
    border-radius: 20px;
    transition: 0.2s;
}

.switch-slider::before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 2px;
    bottom: 2px;
    background: #fff;
    border-radius: 50%;
    transition: 0.2s;
    box-shadow: 0 1px 3px rgba(0,0,0,0.15);
}

.switch input:checked + .switch-slider { background: var(--accent-blue); }
.switch input:checked + .switch-slider::before { transform: translateX(16px); }

.setting-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    border-bottom: 1px solid var(--border-color);
    gap: 16px;
}

.setting-item:last-child { border-bottom: none; }

.setting-info { flex: 1; min-width: 0; }
.setting-info .title { font-size: 0.9rem; font-weight: 500; color: var(--text-primary); margin-bottom: 2px; }
.setting-info .desc { font-size: 0.8rem; color: var(--text-muted); }

.copy-btn {
    padding: 4px 10px;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
    background: #f5f5f5;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
    font-family: var(--font-sans);
}

.copy-btn:hover { border-color: var(--accent-blue); color: var(--accent-blue); background: var(--accent-blue-light); }
.copy-btn.copied { border-color: var(--accent-green); color: var(--accent-green); background: var(--accent-green-light); }

.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.4);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.active { display: flex; }

.modal {
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 460px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.2s ease;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.96); }
    to { opacity: 1; transform: scale(1); }
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title { font-size: 1rem; font-weight: 600; }

.modal-close {
    width: 28px; height: 28px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    border: none;
    background: transparent;
    font-size: 1.1rem;
}

.modal-close:hover { background: var(--bg-hover); color: var(--text-primary); }

.modal-body { padding: 20px; }
.modal-footer { padding: 0 20px 20px; display: flex; gap: 8px; justify-content: flex-end; }

.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background: #f5f5f5;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--bg-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    box-shadow: var(--shadow-md);
}

.auth-card .auth-logo {
    text-align: center;
    margin-bottom: 28px;
}

.auth-card .auth-logo .logo-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 12px;
    font-size: 1.5rem;
    color: #fff;
}

.auth-card .auth-logo h2 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
}

.auth-card .auth-logo p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.auth-input-wrap {
    position: relative;
}

.auth-input-wrap i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.auth-input-wrap .form-control { padding-left: 36px; }

.hero {
    background: var(--bg-hero);
    padding: 80px 24px 60px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.hero h1 {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.hero p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 28px;
    line-height: 1.7;
}

.hero-api-bar {
    display: inline-flex;
    align-items: center;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 8px 8px 8px 16px;
    gap: 12px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
    max-width: 100%;
    flex-wrap: wrap;
}

.hero-api-bar .api-text {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-primary);
}

.hero-api-bar .api-path {
    color: var(--accent-blue);
    font-weight: 500;
}

.hero-api-bar .copy-icon-btn {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    border: none;
    background: transparent;
    font-size: 0.9rem;
    transition: all 0.15s;
}

.hero-api-bar .copy-icon-btn:hover {
    background: var(--bg-hover);
    color: var(--accent-blue);
}

.hero-btns {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-btns .btn { padding: 10px 28px; font-size: 0.95rem; }

.providers-section {
    padding: 48px 24px;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-white);
}

.providers-section h3 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.providers-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 28px;
    justify-content: center;
    align-items: center;
    max-width: 800px;
    margin: 0 auto;
}

.provider-logo {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.5;
    transition: opacity 0.2s;
    font-size: 1.6rem;
}

.provider-logo:hover { opacity: 0.8; }

.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.model-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px;
    transition: all 0.2s;
    cursor: pointer;
}

.model-card:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 1px rgba(22,119,255,0.1);
}

.model-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.model-card-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: var(--accent-blue-light);
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.model-card-info h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
}

.model-card-info span {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.model-card-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.5;
    min-height: 36px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.model-card-footer {
    display: flex;
    gap: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
}

.model-card-footer .item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.model-card-footer .item .label { color: var(--text-muted); font-size: 0.7rem; }
.model-card-footer .item .value { color: var(--text-primary); font-weight: 600; font-size: 0.8rem; }

@media (max-width: 1024px) {
    .has-sidebar .main-layout {
        padding-left: 0;
    }

    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.active {
        transform: translateX(0);
    }

    .mobile-menu-btn {
        display: flex;
    }

    .top-nav-links {
        display: none;
    }

    .top-nav-links.active {
        display: flex;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--bg-white);
        border-bottom: 1px solid var(--border-color);
        padding: 8px;
        flex-direction: column;
        gap: 2px;
        z-index: 1001;
    }

    .top-nav-link {
        width: 100%;
    }
}

@media (max-width: 640px) {
    :root {
    }

    .hero { padding: 48px 16px 36px; }
    .hero h1 { font-size: 1.8rem; }
    .hero p { font-size: 0.9rem; }
    .hero-api-bar { padding: 6px 6px 6px 10px; }

    .content-area { padding: 16px; }
    .card { padding: 14px; }

    .stats-row { grid-template-columns: repeat(2, 1fr); }
    .models-grid { grid-template-columns: 1fr; }

    .form-row { grid-template-columns: 1fr; }

    .user-name-nav { display: none; }
    .top-navbar { padding: 0 12px; gap: 8px; }
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #d1d5db; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #9ca3af; }

@keyframes slideUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-slide-up { animation: slideUp 0.4s ease forwards; }

.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-primary { color: var(--text-primary); }
.text-link { color: var(--text-link); }
.text-green { color: var(--accent-green); }
.text-red { color: var(--accent-red); }
.text-orange { color: var(--accent-orange); }
.font-mono { font-family: var(--font-mono); }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: 8px; }
.mb-3 { margin-bottom: 12px; }
.mb-4 { margin-bottom: 16px; }
.mt-2 { margin-top: 8px; }
.mt-3 { margin-top: 12px; }
.mt-4 { margin-top: 16px; }

.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.flex-wrap { flex-wrap: wrap; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }

.w-full { width: 100%; }

.loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.site-footer {
    border-top: 1px solid var(--border-color);
    padding: 20px 24px;
    background: var(--bg-white);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
}