/* ══ Infinsight specific overrides & additions ══ */

    /* Accent color for Infinsight: electric teal-blue */
    :root {
      --ins-accent: #3b82f6;
      --ins-accent2: #06b6d4;
      --ins-accent-glow: rgba(59,130,246,0.25);
      --ins-surface: #12121a;
      --ins-card: #1a1a2e;
      --ins-border: rgba(59,130,246,0.15);
      --ins-text-dim: #6b7280;
      --sidebar-w: 280px;
    }
    [data-theme="light"] {
      --ins-surface: #f0f4ff;
      --ins-card: #ffffff;
      --ins-border: rgba(59,130,246,0.2);
    }

    body { overflow: hidden; }

    /* ── Page layout ── */
    .ins-layout {
      display: flex;
      height: 100vh;
      background: var(--bg);
      overflow: hidden;
    }

    /* ── Sidebar ── */
    .ins-sidebar {
      /* margin-top: 57px; */
      width: var(--sidebar-w);
      background: var(--surface);
      border-right: 1px solid var(--ins-border);
      display: flex;
      flex-direction: column;
      flex-shrink: 0;
      overflow: hidden;
      transition: transform 0.3s ease;
    }

    .ins-sidebar-header {
      padding: 18px 16px 12px;
      border-bottom: 1px solid var(--border);
      flex-shrink: 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .ins-back-btn {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.78rem;
      font-weight: 600;
      letter-spacing: 0.04em;
      padding: 6px 10px 6px 0;
      margin-bottom: 12px;
      transition: color 0.2s;
    }
    .ins-back-btn:hover { color: var(--text); }

    .ins-sidebar-hero-btn {
      display: flex;
      align-items: center;
      gap: 9px;
      margin: auto 16px 16px;
      padding: 10px 14px;
      background: rgba(59,130,246,0.06);
      border: 1px solid rgba(59,130,246,0.2);
      border-radius: 12px;
      color: var(--text);
      font-family: var(--font-head);
      font-size: 0.82rem;
      font-weight: 700;
      text-decoration: none;
      transition: all 0.2s;
    }
    .ins-sidebar-hero-btn:hover {
      background: rgba(59,130,246,0.12);
      border-color: rgba(59,130,246,0.35);
      transform: translateY(-1px);
    }
    .ins-sidebar-hero-btn img {
      width: 18px;
      height: 18px;
      border-radius: 4px;
      object-fit: cover;
    }

    .ins-brand {
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .ins-brand-icon {
      width: 36px; height: 36px;
      border-radius: 10px;
      background: linear-gradient(135deg, var(--ins-accent), var(--ins-accent2));
      display: flex; align-items: center; justify-content: center;
      font-size: 1rem; color: #fff;
      box-shadow: 0 0 16px var(--ins-accent-glow);
    }
    .ins-brand-name {
      font-family: var(--font-head);
      font-size: 1.1rem;
      font-weight: 800;
      background: linear-gradient(135deg, var(--ins-accent), var(--ins-accent2));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .ins-brand-tag {
      font-size: 0.65rem;
      color: var(--text-dim);
      font-weight: 600;
      letter-spacing: 0.06em;
      text-transform: uppercase;
    }

    /* Upload button */
    .ins-upload-btn {
      display: flex;
      align-items: center;
      gap: 9px;
      padding: 10px 14px;
      margin: 12px 16px 4px;
      background: linear-gradient(135deg, var(--ins-accent), var(--ins-accent2));
      border: none;
      border-radius: 12px;
      color: #fff;
      font-family: var(--font-head);
      font-size: 0.82rem;
      font-weight: 700;
      cursor: pointer;
      letter-spacing: 0.03em;
      transition: opacity 0.2s, transform 0.15s;
      box-shadow: 0 4px 16px var(--ins-accent-glow);
    }
    .ins-upload-btn:hover { opacity: 0.88; transform: translateY(-1px); }

    /* Sessions list */
    .ins-sessions-label {
      padding: 14px 18px 6px;
      font-size: 0.65rem;
      font-weight: 700;
      letter-spacing: 0.1em;
      text-transform: uppercase;
      color: var(--text-dim);
    }

    .ins-sessions-list {
      flex: 1;
      overflow-y: auto;
      scrollbar-width: none;
      padding: 0 8px;
    }
    .ins-sessions-list::-webkit-scrollbar { display: none; }

    .ins-session-item {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px 10px;
      border-radius: 10px;
      cursor: pointer;
      transition: background 0.15s;
      position: relative;
      margin-bottom: 2px;
    }
    .ins-session-item:hover { background: var(--surface2); }
    .ins-session-item.active {
      background: rgba(59,130,246,0.1);
      border: 1px solid rgba(59,130,246,0.2);
    }

    .ins-session-icon {
      width: 32px; height: 32px; border-radius: 8px;
      display: flex; align-items: center; justify-content: center;
      font-size: 0.82rem; flex-shrink: 0;
    }
    .ins-session-icon.csv   { background: rgba(25,195,125,0.15); color: var(--accent); }
    .ins-session-icon.excel { background: rgba(25,195,125,0.15); color: #22c55e; }
    .ins-session-icon.pdf   { background: rgba(239,68,68,0.15);  color: #ef4444; }

    .ins-session-info { flex: 1; min-width: 0; }
    .ins-session-name {
      font-size: 0.82rem; font-weight: 600; color: var(--text);
      white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    }
    .ins-session-meta {
      font-size: 0.7rem; color: var(--text-dim); margin-top: 1px;
    }

    .ins-session-del {
      background: none; border: none;
      color: var(--text-dim); cursor: pointer;
      padding: 4px 5px; border-radius: 5px;
      opacity: 0; transition: all 0.15s;
      font-size: 0.7rem;
    }
    .ins-session-item:hover .ins-session-del { opacity: 1; }
    .ins-session-del:hover { background: rgba(239,68,68,0.15); color: #ef4444; }

    .ins-status-dot {
      width: 6px; height: 6px; border-radius: 50%;
      flex-shrink: 0; margin-top: 2px;
    }
    .ins-status-dot.processing { background: #f59e0b; animation: pulse-dot 1.5s infinite; }
    .ins-status-dot.ready      { background: var(--accent); }
    .ins-status-dot.error      { background: #ef4444; }

    /* Empty state */
    .ins-sessions-empty {
      padding: 24px 16px; text-align: center;
    }
    .ins-sessions-empty i { font-size: 1.6rem; color: var(--text-dim); display: block; margin-bottom: 8px; }
    .ins-sessions-empty p { font-size: 0.78rem; color: var(--text-dim); line-height: 1.5; }

    /* ── Main content area ── */
    .ins-main {
      flex: 1;
      display: flex;
      flex-direction: column;
      overflow: hidden;
      position: relative;
    }

    /* ── Top bar ── */
    .ins-topbar {
      height: 58px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 20px;
      border-bottom: 1px solid var(--border);
      background: rgba(13,13,15,0.85);
      backdrop-filter: blur(12px);
      flex-shrink: 0;
      position: relative;
      z-index: 100;
    }
    [data-theme="light"] .ins-topbar { background: rgba(245,247,248,0.85); }

    .ins-topbar-left { display: flex; align-items: center; gap: 12px; }
    .ins-topbar-right { display: flex; align-items: center; gap: 10px; }

    .ins-session-title-display {
      font-family: var(--font-head);
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--text);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
      max-width: 300px;
    }

    .ins-session-badge {
      padding: 3px 10px;
      border-radius: 20px;
      font-size: 0.65rem;
      font-weight: 700;
      letter-spacing: 0.05em;
      text-transform: uppercase;
    }
    .ins-session-badge.csv   { background: rgba(25,195,125,0.15); color: var(--accent); }
    .ins-session-badge.excel { background: rgba(34,197,94,0.15); color: #22c55e; }
    .ins-session-badge.pdf   { background: rgba(239,68,68,0.15); color: #ef4444; }
    .ins-session-badge.none  { background: var(--surface2); color: var(--text-dim); }

    .ins-menu-toggle {
      display: none;
      background: none; border: none;
      color: var(--text-muted); cursor: pointer;
      padding: 6px; border-radius: 8px; font-size: 1rem;
    }
    .ins-menu-toggle:hover { background: var(--surface2); }

    /* Theme toggle (reuses existing style) */
    .ins-theme-btn {
      width: 32px; height: 32px;
      border-radius: 8px; border: 1px solid var(--border);
      background: var(--surface2);
      color: var(--text-muted);
      display: flex; align-items: center; justify-content: center;
      cursor: pointer; font-size: 0.8rem;
      transition: all 0.2s;
    }
    .ins-theme-btn:hover { background: var(--surface3); color: var(--text); }

    /* ── Welcome / Empty state ── */
    .ins-welcome {
      flex: 1;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      padding: 40px 24px;
      text-align: center;
      animation: fadeUp 0.5s ease both;
    }

    .ins-welcome-icon {
      width: 80px; height: 80px;
      border-radius: 22px;
      background: linear-gradient(135deg, var(--ins-accent), var(--ins-accent2));
      display: flex; align-items: center; justify-content: center;
      font-size: 2rem; color: #fff;
      margin: 0 auto 24px;
      box-shadow: 0 0 40px var(--ins-accent-glow);
      animation: glow-pulse 3s ease-in-out infinite;
    }
    @keyframes glow-pulse {
      0%,100% { box-shadow: 0 0 20px var(--ins-accent-glow); }
      50% { box-shadow: 0 0 40px rgba(59,130,246,0.5); }
    }

    .ins-welcome h1 {
      font-family: var(--font-head); font-size: 1.3rem; font-weight: 800;
      margin-bottom: 10px; color: var(--text);
    }
    .ins-welcome p { color: var(--text-muted); font-size: 0.9rem; max-width: 380px; line-height: 1.7; }

    .ins-capabilities {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      margin-top: 28px;
      max-width: 520px;
      width: 100%;
    }
    .ins-cap-card {
      background: var(--surface2);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 14px 12px;
      text-align: center;
      font-size: 0.78rem;
      color: var(--text-muted);
      line-height: 1.5;
    }
    .ins-cap-card i { display: block; font-size: 1.1rem; margin-bottom: 6px; color: var(--ins-accent); }

    /* Upload drag zone */
    .ins-drop-zone {
      border: 2px dashed rgba(59,130,246,0.3);
      border-radius: 16px;
      padding: 28px 20px;
      margin-top: 24px;
      max-width: 420px;
      width: 100%;
      cursor: pointer;
      transition: all 0.2s;
      background: rgba(59,130,246,0.03);
    }
    .ins-drop-zone:hover, .ins-drop-zone.drag-over {
      border-color: var(--ins-accent);
      background: rgba(59,130,246,0.08);
    }
    .ins-drop-zone i { font-size: 1.8rem; color: var(--ins-accent); margin-bottom: 10px; display: block; }
    .ins-drop-zone p { color: var(--text-muted); font-size: 0.82rem; margin-bottom: 4px; }
    .ins-drop-zone span { font-size: 0.72rem; color: var(--text-dim); }

    /* ── Chat area ── */
    .ins-chat-area {
      display: none;
      flex-direction: column;
      flex: 1;
      overflow: hidden;
    }
    .ins-chat-area.active { display: flex; }

    /* Processing banner */
    .ins-processing-banner {
      display: none;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 9px 20px;
      background: rgba(245,166,35,0.1);
      border-bottom: 1px solid rgba(245,166,35,0.2);
      font-size: 0.78rem;
      color: #f59e0b;
      font-weight: 500;
      flex-shrink: 0;
    }
    .ins-processing-banner.visible { display: flex; }
    .ins-processing-spinner {
      width: 14px; height: 14px;
      border: 2px solid rgba(245,166,35,0.3);
      border-top-color: #f59e0b;
      border-radius: 50%;
      animation: spin 0.8s linear infinite;
    }
    @keyframes spin { to { transform: rotate(360deg); } }

    /* Messages */
    .ins-messages {
      flex: 1;
      overflow-y: auto;
      padding: 24px 0;
      scroll-behavior: smooth;
    }
    .ins-messages::-webkit-scrollbar { width: 5px; }
    .ins-messages::-webkit-scrollbar-thumb { background: var(--surface3); border-radius: 4px; }

    /* Reuse existing msg-row */
    .ins-msg-row {
      display: flex;
      padding: 6px 24px;
      max-width: 860px;
      margin: 0 auto;
      width: 100%;
      gap: 14px;
      animation: fadeUp 0.3s ease both;
    }

    .ins-avatar {
      width: 34px; height: 34px;
      border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      font-size: 0.8rem; font-weight: 700;
      font-family: var(--font-head);
      flex-shrink: 0; margin-top: 2px;
    }
    .ins-avatar.user { background: var(--ins-accent); color: #fff; }
    .ins-avatar.ai {
      background: linear-gradient(135deg, var(--ins-accent), var(--ins-accent2));
      color: #fff;
    }

    .ins-msg-content {
      flex: 1; font-size: 0.9rem; line-height: 1.75;
      color: var(--text); padding-top: 4px;
    }
    .ins-sender {
      font-family: var(--font-head); font-size: 0.72rem; font-weight: 700;
      letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 5px;
    }
    .ins-sender.user { color: var(--ins-accent); }
    .ins-sender.ai   { color: var(--ins-accent2); }

    .ins-bubble { word-break: break-word; }
    .ins-bubble h1, .ins-bubble h2, .ins-bubble h3 {
      margin: 14px 0 6px; font-weight: 700; color: var(--text);
    }
    .ins-bubble h1 { font-size: 1.1rem; border-bottom: 1px solid var(--border); padding-bottom: 5px; }
    .ins-bubble h2 { font-size: 1rem; }
    .ins-bubble h3 { font-size: 0.9rem; color: var(--ins-accent2); }
    .ins-bubble p  { margin: 6px 0; }
    .ins-bubble ul, .ins-bubble ol { margin: 6px 0 6px 18px; }
    .ins-bubble li { margin-bottom: 3px; }
    .ins-bubble strong { color: var(--text); font-weight: 700; }
    .ins-bubble em { color: var(--ins-accent2); font-style: italic; }
    .ins-bubble code {
      background: var(--surface2); padding: 1px 6px; border-radius: 4px;
      font-family: 'Fira Code', monospace; font-size: 0.82em; color: #a5f3fc;
    }
    .ins-bubble pre {
      background: var(--surface2); border: 1px solid var(--border);
      border-radius: 10px; padding: 14px 16px; overflow-x: auto;
      margin: 10px 0; font-size: 0.83rem;
    }
    .ins-bubble pre code { background: none; padding: 0; color: inherit; }
    .ins-bubble table {
      border-collapse: collapse; width: 100%; margin: 10px 0;
      font-size: 0.83rem; border-radius: 8px; overflow: hidden;
    }
    .ins-bubble th {
      background: rgba(59,130,246,0.15); color: var(--ins-accent2);
      padding: 8px 12px; font-weight: 700; text-align: left;
      border-bottom: 1px solid var(--ins-border);
    }
    .ins-bubble td {
      padding: 7px 12px; border-bottom: 1px solid rgba(255,255,255,0.04);
      vertical-align: top;
    }
    .ins-bubble tbody tr:last-child td { border-bottom: none; }
    .ins-bubble tbody tr:hover { background: rgba(255,255,255,0.02); }

    /* Typing indicator */
    .ins-typing {
      display: flex; align-items: center; gap: 6px;
      padding: 4px 0;
    }
    .ins-typing-label {
      font-size: 0.82rem; color: var(--text-dim);
    }
    .ins-tb-wrap { display: flex; gap: 4px; align-items: flex-end; height: 14px; }
    .ins-tb {
      width: 5px; height: 5px; border-radius: 50%;
      background: var(--ins-accent);
      animation: tbBounce 0.5s alternate infinite ease;
    }
    .ins-tb:nth-child(1) { animation-delay: 0s; }
    .ins-tb:nth-child(2) { animation-delay: 0.17s; }
    .ins-tb:nth-child(3) { animation-delay: 0.30s; }

    /* Source chips */
    .ins-sources {
      display: flex; flex-wrap: wrap; gap: 5px; margin-top: 10px;
    }
    .ins-source-chip {
      display: inline-flex; align-items: center; gap: 4px;
      padding: 2px 9px; border-radius: 20px; font-size: 0.68rem;
      font-weight: 600; letter-spacing: 0.04em;
      background: rgba(59,130,246,0.1);
      border: 1px solid rgba(59,130,246,0.2);
      color: var(--ins-accent);
    }

    /* ── Input bar ── */
    .ins-input-wrap {
      padding: 14px 20px 18px;
      background: var(--bg);
      border-top: 1px solid var(--border);
      flex-shrink: 0;
    }

    .ins-input-box {
      max-width: 860px; margin: 0 auto;
      display: flex; align-items: flex-end; gap: 10px;
      background: var(--surface);
      border: 1.5px solid var(--border);
      border-radius: 16px;
      padding: 10px 12px;
      transition: border-color 0.25s, box-shadow 0.25s;
    }
    .ins-input-box:focus-within {
      border-color: rgba(59,130,246,0.5);
      box-shadow: 0 0 0 3px rgba(59,130,246,0.08);
    }

    .ins-textarea {
      flex: 1; background: transparent; border: none;
      color: var(--text); font-family: var(--font-body);
      font-size: 0.9rem; line-height: 1.55; resize: none;
      max-height: 180px; min-height: 24px; outline: none;
      scrollbar-width: none;
    }
    .ins-textarea::placeholder { color: var(--text-dim); }

    .ins-home-btn {
      width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--border);
      background: var(--surface2); color: var(--text-muted);
      display: flex; align-items: center; justify-content: center;
      cursor: pointer; flex-shrink: 0; align-self: flex-end;
      transition: background 0.2s, color 0.2s, border-color 0.2s; font-size: 0.9rem; text-decoration: none;
    }
    .ins-home-btn:hover { background: var(--surface3); color: var(--text); border-color: rgba(59,130,246,0.4); }

    .ins-send-btn {
      width: 36px; height: 36px; border-radius: 10px; border: none;
      background: linear-gradient(135deg, var(--ins-accent), var(--ins-accent2));
      color: #fff; font-size: 0.85rem;
      display: flex; align-items: center; justify-content: center;
      cursor: pointer; flex-shrink: 0; align-self: flex-end;
      transition: opacity 0.2s, transform 0.15s;
      box-shadow: 0 2px 10px var(--ins-accent-glow);
    }
    .ins-send-btn:hover { opacity: 0.85; transform: scale(1.06); }
    .ins-send-btn:disabled {
      background: var(--surface3); color: var(--text-dim);
      cursor: default; transform: none; box-shadow: none;
    }

    .ins-hint {
      text-align: center; font-size: 0.68rem; color: var(--text-dim);
      margin-top: 8px;
    }

    /* ── Upload modal ── */
    .ins-upload-modal {
      position: fixed; inset: 0;
      background: rgba(0,0,0,0.8); backdrop-filter: blur(10px);
      z-index: 600; display: none; align-items: center; justify-content: center;
      padding: 24px;
    }
    .ins-upload-modal.active { display: flex; }
    .ins-upload-card {
      background: var(--surface);
      border: 1px solid var(--ins-border);
      border-radius: 22px; padding: 36px 32px;
      width: 100%; max-width: 460px;
      box-shadow: 0 24px 80px rgba(0,0,0,0.7);
      animation: fadeUp 0.3s ease both;
    }
    .ins-upload-card h2 {
      font-family: var(--font-head); font-size: 1.2rem; font-weight: 800;
      margin-bottom: 6px; display: flex; align-items: center; gap: 9px;
    }
    .ins-upload-card h2 i { color: var(--ins-accent); }
    .ins-upload-card p { color: var(--text-muted); font-size: 0.84rem; margin-bottom: 22px; line-height: 1.6; }

    .ins-file-drop {
      border: 2px dashed rgba(59,130,246,0.3);
      border-radius: 14px; padding: 32px 20px;
      text-align: center; cursor: pointer;
      transition: all 0.2s;
      background: rgba(59,130,246,0.03);
      margin-bottom: 18px;
    }
    .ins-file-drop:hover, .ins-file-drop.drag-over {
      border-color: var(--ins-accent);
      background: rgba(59,130,246,0.08);
    }
    .ins-file-drop i { font-size: 2rem; color: var(--ins-accent); margin-bottom: 12px; display: block; }
    .ins-file-drop .drop-text { font-size: 0.88rem; color: var(--text-muted); }
    .ins-file-drop .drop-sub { font-size: 0.73rem; color: var(--text-dim); margin-top: 4px; }
    .ins-file-drop.has-file { border-color: var(--accent); background: rgba(25,195,125,0.08); }

    .ins-selected-file {
      display: none; align-items: center; gap: 10px;
      background: var(--surface2); border: 1px solid var(--border);
      border-radius: 10px; padding: 10px 14px; margin-bottom: 18px;
    }
    .ins-selected-file.visible { display: flex; }
    .ins-selected-file i { color: var(--ins-accent); }
    .ins-file-name { flex: 1; font-size: 0.82rem; font-weight: 600; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .ins-file-size { font-size: 0.72rem; color: var(--text-dim); flex-shrink: 0; }
    .ins-file-remove { background: none; border: none; cursor: pointer; color: var(--text-dim); font-size: 0.75rem; padding: 4px; border-radius: 4px; transition: color 0.15s; }
    .ins-file-remove:hover { color: #ef4444; }

    .ins-upload-progress {
      display: none;
      background: var(--surface2); border-radius: 8px;
      height: 4px; overflow: hidden; margin-bottom: 16px;
    }
    .ins-upload-progress.visible { display: block; }
    .ins-progress-bar {
      height: 100%;
      background: linear-gradient(90deg, var(--ins-accent), var(--ins-accent2));
      border-radius: 8px;
      transition: width 0.3s ease;
      width: 0%;
    }

    .ins-upload-actions { display: flex; gap: 10px; }
    .ins-upload-cancel {
      flex: 0 0 auto; padding: 11px 20px; border-radius: 10px;
      border: 1px solid var(--border); background: var(--surface2);
      color: var(--text-muted); font-family: var(--font-body);
      font-size: 0.85rem; font-weight: 600; cursor: pointer;
      transition: background 0.2s;
    }
    .ins-upload-cancel:hover { background: var(--surface3); color: var(--text); }
    .ins-upload-submit {
      flex: 1; padding: 11px; border-radius: 10px; border: none;
      background: linear-gradient(135deg, var(--ins-accent), var(--ins-accent2));
      color: #fff; font-family: var(--font-head);
      font-size: 0.9rem; font-weight: 700; cursor: pointer;
      transition: opacity 0.2s;
      display: flex; align-items: center; justify-content: center; gap: 8px;
    }
    .ins-upload-submit:hover { opacity: 0.88; }
    .ins-upload-submit:disabled { opacity: 0.5; cursor: not-allowed; }

    .ins-info-box {
      display: flex; align-items: flex-start; gap: 10px;
      background: rgba(59,130,246,0.08); border: 1px solid rgba(59,130,246,0.2);
      border-radius: 10px; padding: 12px 14px; margin-bottom: 18px;
    }
    .ins-info-box i { color: var(--ins-accent); flex-shrink: 0; margin-top: 2px; }
    .ins-info-box span { font-size: 0.78rem; color: var(--text-muted); line-height: 1.55; }

    /* ── Notification ── */
    .ins-notif {
      position: fixed; top: 20px; right: 20px;
      padding: 12px 18px; border-radius: 10px;
      font-size: 0.85rem; font-weight: 500; color: #fff;
      z-index: 9999; box-shadow: 0 4px 16px rgba(0,0,0,0.3);
      transform: translateX(400px); opacity: 0;
      transition: all 0.3s cubic-bezier(0.68,-0.55,0.265,1.55);
      max-width: 320px;
    }
    .ins-notif.show { transform: translateX(0); opacity: 1; }
    .ins-notif.success { background: linear-gradient(135deg, #0f8a55, #19c37d); }
    .ins-notif.error   { background: linear-gradient(135deg, #e74c3c, #c0392b); }
    .ins-notif.info    { background: linear-gradient(135deg, var(--ins-accent), var(--ins-accent2)); }

    /* ── Responsive ── */
    @media (max-width: 768px) {
      .ins-sidebar {
        position: fixed; top: 0; left: 0; bottom: 0; z-index: 200;
        transform: translateX(-100%);
        margin-top: 57px;
      }
      .ins-sidebar.open { margin-top: 57px; transform: translateX(0); box-shadow: 6px 0 30px rgba(0,0,0,0.5); }
      .ins-menu-toggle { display: flex; align-items: center; justify-content: center; }
      .ins-capabilities { grid-template-columns: repeat(2, 1fr); }
      .ins-msg-row { padding: 6px 14px; }
      .ins-input-wrap { padding: 10px 14px 14px; }
      .ins-topbar { padding: 0 12px; gap: 8px; }
      .ins-topbar-left { flex: 1; min-width: 0; }
      .ins-session-title-display { font-size: 1rem; max-width: 140px; }
      .ins-topbar-right { flex-shrink: 0; }
      .ins-send-btn, .ins-home-btn { width: 32px; height: 32px; font-size: 0.8rem; }
      .ins-textarea { font-size: 0.85rem; }
      .ins-msg-content { font-size: 0.85rem; }
      .ins-upload-btn { padding: 8px 10px; font-size: 0.75rem; }
      .ins-bubble pre { font-size: 0.75rem; padding: 10px 12px; }
      .ins-brand-name { font-size: 1.05rem; }
      .ins-user-name { display: none; }
      .ins-user-chip { padding: 4px; border-radius: 50%; border: none; background: transparent; }
      .ins-user-chip:hover { background: var(--surface2); }
    }