.app-layout { display: flex; min-height: 100vh; width: 100%; }

.app-sidebar {
    width: 240px; background: var(--surface-1); border-right: 1px solid var(--border);
    display: flex; flex-direction: column; position: fixed; top: 0; left: 0; bottom: 0; z-index: 100;
}
.app-sidebar-header { padding: 20px 16px; border-bottom: 1px solid var(--border); }
.app-sidebar-logo {
    display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--midground);
}
.app-sidebar-logo-icon {
    width: 32px; height: 32px; border-radius: var(--radius);
    background: linear-gradient(135deg, var(--accent), var(--midground));
    display: flex; align-items: center; justify-content: center;
    font-size: 14px; color: var(--background); font-weight: 900;
    box-shadow: 0 2px 8px rgba(255, 189, 56, 0.2);
}
.app-sidebar-logo-text {
    font-size: 0.95rem; font-weight: 800; letter-spacing: 0.02em; line-height: 1.1;
}
.app-sidebar-logo-sub {
    font-size: 0.55rem; color: var(--muted); margin-top: 1px;
    letter-spacing: 0.08em; text-transform: uppercase;
}

.app-sidebar-nav { flex: 1; padding: 8px 0; overflow-y: auto; }
.app-sidebar-section {
    font-size: 0.6rem; font-weight: 700; color: var(--muted); text-transform: uppercase;
    letter-spacing: 0.1em; padding: 16px 16px 6px; user-select: none;
}
.app-sidebar-link {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 16px; margin: 1px 8px; border-radius: var(--radius);
    font-size: 0.8rem; font-weight: 500;
    color: var(--muted-strong); text-decoration: none; transition: all 0.15s;
}
.app-sidebar-link:hover { color: var(--midground); background: var(--surface-3); }
.app-sidebar-link.active {
    color: var(--midground); background: var(--surface-3); font-weight: 600;
}
.app-sidebar-icon { font-size: 15px; width: 18px; text-align: center; }

.app-sidebar-footer { padding: 16px; border-top: 1px solid var(--border); }
.app-sidebar-balance { margin-bottom: 10px; }
.app-sidebar-balance-label {
    font-size: 0.6rem; color: var(--muted); text-transform: uppercase;
    letter-spacing: 0.08em;
}
.app-sidebar-balance-value {
    font-size: 1.2rem; font-weight: 800; font-family: var(--font-mono);
    color: var(--accent);
}
.app-sidebar-user {
    display: flex; justify-content: space-between; align-items: center;
}
.app-sidebar-user-name {
    font-size: 0.75rem; color: var(--muted-strong); font-family: var(--font-mono);
}
.app-logout-btn {
    background: none; border: 1px solid var(--border); color: var(--muted);
    padding: 4px 10px; border-radius: var(--radius); font-size: 0.65rem;
    cursor: pointer; transition: all 0.2s; font-family: var(--font-sans);
}
.app-logout-btn:hover { border-color: var(--danger); color: var(--danger); }

.app-content {
    flex: 1; margin-left: 240px; padding: 32px; min-height: 100vh;
    background: var(--background);
}

.app-mobile-toggle {
    display: none; position: fixed; bottom: 24px; right: 24px; z-index: 200;
    width: 44px; height: 44px; border-radius: var(--radius-lg);
    background: var(--accent); color: var(--background); border: none;
    font-size: 18px; cursor: pointer; font-weight: 800;
    box-shadow: var(--shadow-md);
}

.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-bottom: 24px; }
.stat-card {
    background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 22px; transition: all 0.25s; position: relative; overflow: hidden;
}
.stat-card::after {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0; transition: opacity 0.25s;
}
.stat-card:hover { border-color: var(--border-hover); transform: translateY(-1px); }
.stat-card:hover::after { opacity: 0.5; }
.stat-label {
    font-size: 0.65rem; color: var(--muted); margin-bottom: 10px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.08em;
}
.stat-value { font-size: 1.6rem; font-weight: 800; font-family: var(--font-mono); line-height: 1.1; }
.stat-value.accent { color: var(--accent); }
.stat-value.teal { color: var(--success); }
.stat-value.amber { color: var(--warning); }
.stat-value.green { color: var(--success); }
.stat-value.red { color: var(--danger); }
.stat-value.blue { color: var(--info); }

.card {
    background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 24px; margin-bottom: 20px;
}
.card-header {
    display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px;
}
.card-title {
    font-size: 0.9rem; font-weight: 700; letter-spacing: 0.02em;
}

.data-table { width: 100%; border-collapse: collapse; }
.data-table th {
    text-align: left; font-size: 0.65rem; font-weight: 600; color: var(--muted);
    padding: 10px 12px; border-bottom: 1px solid var(--border-strong);
    text-transform: uppercase; letter-spacing: 0.06em;
    background: var(--surface-1);
}
.data-table td {
    padding: 12px; font-size: 0.8rem; border-bottom: 1px solid var(--border);
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tbody tr { transition: background 0.15s; }
.data-table tbody tr:hover { background: var(--surface-3); }
.td-mono { font-family: var(--font-mono); font-size: 0.8rem; }
.td-mono-sm { font-family: var(--font-mono); font-size: 0.7rem; white-space: nowrap; }

.empty-state { text-align: center; padding: 48px 24px; color: var(--muted); font-size: 0.85rem; }

.model-svc-card {
    background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-lg);
    margin-bottom: 12px; transition: all 0.2s; overflow: hidden;
}
.model-svc-card:hover { border-color: var(--border-hover); }
.model-svc-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 20px; cursor: pointer; transition: background 0.15s;
}
.model-svc-header:hover { background: var(--surface-3); }
.model-svc-info { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.model-svc-name { font-weight: 700; font-size: 0.85rem; font-family: var(--font-mono); }
.model-svc-meta { font-size: 0.7rem; color: var(--muted-strong); font-family: var(--font-mono); }
.model-svc-actions { display: flex; align-items: center; gap: 6px; }
.model-svc-count { font-size: 0.7rem; color: var(--muted); font-family: var(--font-mono); margin-right: 4px; }
.model-svc-arrow {
    font-size: 0.7rem; color: var(--muted); transition: transform 0.2s; display: inline-block; margin-left: 4px;
}
.model-svc-body {
    border-top: 1px solid var(--border); padding: 16px 20px; background: var(--surface-1);
}
.svc-table th { font-size: 0.6rem; }
.svc-table td { padding: 8px 10px; font-size: 0.75rem; }

.test-spinner {
    display: inline-block; width: 24px; height: 24px;
    border: 3px solid var(--border); border-top-color: var(--accent);
    border-radius: 50%; animation: test-spin 0.8s linear infinite;
}
@keyframes test-spin { to { transform: rotate(360deg); } }

.welcome-banner {
    background: linear-gradient(135deg, var(--surface-2), var(--surface-3));
    border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 32px; margin-bottom: 28px; position: relative; overflow: hidden;
}
.welcome-banner::before {
    content: ''; position: absolute; top: -50%; right: -20%; width: 300px; height: 300px;
    background: radial-gradient(circle, rgba(255, 189, 56, 0.06), transparent 70%);
    pointer-events: none;
}
.welcome-title {
    font-size: 1.3rem; font-weight: 800; margin-bottom: 8px;
    letter-spacing: -0.01em;
}
.welcome-desc { font-size: 0.85rem; color: var(--muted-strong); max-width: 500px; line-height: 1.7; }

.quick-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 28px; }
.quick-action {
    background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 24px; text-align: center; cursor: pointer; transition: all 0.25s;
}
.quick-action:hover { border-color: var(--border-hover); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.quick-action-icon { font-size: 28px; margin-bottom: 10px; }
.quick-action-title {
    font-size: 0.8rem; font-weight: 700; margin-bottom: 4px;
}
.quick-action-desc { font-size: 0.7rem; color: var(--muted-strong); }

.key-card {
    background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 22px; margin-bottom: 12px; transition: all 0.2s;
}
.key-card:hover { border-color: var(--border-hover); }
.key-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.key-name { font-weight: 700; font-size: 0.85rem; }
.key-prefix {
    font-family: var(--font-mono); font-size: 0.75rem; color: var(--muted-strong);
    background: var(--surface-1); padding: 4px 10px; border-radius: var(--radius);
}
.key-meta { display: flex; gap: 16px; font-size: 0.7rem; color: var(--muted-strong); margin-bottom: 12px; font-family: var(--font-mono); }
.key-actions { display: flex; gap: 6px; }

.new-key-banner {
    background: var(--success-bg); border: 1px solid rgba(52, 211, 153, 0.2);
    border-radius: var(--radius-lg); padding: 22px; margin-bottom: 20px;
}
.new-key-banner h4 { color: var(--success); margin-bottom: 8px; font-size: 0.85rem; font-weight: 700; }
.new-key-value {
    font-family: var(--font-mono); font-size: 0.8rem; color: var(--success);
    background: var(--surface-1); padding: 14px; border-radius: var(--radius);
    word-break: break-all; margin: 8px 0; user-select: all;
    border: 1px solid rgba(52, 211, 153, 0.15);
}
.new-key-warn { font-size: 0.75rem; color: var(--warning); }

.model-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.model-card {
    background: var(--surface-2); border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 22px; transition: all 0.25s; cursor: default;
}
.model-card:hover { border-color: var(--border-hover); }
.model-card-name { font-weight: 700; font-size: 0.85rem; font-family: var(--font-mono); margin-bottom: 8px; }
.model-card-pricing {
    display: flex; gap: 16px; padding-top: 12px; border-top: 1px solid var(--border);
    margin-top: 12px;
}
.model-price-item { display: flex; flex-direction: column; gap: 2px; }
.model-price-label { font-size: 0.6rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.model-price-val { font-size: 0.8rem; font-weight: 700; color: var(--success); font-family: var(--font-mono); }

.doc-section { margin-bottom: 36px; }
.doc-section h3 {
    font-size: 0.9rem; font-weight: 700; margin-bottom: 14px;
}
.doc-code {
    background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 22px; font-family: var(--font-mono); font-size: 0.8rem;
    color: var(--success); overflow-x: auto; line-height: 1.9;
}
.doc-code .comment { color: var(--muted); }
.doc-code .string { color: var(--warning); }
.doc-code .keyword { color: var(--accent); }

.topup-amount-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-bottom: 14px; }
.topup-amount-btn {
    padding: 12px 0; border: 1px solid var(--border); border-radius: var(--radius);
    background: var(--surface-2); color: var(--midground); cursor: pointer;
    font-size: 0.85rem; font-weight: 700; transition: all 0.2s; font-family: var(--font-mono);
}
.topup-amount-btn:hover { border-color: var(--border-hover); background: var(--surface-3); }
.topup-amount-btn.active { border-color: var(--accent); background: var(--accent); color: var(--background); }

.auth-card {
    width: 100%; max-width: 380px;
    background: var(--surface-1); border: 1px solid var(--border);
    border-radius: var(--radius-lg); padding: 36px;
    box-shadow: var(--shadow-lg);
}
.auth-logo { text-align: center; margin-bottom: 28px; }
.auth-logo-icon {
    width: 48px; height: 48px; border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--accent), var(--midground));
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 22px; color: var(--background); font-weight: 900;
    box-shadow: 0 4px 16px rgba(255, 189, 56, 0.25);
    margin-bottom: 16px;
}
.auth-logo-title {
    font-size: 1.4rem; font-weight: 800; letter-spacing: 0.02em;
}
.auth-logo-sub {
    margin-top: 6px; font-size: 0.7rem; color: var(--muted);
    letter-spacing: 0.08em; text-transform: uppercase;
}
.auth-tab-bar {
    display: flex; gap: 0; margin-bottom: 22px;
    background: var(--surface-2); border-radius: var(--radius); padding: 3px;
}
.auth-tab {
    flex: 1; padding: 7px; font-size: 0.75rem; font-weight: 600;
    cursor: pointer; border: none; border-radius: 4px;
    background: transparent; color: var(--muted);
    transition: all 0.2s; font-family: var(--font-sans);
    letter-spacing: 0.04em; text-align: center;
}
.auth-tab.active { background: var(--midground); color: var(--background); }
.auth-tab:hover:not(.active) { color: var(--midground); }
.auth-features {
    margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--border);
    display: flex; flex-direction: column; gap: 8px;
}
.auth-feature {
    font-size: 0.7rem; color: var(--muted-strong); display: flex; align-items: center; gap: 8px;
}
.auth-feature-dot {
    width: 4px; height: 4px; border-radius: 50%; background: var(--accent); flex-shrink: 0;
}
.auth-default-creds {
    margin-top: 16px; padding: 12px; background: var(--surface-2);
    border: 1px solid var(--border); border-radius: var(--radius);
    font-family: var(--font-mono); font-size: 0.7rem; color: var(--muted-strong);
    line-height: 1.8;
}
.auth-default-creds strong { color: var(--accent); font-weight: 600; }

@media (max-width: 1024px) {
    .stat-grid { grid-template-columns: repeat(2, 1fr); }
    .model-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .app-sidebar { transform: translateX(-100%); transition: transform 0.2s; }
    .app-sidebar.open { transform: translateX(0); }
    .app-content { margin-left: 0; padding: 16px; }
    .app-mobile-toggle { display: flex; align-items: center; justify-content: center; }
    .stat-grid { grid-template-columns: 1fr; }
    .model-grid { grid-template-columns: 1fr; }
    .quick-actions { grid-template-columns: 1fr; }
}