/* ═══ Chat App ═══ */
        #chat-app { display: none; height: 100vh; }
        .chat-layout { display: flex; height: 100%; }

        /* Sidebar */
        .sidebar {
            width: 260px; background: var(--bg-secondary);
            border-right: 1px solid var(--border);
            display: flex; flex-direction: column; flex-shrink: 0;
        }
        .sidebar-header { padding: 1rem; border-bottom: 1px solid var(--border); }
        .btn-new-chat {
            width: 100%; padding: 0.6rem; border-radius: 8px;
            background: var(--bg-card); border: 1px solid var(--border);
            color: var(--text-primary); font-size: 0.8rem; font-weight: 600;
            cursor: pointer; font-family: inherit; transition: var(--transition);
            display: flex; align-items: center; gap: 8px; justify-content: center;
        }
        .btn-new-chat:hover { border-color: var(--fox); }
        .sidebar-chats { flex: 1; overflow-y: auto; padding: 0.5rem; }
        .chat-group-label { font-size: 0.65rem; font-weight: 700; color: var(--text-muted); padding: 8px 8px 4px; text-transform: uppercase; letter-spacing: 0.05em; }
        .chat-item {
            padding: 8px 12px; border-radius: 8px; font-size: 0.8rem;
            color: var(--text-secondary); cursor: pointer; transition: var(--transition);
            overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
        }
        .chat-item:hover { background: var(--bg-card-hover); color: var(--text-primary); }
        .chat-item.active { background: var(--bg-card-hover); color: var(--text-primary); }
        .sidebar-footer {
            padding: 0.75rem 1rem; border-top: 1px solid var(--border);
            display: flex; align-items: center; gap: 10px;
        }
        .user-avatar {
            width: 32px; height: 32px; border-radius: 50%;
            background: linear-gradient(135deg, var(--fox), var(--gold));
            display: flex; align-items: center; justify-content: center;
            font-size: 0.7rem; font-weight: 800; color: #1a0e00; flex-shrink: 0;
        }
        .user-avatar img { width: 100%; height: 100%; border-radius: 50%; object-fit: cover; }
        .user-info { flex: 1; min-width: 0; }
        .user-name { font-size: 0.78rem; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
        .user-tier { font-size: 0.65rem; color: var(--text-muted); }
        .btn-signout {
            background: none; border: none; color: var(--text-muted);
            cursor: pointer; font-size: 0.75rem; padding: 4px;
        }
        .btn-signout:hover { color: var(--rose); }

        /* Right Sidebar */
        .sidebar-right {
            width: 240px; background: var(--bg-secondary);
            border-left: 1px solid var(--border);
            display: flex; flex-direction: column; flex-shrink: 0;
            padding: 1rem 0;
        }
        @media (max-width: 1024px) {
            .sidebar-right { display: none; }
        }

        /* Chat main */
        .chat-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
        .chat-header {
            padding: 0.75rem 1.5rem; border-bottom: 1px solid var(--border);
            display: flex; align-items: center; justify-content: space-between;
            background: rgba(7,6,15,0.9); backdrop-filter: blur(12px);
        }
        .chat-header-left { display: flex; align-items: center; gap: 12px; }
        .chat-header h2 { font-size: 0.9rem; font-weight: 700; }
        .model-select {
            background: var(--bg-card); border: 1px solid var(--border);
            color: var(--text-secondary); padding: 4px 10px; border-radius: 6px;
            font-size: 0.72rem; font-family: inherit; cursor: pointer;
        }
        .backend-status {
            font-size: 0.7rem; display: flex; align-items: center; gap: 6px;
            color: var(--text-muted);
        }
        .status-dot { width: 6px; height: 6px; border-radius: 50%; }
        .dot-green { background: var(--emerald); }
        .dot-red { background: var(--rose); }

        /* Messages */
        .chat-messages { flex: 1; overflow-y: auto; padding: 1.5rem; }
        .message { max-width: 720px; margin: 0 auto 1.25rem; display: flex; gap: 12px; animation: fadeIn 0.3s ease; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
        .msg-avatar {
            width: 32px; height: 32px; border-radius: 10px; flex-shrink: 0;
            display: flex; align-items: center; justify-content: center; font-size: 0.85rem;
        }
        .msg-bot .msg-avatar { background: linear-gradient(135deg, var(--fox), var(--gold)); }
        .msg-user .msg-avatar { background: var(--bg-card); border: 1px solid var(--border); }
        .msg-content { flex: 1; min-width: 0; }
        .msg-name { font-size: 0.75rem; font-weight: 700; margin-bottom: 4px; }
        .msg-text { font-size: 0.88rem; line-height: 1.65; color: var(--text-primary); }
        .msg-text p { margin-bottom: 0.75em; }
        .msg-text p:last-child { margin-bottom: 0; }
        .msg-text code { background: rgba(255,255,255,0.08); padding: 2px 6px; border-radius: 4px; font-size: 0.82rem; }
        .msg-text pre { background: rgba(0,0,0,0.4); border: 1px solid var(--border); border-radius: 8px; padding: 1rem; overflow-x: auto; margin: 0.75em 0; }
        .msg-text pre code { background: none; padding: 0; font-size: 0.8rem; }
        .msg-meta { font-size: 0.65rem; color: var(--text-muted); margin-top: 6px; display: flex; gap: 12px; }

        /* Typing */
        .typing-indicator { display: flex; gap: 4px; padding: 8px 0; }
        .typing-indicator span {
            width: 6px; height: 6px; border-radius: 50%; background: var(--text-muted);
            animation: bounce 1.2s infinite;
        }
        .typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
        .typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
        @keyframes bounce { 0%, 60%, 100% { transform: translateY(0); } 30% { transform: translateY(-6px); } }

        /* Input */
        .chat-input-area { padding: 1rem 1.5rem; border-top: 1px solid var(--border); background: var(--bg-secondary); }
        .chat-disclaimer {
            max-width: 720px; margin: 8px auto 0; font-size: 0.65rem;
            color: var(--text-muted); text-align: center;
        }

        /* Welcome */
        .welcome {
            max-width: 520px; margin: 0 auto; text-align: center;
            padding-top: 15vh;
        }
        .welcome h2 { font-size: 1.5rem; font-weight: 800; margin-bottom: 0.5rem; }
        .welcome h2 .gradient {
            background: linear-gradient(135deg, var(--fox), var(--gold));
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        }
        .welcome p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 2rem; }
        .suggestions { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
        .suggestion {
            background: var(--bg-card); border: 1px solid var(--border);
            border-radius: 10px; padding: 0.6rem 1rem; font-size: 0.78rem;
            color: var(--text-secondary); cursor: pointer; transition: var(--transition);
        }
        .suggestion:hover { border-color: var(--fox); color: var(--text-primary); }

        /* Mobile */
        .btn-menu { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.2rem; cursor: pointer; }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .btn-menu { display: block; }
            .sidebar { position: fixed; left: -260px; z-index: 200; height: 100%; transition: var(--transition); }
            .sidebar.open { left: 0; }
            .hero h1 { font-size: 2.2rem; }
            .features-grid { grid-template-columns: 1fr; }
            .pricing-grid { grid-template-columns: 1fr; }
            .pipeline-grid { grid-template-columns: 1fr !important; }
        }

        /* Sidebar Sections */
        .sidebar-section { padding: 0.5rem 0.75rem; }
        .sidebar-section-title {
            font-size: 0.65rem; font-weight: 700; color: var(--text-muted);
            text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 6px; padding: 0 4px;
        }
        .sidebar-project {
            display: flex; align-items: center; gap: 8px;
            padding: 7px 10px; border-radius: 8px; font-size: 0.78rem;
            color: var(--text-secondary); cursor: pointer; transition: var(--transition);
        }
        .sidebar-project:hover { background: var(--bg-card-hover); color: var(--text-primary); }
        .sidebar-project.active { background: var(--bg-card-hover); color: var(--text-primary); border-left: 2px solid var(--fox); }
        .project-icon { font-size: 0.85rem; }
        .sidebar-agent {
            display: flex; align-items: center; gap: 8px;
            padding: 6px 10px; border-radius: 6px; font-size: 0.75rem;
            color: var(--text-secondary);
        }
        .agent-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
        .agent-badge {
            margin-left: auto; font-size: 0.58rem; text-transform: uppercase;
            border: 1px solid var(--emerald); color: var(--emerald); padding: 1px 6px;
            border-radius: 4px; letter-spacing: 0.04em; font-weight: 600;
        }

        /* Pipeline Cards */
        .pipeline-grid {
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px;
            max-width: 480px; margin: 0 auto;
        }
        .pipeline-card {
            background: var(--bg-card); border: 1px solid var(--border);
            border-radius: 14px; padding: 1.2rem; cursor: pointer;
            transition: all 0.3s ease; text-align: left;
        }
        .pipeline-card:hover {
            border-color: var(--fox); transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(255,140,50,0.15);
        }
        .pipeline-icon { font-size: 1.6rem; margin-bottom: 8px; }
        .pipeline-title { font-size: 0.85rem; font-weight: 700; margin-bottom: 4px; }
        .pipeline-desc { font-size: 0.7rem; color: var(--text-muted); line-height: 1.3; }

        /* Model selector at bottom */
        .model-pill { flex-shrink: 0; display: flex; align-items: center; }
        .model-pill .model-select {
            background: transparent; border: none;
            color: var(--text-muted); padding: 8px 4px 8px 12px;
            font-size: 0.8rem; font-family: inherit; cursor: pointer;
            transition: var(--transition); appearance: none;
            font-weight: 600;
        }
        .model-pill .model-select:hover { color: var(--text-primary); }
        .model-pill .model-select:focus { outline: none; color: var(--text-primary); }
        .model-pill .model-select optgroup {
            background: var(--bg-secondary); color: var(--text-muted); font-weight: 700;
        }
        .model-pill .model-select option {
            background: var(--bg-secondary); color: var(--text-primary); font-weight: 500; padding: 4px;
        }
        .chat-input-row {
            display: flex; align-items: center; gap: 8px;
            background: rgba(255,255,255,0.03); border: 1px solid var(--border);
            padding: 4px 8px; border-radius: 20px; transition: var(--transition);
        }
        .chat-input-row:focus-within {
            border-color: rgba(255,255,255,0.2); background: rgba(255,255,255,0.05);
            box-shadow: 0 4px 20px rgba(0,0,0,0.2);
        }
        .chat-input {
            flex: 1; background: transparent; border: none; color: var(--text-primary);
            padding: 10px 4px; font-family: inherit; font-size: 0.95rem;
            resize: none; max-height: 120px; overflow-y: auto; line-height: 1.4;
        }
        .chat-input:focus { outline: none; }
        .chat-input::placeholder { color: var(--text-muted); }
        .btn-send {
            background: var(--text-primary); color: var(--bg-primary);
            border: none; width: 34px; height: 34px; border-radius: 50%;
            display: flex; align-items: center; justify-content: center;
            cursor: pointer; transition: var(--transition); flex-shrink: 0;
            margin-right: 4px;
        }
        .btn-send:hover { transform: scale(1.05); background: white; }
        .btn-send:disabled { opacity: 0.3; cursor: not-allowed; transform: none; }

        /* ═══ Smooth Auth Transitions ═══ */
        #landing, #chat-app { transition: opacity 0.5s ease, transform 0.5s ease; }
        #landing.fade-out { opacity: 0; transform: translateY(-20px); pointer-events: none; }
        #chat-app.fade-in { opacity: 1; transform: translateY(0); }
        #chat-app { opacity: 0; transform: translateY(20px); }

        /* Welcome banner on landing after login */
        .auth-welcome-banner {
            position: fixed; top: 0; left: 0; right: 0;
            background: linear-gradient(135deg, rgba(255,140,50,0.15), rgba(255,200,50,0.08));
            backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,140,50,0.2);
            padding: 12px 24px; display: flex; align-items: center; justify-content: space-between;
            z-index: 300; animation: slideDown 0.4s ease;
        }
        @keyframes slideDown { from { transform: translateY(-100%); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
        .auth-welcome-banner .welcome-left { display: flex; align-items: center; gap: 12px; }
        .auth-welcome-banner .welcome-avatar {
            width: 36px; height: 36px; border-radius: 50%; overflow: hidden;
            border: 2px solid var(--fox); display: flex; align-items: center; justify-content: center;
            background: var(--surface); font-weight: 700; color: var(--fox);
        }
        .auth-welcome-banner .welcome-avatar img { width: 100%; height: 100%; object-fit: cover; }
        .auth-welcome-banner .welcome-text { font-size: 0.9rem; color: var(--text-primary); }
        .auth-welcome-banner .welcome-text strong { color: var(--fox); }
        .auth-welcome-banner .welcome-actions { display: flex; gap: 8px; align-items: center; }
        .btn-go-full {
            background: linear-gradient(135deg, var(--fox), var(--gold)); color: #1a0e00;
            border: none; padding: 8px 20px; border-radius: 8px; font-weight: 700;
            font-size: 0.82rem; cursor: pointer; font-family: inherit;
            transition: all 0.3s; box-shadow: 0 2px 12px rgba(255,140,50,0.3);
        }
        .btn-go-full:hover { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(255,140,50,0.5); }

        /* ═══════════════════════════════════════
           Page Config Panel
           ═══════════════════════════════════════ */
        .page-config-panel {
            max-width: 760px;
            margin: 0 auto;
            padding: 2rem 0;
            animation: fadeIn 0.35s ease;
        }

        /* Tabs */
        .config-tabs {
            display: flex;
            gap: 4px;
            margin-bottom: 1.5rem;
            background: rgba(255,255,255,0.02);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 4px;
        }
        .config-tab {
            flex: 1;
            padding: 10px 16px;
            background: transparent;
            border: none;
            border-radius: 10px;
            color: var(--text-muted);
            font-size: 0.82rem;
            font-weight: 600;
            font-family: inherit;
            cursor: pointer;
            transition: all 0.25s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }
        .config-tab:hover {
            color: var(--text-secondary);
            background: rgba(255,255,255,0.03);
        }
        .config-tab.active {
            background: rgba(249,115,22,0.12);
            color: var(--fox);
            box-shadow: 0 2px 12px rgba(249,115,22,0.1);
        }
        .config-tab-icon {
            font-size: 0.9rem;
        }

        /* Tab Content */
        .config-tab-content {
            min-height: 300px;
        }
        .config-loading {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 12px;
            padding: 4rem 0;
        }
        .config-section {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
            animation: fadeIn 0.3s ease;
        }

        /* Glassmorphism Cards */
        .config-card {
            background: rgba(255,255,255,0.025);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 1.25rem 1.5rem;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            transition: border-color 0.3s ease;
        }
        .config-card:hover {
            border-color: var(--border-hover);
        }
        .config-card-header {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
            padding-bottom: 0.75rem;
            border-bottom: 1px solid rgba(255,255,255,0.04);
        }
        .config-card-icon {
            font-size: 1rem;
        }

        /* Fields */
        .config-field {
            margin-bottom: 1rem;
        }
        .config-field:last-child {
            margin-bottom: 0;
        }
        .config-label {
            display: block;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 6px;
        }
        .config-input,
        .config-select,
        .config-textarea {
            width: 100%;
            background: rgba(0,0,0,0.25);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 10px 14px;
            color: var(--text-primary);
            font-size: 0.88rem;
            font-family: inherit;
            transition: all 0.25s ease;
            outline: none;
        }
        .config-input:focus,
        .config-select:focus,
        .config-textarea:focus {
            border-color: var(--fox);
            box-shadow: 0 0 0 3px rgba(249,115,22,0.1);
            background: rgba(0,0,0,0.35);
        }
        .config-input::placeholder,
        .config-textarea::placeholder {
            color: var(--text-muted);
            opacity: 0.6;
        }
        .config-input-sm {
            max-width: 100px;
            text-align: center;
            font-size: 1.4rem;
        }
        .config-textarea {
            resize: vertical;
            min-height: 100px;
            line-height: 1.5;
            font-size: 0.84rem;
        }
        .config-select {
            cursor: pointer;
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            padding-right: 32px;
        }
        .config-select option {
            background: var(--bg-secondary);
            color: var(--text-primary);
        }
        .config-field-row {
            display: flex;
            gap: 1rem;
            margin-bottom: 1rem;
        }
        .config-field-row:last-child {
            margin-bottom: 0;
        }
        .config-hint {
            display: block;
            font-size: 0.7rem;
            color: var(--text-muted);
            margin-top: 6px;
            font-style: italic;
        }

        /* Actions */
        .config-actions {
            display: flex;
            gap: 12px;
            align-items: center;
            padding-top: 0.5rem;
        }
        .config-btn-save {
            background: linear-gradient(135deg, var(--fox), var(--gold));
            color: #1a0e00;
            border: none;
            padding: 12px 28px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 0.88rem;
            cursor: pointer;
            font-family: inherit;
            transition: all 0.3s ease;
            box-shadow: 0 4px 18px rgba(249,115,22,0.25);
        }
        .config-btn-save:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 24px rgba(249,115,22,0.35);
        }
        .config-btn-save:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none;
        }
        .config-btn-secondary {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            padding: 11px 20px;
            border-radius: 12px;
            font-size: 0.82rem;
            font-weight: 600;
            cursor: pointer;
            font-family: inherit;
            transition: all 0.25s ease;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .config-btn-secondary:hover {
            border-color: var(--fox);
            color: var(--text-primary);
        }

        /* Stats Row */
        .config-stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 12px;
        }
        .config-stat-card {
            background: rgba(255,255,255,0.025);
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 1rem;
            text-align: center;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            transition: border-color 0.3s ease;
        }
        .config-stat-card:hover {
            border-color: var(--border-hover);
        }
        .config-stat-value {
            font-size: 1.3rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--fox), var(--gold));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 4px;
        }
        .config-stat-label {
            font-size: 0.68rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            font-weight: 600;
        }

        /* Conversations List */
        .convo-list-header {
            display: grid;
            grid-template-columns: 100px 110px 1fr;
            gap: 12px;
            padding: 8px 14px;
            font-size: 0.68rem;
            font-weight: 700;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            border-bottom: 1px solid rgba(255,255,255,0.04);
        }
        .convo-list {
            max-height: 360px;
            overflow-y: auto;
        }
        .convo-row {
            display: grid;
            grid-template-columns: 100px 110px 1fr;
            gap: 12px;
            padding: 10px 14px;
            font-size: 0.8rem;
            border-bottom: 1px solid rgba(255,255,255,0.025);
            transition: background 0.2s ease;
            align-items: center;
        }
        .convo-row:hover {
            background: rgba(255,255,255,0.02);
        }
        .convo-row:last-child {
            border-bottom: none;
        }
        .convo-ip {
            color: var(--text-muted);
            font-family: 'SF Mono', 'Fira Code', monospace;
            font-size: 0.72rem;
        }
        .convo-time {
            color: var(--text-muted);
            font-size: 0.74rem;
        }
        .convo-preview {
            color: var(--text-secondary);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .config-empty {
            text-align: center;
            padding: 2.5rem 1rem;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* Responsive */
        @media (max-width: 640px) {
            .page-config-panel { padding: 1rem 0; }
            .config-tabs { flex-direction: column; }
            .config-field-row { flex-direction: column; gap: 0; }
            .config-stats-row { grid-template-columns: repeat(2, 1fr); }
            .convo-list-header,
            .convo-row { grid-template-columns: 80px 90px 1fr; gap: 8px; font-size: 0.72rem; }
        }