body { overflow: auto !important; }

        .top-navbar {
            position: sticky; top: 0; z-index: 200;
            display: flex; justify-content: space-between; align-items: center;
            padding: 0 1.5rem; height: 60px;
            background: var(--surface-high);
            border-bottom: 1px solid var(--border-ghost);
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }

        .settings-layout {
            max-width: 900px; margin: 0 auto;
            padding: 2.5rem 2rem; min-height: calc(100vh - 60px);
        }

        .page-title {
            font-size: 2rem; font-weight: 700; margin-bottom: 0.5rem;
            letter-spacing: -0.03em;
        }
        .page-subtitle { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 2.5rem; }

        .section-card {
            background: var(--surface-low);
            border: 1px solid var(--border-ghost);
            border-radius: var(--radius-md);
            margin-bottom: 1.5rem;
            overflow: hidden;
        }
        .section-header {
            padding: 1.25rem 1.75rem;
            border-bottom: 1px solid var(--border-ghost);
            background: rgba(0,0,0,0.15);
            display: flex; align-items: center; gap: 0.75rem;
        }
        .section-header h2 {
            font-size: 1rem; font-weight: 600; margin: 0;
            letter-spacing: -0.01em;
        }
        .section-icon { font-size: 1.2rem; filter: grayscale(0.4); }
        .section-body { padding: 1.75rem; }

        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.25rem;
        }
        .form-group { display: flex; flex-direction: column; gap: 0.4rem; }
        .form-group.full { grid-column: 1 / -1; }
        .form-group label {
            font-size: 0.8rem; font-weight: 600; color: var(--text-secondary);
            text-transform: uppercase; letter-spacing: 0.05em;
        }
        .form-group input, .form-group select, .form-group textarea {
            width: 100%; padding: 0.7rem 1rem;
            background: var(--surface-high); border: 1px solid var(--border-ghost);
            border-radius: var(--radius-sm); color: var(--text-primary);
            font-family: var(--font-body); font-size: 0.9rem; margin-bottom: 0;
            transition: all 0.2s;
        }
        .form-group input:focus, .form-group select:focus {
            outline: none; border-color: var(--primary-container);
            box-shadow: 0 0 0 3px rgba(0,209,255,0.1);
        }
        .form-group input:disabled {
            opacity: 0.5; cursor: not-allowed;
            background: var(--surface-lowest);
        }
        .field-hint { font-size: 0.75rem; color: var(--text-secondary); margin-top: 0.25rem; }

        .avatar-section {
            display: flex; align-items: center; gap: 2rem; margin-bottom: 1.75rem;
        }
        .avatar-preview {
            width: 80px; height: 80px; border-radius: 50%;
            border: 2px solid var(--border-ghost);
            object-fit: cover; background: var(--surface-high);
            display: flex; align-items: center; justify-content: center;
            font-size: 2rem; overflow: hidden;
        }
        .avatar-preview img { width: 100%; height: 100%; object-fit: cover; }
        .avatar-options { display: flex; gap: 0.75rem; flex-wrap: wrap; }
        .avatar-option {
            width: 48px; height: 48px; border-radius: 50%;
            border: 2px solid var(--border-ghost); cursor: pointer;
            overflow: hidden; transition: all 0.2s; object-fit: cover;
            filter: grayscale(0.3);
        }
        .avatar-option:hover, .avatar-option.selected { border-color: var(--primary-container); filter: none; transform: scale(1.1); }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-container) 100%);
            color: #fff; border: none; padding: 0.7rem 1.5rem;
            border-radius: var(--radius-sm); font-weight: 600; font-size: 0.9rem;
            cursor: pointer; transition: all 0.2s;
            box-shadow: 0 4px 12px rgba(0,209,255,0.15);
        }
        .btn-primary:hover { transform: translateY(-1px); filter: brightness(1.1); }

        .btn-ghost {
            background: transparent; color: var(--text-secondary);
            border: 1px solid var(--border-ghost); padding: 0.7rem 1.5rem;
            border-radius: var(--radius-sm); font-weight: 600; font-size: 0.9rem;
            cursor: pointer; transition: all 0.2s;
        }
        .btn-ghost:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }

        .btn-danger {
            background: transparent; color: var(--error);
            border: 1px solid rgba(255,80,80,0.3); padding: 0.7rem 1.5rem;
            border-radius: var(--radius-sm); font-weight: 600; font-size: 0.9rem;
            cursor: pointer; transition: all 0.2s;
        }
        .btn-danger:hover { background: rgba(255,80,80,0.1); border-color: var(--error); }

        .toggle-row {
            display: flex; align-items: center; justify-content: space-between;
            padding: 1rem 0; border-bottom: 1px solid var(--border-ghost);
        }
        .toggle-row:last-child { border-bottom: none; }
        .toggle-info h3 { font-size: 0.95rem; font-weight: 600; margin: 0 0 0.2rem; }
        .toggle-info p { font-size: 0.8rem; color: var(--text-secondary); margin: 0; }
        .toggle-switch {
            position: relative; width: 44px; height: 24px; cursor: pointer;
        }
        .toggle-switch input { display: none; }
        .toggle-slider {
            position: absolute; inset: 0; background: var(--surface-highest);
            border-radius: 12px; transition: 0.3s;
            border: 1px solid var(--border-ghost);
        }
        .toggle-slider::before {
            content: ''; position: absolute; width: 18px; height: 18px;
            border-radius: 50%; background: var(--text-secondary);
            left: 2px; top: 2px; transition: 0.3s;
        }
        .toggle-switch input:checked + .toggle-slider { background: rgba(0,209,255,0.2); border-color: var(--primary-container); }
        .toggle-switch input:checked + .toggle-slider::before { transform: translateX(20px); background: var(--primary-container); }

        .llm-provider-grid {
            display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
            gap: 0.75rem; margin-bottom: 1.25rem;
        }
        .llm-provider-card {
            padding: 0.85rem; border: 1px solid var(--border-ghost);
            border-radius: var(--radius-sm); cursor: pointer; transition: all 0.2s;
            text-align: center; background: var(--surface-high);
        }
        .llm-provider-card:hover { border-color: rgba(0,209,255,0.3); }
        .llm-provider-card.selected { border-color: var(--primary-container); background: rgba(0,209,255,0.08); }
        .llm-provider-card .provider-icon { font-size: 1.5rem; margin-bottom: 0.35rem; filter: grayscale(1); }
        .llm-provider-card.selected .provider-icon { filter: none; }
        .llm-provider-card .provider-name { font-size: 0.78rem; font-weight: 600; color: var(--text-secondary); }
        .llm-provider-card.selected .provider-name { color: var(--primary-container); }

        /* LLM Steps */
        .llm-step {
            background: rgba(255,255,255,0.02);
            border: 1px solid var(--border-ghost);
            border-radius: 10px;
            padding: 1rem 1.25rem;
            margin-bottom: 0.85rem;
        }
        .llm-step-header {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            margin-bottom: 0.75rem;
        }
        .llm-step-num {
            width: 26px; height: 26px;
            border-radius: 50%;
            background: rgba(124,58,237,0.25);
            color: #a78bfa;
            font-size: 0.8rem;
            font-weight: 700;
            display: flex; align-items: center; justify-content: center;
            flex-shrink: 0;
        }
        .llm-step-title {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-primary);
        }
        .llm-step-status {
            margin-top: 0.5rem;
            font-size: 0.8rem;
            min-height: 1.2rem;
            color: var(--text-secondary);
        }
        .llm-step-status.ok { color: #22c55e; }
        .llm-step-status.err { color: var(--error); }

        .upgrade-card {
            background: linear-gradient(135deg, rgba(0,209,255,0.05), rgba(191,90,242,0.05));
            border: 1px solid rgba(0,209,255,0.2);
            border-radius: var(--radius-md); padding: 1.75rem;
            display: flex; align-items: center; justify-content: space-between; gap: 2rem;
        }
        .upgrade-info h3 { font-size: 1.1rem; font-weight: 700; margin: 0 0 0.4rem; }
        .upgrade-info p { font-size: 0.85rem; color: var(--text-secondary); margin: 0; }
        .upgrade-badge {
            background: linear-gradient(135deg, #f59e0b, #ef4444);
            color: #fff; font-size: 0.7rem; font-weight: 700;
            padding: 0.2rem 0.6rem; border-radius: 20px; text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .save-row { display: flex; gap: 1rem; margin-top: 1.25rem; align-items: center; }
        .save-msg { font-size: 0.85rem; color: var(--success); display: none; }
        .save-msg.show { display: block; }

        /* Danger zone */
        .danger-zone { border-color: rgba(255,80,80,0.2) !important; }
        .danger-zone .section-header { background: rgba(255,80,80,0.05); }
        .danger-zone .section-header h2 { color: var(--error); }

        /* Modal */
        .modal-overlay {
            display: none; position: fixed; inset: 0;
            background: rgba(0,0,0,0.7); backdrop-filter: blur(8px);
            z-index: 1000; align-items: center; justify-content: center;
        }
        .modal-overlay.open { display: flex; }
        .modal-box {
            background: var(--surface-low); border: 1px solid var(--border-ghost);
            border-radius: var(--radius-md); padding: 2rem; max-width: 480px; width: 90%;
            box-shadow: 0 32px 64px rgba(0,0,0,0.5);
        }
        .modal-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 1rem; }

        /* Credit card modal */
        .cc-field { margin-bottom: 1rem; }
        .cc-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

        @media (max-width: 640px) {
            .form-grid { grid-template-columns: 1fr; }
            .upgrade-card { flex-direction: column; }
            .avatar-section { flex-direction: column; align-items: flex-start; }
        }
        .nav-avatar { width:36px; height:36px; border-radius:50%; background:linear-gradient(135deg,var(--cyan),var(--amber)); display:flex; align-items:center; justify-content:center; font-weight:700; font-size:0.9rem; cursor:pointer; box-shadow:0 0 16px rgba(0,245,212,0.3); }
    .nav-avatar:hover { filter: brightness(1.1); }
    .avatar-dropdown { position:absolute; top:50px; right:20px; background:var(--surface-high); border:1px solid var(--border-ghost); border-radius:10px; padding:6px; width:200px; box-shadow:0 8px 24px rgba(0,0,0,0.5); z-index:1000; opacity:0; visibility:hidden; transform:translateY(-8px); transition:all 0.2s; }
    .avatar-dropdown.show { opacity:1; visibility:visible; transform:translateY(0); }
    .avatar-dropdown::before { content:''; position:absolute; top:-6px; right:12px; width:12px; height:12px; background:var(--surface-high); border-left:1px solid var(--border-ghost); border-top:1px solid var(--border-ghost); transform:rotate(45deg); }
    .dd-item { display:flex; align-items:center; justify-content:flex-start; gap:10px; padding:9px 12px; border-radius:6px; cursor:pointer; color:var(--text-primary); font-size:0.85rem; transition:background 0.15s; }
    .dd-item:hover { background:rgba(255,255,255,0.06); }
    .dd-item.danger { color:var(--error); }
    .dd-item.danger:hover { background:rgba(255,115,115,0.1); }
    .dd-divider { height:1px; background:var(--border-ghost); margin:4px 8px; }