:root {
    --cell-bg: #fbfaff;
    --cell-bg-added: #eef7f2;
    --cell-border: #81798e;
    --active-border: #1a73e8;
    --highlight: #c9ecd0;
    --gutter: #625d70;
    --gutter-ran: #202124;
    --code: #202124;
    --kw: #a625a4;
    --com: #007400;
    --str: #c41a16;
    --prm: #0b5fcc;
    --gemini: #1a73e8;
    --surface: #ffffff;
    --surface-chat: #fbfaff;
    --surface-input: #f8f6fc;
    --surface-hover: #ece9f2;
    --surface-hover-strong: #d8d3e2;
    --action-hover: #ebe8f7;
    --surface-pressed: #d3e3fd;
    --toolbar-border: #cbc5d3;
    --text: #1f1f1f;
    --text-secondary: #3f3b47;
    --text-muted: #716b7d;
    --text-disabled: #777184;
    --link: #0b57d0;
    --spark: #4285f4;
    --run-bg: #1f1f1f;
    --run-icon: #ffffff;
    --mouse-fill: #ffffff;
    --mouse-stroke: #1f1f1f;
    --toolbar-shadow: 0 2px 8px rgba(0, 0, 0, 0.10);
    --panel-shadow: 0 6px 24px rgb(91 63 224 / 22%);
    --active-glow: 0 0 10px 0 #1a73e866,
                   0 0 20px 5px rgba(11, 87, 208, 0.05),
                   0 4px 40px 8px rgba(11, 87, 208, 0.14);
    --input-glow: 0 0 12px 5px rgba(11, 87, 208, 0.05),
                  0 4px 40px 8px rgba(11, 87, 208, 0.14);
    --running-glow: 0 0 0 0.5px var(--active-border),
                    0 0 0 5px rgba(11, 87, 208, 0.05),
                    0 4px 40px 8px rgba(11, 87, 208, 0.14);
    --demo-color-accent: var(--gemini);
    --demo-color-text: var(--text);
    --demo-color-control: var(--surface-hover);
    --demo-color-control-hover: var(--surface-hover-strong);
    --demo-color-track: var(--surface-hover-strong);
  }

  /* Colab-inspired dark surfaces and syntax colors. */
  :root.dark {
    --cell-bg: #202124;
    --cell-bg-added: #1b3326;
    --cell-border: #5f6368;
    --active-border: #8ab4f8;
    --highlight: #294936;
    --gutter: #a8adb4;
    --gutter-ran: #e8eaed;
    --code: #e8eaed;
    --kw: #c58af9;
    --com: #81c995;
    --str: #f28b82;
    --prm: #8ab4f8;
    --surface: #292a2d;
    --surface-chat: #202124;
    --surface-input: #292a2d;
    --surface-hover: #3c4043;
    --surface-hover-strong: #4b4f52;
    --action-hover: #303f53;
    --surface-pressed: #394f6b;
    --toolbar-border: #5f6368;
    --text: #e8eaed;
    --text-secondary: #bdc1c6;
    --text-muted: #9aa0a6;
    --text-disabled: #6f7378;
    --link: #8ab4f8;
    --spark: #8ab4f8;
    --run-bg: #e8eaed;
    --run-icon: #202124;
    --mouse-fill: #e8eaed;
    --mouse-stroke: #202124;
    --toolbar-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
    --panel-shadow: 0 8px 28px rgb(54 42 111 / 45%);
    --active-glow: 0 0 10px 0 rgba(138, 180, 248, 0.42),
                   0 0 20px 5px rgba(138, 180, 248, 0.08),
                   0 4px 40px 8px rgba(0, 0, 0, 0.28);
    --input-glow: 0 0 12px 5px rgba(138, 180, 248, 0.10),
                  0 4px 40px 8px rgba(0, 0, 0, 0.28);
    --running-glow: 0 0 0 0.5px var(--active-border),
                    0 0 0 5px rgba(138, 180, 248, 0.08),
                    0 4px 40px 8px rgba(0, 0, 0, 0.28);
  }

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

  :root,
  :root.dark {
    background-color: transparent !important;
  }

  body {
    /* The embedding surface owns the backdrop: transparent on project cards,
       and purple on the full case-study iframe. */
    background: transparent !important;
    font-family: "Google Sans", "Helvetica Neue", Arial, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
  }

  /* Standalone and case-study embeds reserve a dedicated row for playback so
     the scrubber does not overlap the final chat card. Card mode hides it. */
  body:not(.is-card) {
    padding-bottom: 88px;
  }
  body:not(.is-card) .demo-timeline {
    bottom: 20px;
  }

  .frame {
    width: min(720px, calc(100vw - clamp(24px, 6vw, 64px)));
    max-width: 100%;
    border-radius: 14px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    padding: 0;
  }

  body.is-card .cell-code {
    font-size: clamp(10px, 1.9vw, 13.5px);
  }

  body.is-card .chat-user-text,
  body.is-card .chat-ai-text,
  body.is-card .chat-actions button {
    font-size: clamp(11px, 2vw, 14.5px);
  }

  body.is-card .chat-input-text {
    font-size: clamp(11px, 2.1vw, 15px);
  }

  .notebook {
    --notebook-gap: 20px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--notebook-gap);
    margin-bottom: calc(0px - var(--notebook-gap));
    /* cancels the frame gap while empty */
    transition: margin-bottom 0.4s cubic-bezier(0.32, 0.72, 0, 1);
  }
  .notebook.active {
    margin-bottom: 0;
  }

  /* ---------- cell row ---------- */
  /* Collapsed rows animate open via grid-template-rows so the layout grows
     smoothly (no display:none jump) using only compositor-friendly props. */
  .cell-row {
    position: relative;
    display: grid;
    grid-template-rows: 0fr;
    opacity: 0;
    transform: translateY(12px);
    margin-bottom: calc(0px - var(--notebook-gap));
    /* cancels the notebook flex gap while collapsed */
    transition: grid-template-rows 0.4s cubic-bezier(0.32, 0.72, 0, 1),
                margin-bottom 0.4s cubic-bezier(0.32, 0.72, 0, 1),
                transform 0.4s cubic-bezier(0.32, 0.72, 0, 1),
                opacity 0.3s ease 0.05s;
  }
  .cell-row.visible {
    grid-template-rows: 1fr;
    opacity: 1;
    transform: translateY(0);
    margin-bottom: 0;
  }
  .cell-inner {
    display: flex;
    align-items: flex-start;
    min-height: 0;
    overflow: hidden;   /* required for the 0fr -> 1fr expansion */
  }
  /* once expanded, let the Gemini tag and toolbar overhang the cell again */
  .cell-row.settled .cell-inner { overflow: visible; }

  /* ---------- gutter ---------- */
  .gutter {
    position: absolute;
    top: 0;
    right: 100%;      /* hangs outside the column so cells align with the chat */
    width: 70px;
    padding-top: 12px;
    display: flex;
    justify-content: center;
  }
  .gutter .brackets {
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-size: 13px;
    color: var(--gutter);
    white-space: pre;
  }
  .run-btn {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--run-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    flex: none;
    margin: 1px 12px 0 0;
    opacity: 0;
    transform: scale(0.6);
    transition: opacity 0.25s ease, transform 0.25s ease,
                background-color 0.3s ease;
  }
  /* Material Symbols base */
  .msym {
    font-family: "Material Symbols Rounded";
    font-weight: normal;
    font-style: normal;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    direction: ltr;
    -webkit-font-smoothing: antialiased;
    font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 20;
    user-select: none;
  }
  .run-btn .msym {
    font-size: 14px;
    color: var(--run-icon);
    transition: color 0.3s ease;
    font-variation-settings: "FILL" 1, "wght" 400, "GRAD" 0, "opsz" 20;
  }
  .gemini-tag .msym {
    font-size: 14px;
    font-variation-settings: "FILL" 1, "wght" 400, "GRAD" 0, "opsz" 20;
  }
  .toolbar .msym { font-size: 17px; }
  .cell-row.active .run-btn {
    opacity: 1;
    transform: scale(1);
  }

  /* ---------- cell ---------- */
  .cell-wrap {
    position: relative;
    flex: 1;
    min-width: 0;
  }

  .cell {
    display: flex;
    flex-direction: column;
    background: var(--cell-bg);
    border: 1.5px solid var(--cell-border);
    border-radius: 10px;
    overflow: hidden;   /* keeps the attached output inside the rounded corners */
    transition: border-color 0.3s ease, box-shadow 0.3s ease,
                border-top-left-radius 0.25s ease, background-color 0.4s ease;
  }
  .cell-main {
    display: flex;
    align-items: flex-start;
    padding: 14px 18px;
  }
  .cell-row.added .cell { background: var(--cell-bg-added); }
  .cell-row.active .cell {
    border-color: var(--active-border);
    box-shadow: var(--active-glow);
  }
  .cell-row.tagged .cell { border-top-left-radius: 0; }

  .cell-code {
    flex: 1;
    min-width: 0;
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-size: 13.5px;
    line-height: 1.65;
    color: var(--code);
    transition: color 0.3s ease;
    overflow-x: auto;
  }

  .line {
    display: none;
    white-space: pre;
    min-height: 1.65em;
  }
  .line.on { display: block; }
  .line .hl {
    background: var(--highlight);
    border-radius: 2px;
    padding: 1.5px 0;
    transition: background-color 0.5s ease;
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
  }

  .tok-kw  { color: var(--kw); }
  .tok-com { color: var(--com); }
  .tok-str { color: var(--str); }
  .tok-prm { color: var(--prm); }
  .tok-kw, .tok-com, .tok-str, .tok-prm { transition: color 0.3s ease; }

  /* streaming cursor */
  .cursor {
    display: inline-block;
    width: 2px;
    height: 1.1em;
    background: var(--active-border);
    vertical-align: text-bottom;
    margin-left: 1px;
    animation: blink 0.9s steps(1) infinite;
  }
  @keyframes blink { 50% { opacity: 0; } }

  /* ---------- Gemini tag ---------- */
  .gemini-tag {
    position: absolute;
    bottom: calc(100% - 2px);
    left: -1px;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 7px;
    background: var(--gemini);
    color: #fff;
    font-size: 13px;
    font-weight: 500;
    padding: 6px 16px 7px 13px;
    border-radius: 8px 8px 0 0;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.25s ease, transform 0.25s ease;
    pointer-events: none;
  }
  .cell-row.tagged .gemini-tag {
    opacity: 1;
    transform: translateY(0);
  }
  .gemini-tag .icon-spinner { display: none; transform-origin: 50% 50%; }
  .cell-row.streaming .icon-spark { display: none; }
  .cell-row.streaming .icon-spinner {
    display: block;
    animation: spin 1s linear infinite;
  }
  @keyframes spin { to { transform: rotate(360deg); } }

  /* ---------- toolbar ---------- */
  .toolbar {
    position: absolute;
    top: -21px;
    right: 14px;
    z-index: 2;
    display: flex;
    align-items: center;
    background: var(--surface);
    border: 1px solid var(--toolbar-border);
    border-radius: 9px;
    box-shadow: var(--toolbar-shadow);
    padding: 3px;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.25s ease, transform 0.25s ease,
                background-color 0.3s ease, border-color 0.3s ease,
                box-shadow 0.3s ease;
  }
  .cell-row.active .toolbar {
    opacity: 1;
    transform: translateY(0);
  }
  .toolbar button {
    appearance: none;
    border: 0;
    background: none;
    padding: 4px 7px;
    border-radius: 6px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    transition: color 0.3s ease, background-color 0.2s ease;
  }
  .toolbar button:hover { background: var(--surface-hover); }

  /* ---------- chat ---------- */
  .chat {
    width: 100%;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 18px;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 16px;
    z-index: 10;
    font-family: "Google Sans", "Helvetica Neue", Arial, sans-serif;
    transition: background-color 0.3s ease, border-color 0.3s ease,
                box-shadow 0.3s ease, padding 0.3s ease;
  }
  .chat.centered {
    /* vertically centered hero state; slides back down when the prompt sends */
    /* transform removed since chat is now a flow element */
  }
  .chat.open {
    background: var(--surface-chat);
    border-color: var(--cell-border);
    box-shadow: var(--panel-shadow);
    padding: 18px 20px;
  }
  .chat-msg {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    max-height: 0;
    opacity: 0;
    transform: translateY(12px);
    margin-top: -16px;   /* cancel the flex gap while hidden */
    overflow: hidden;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                margin-top 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                opacity 0.4s ease 0.12s;
  }
  .chat-msg.show {
    max-height: 320px;
    opacity: 1;
    transform: translateY(0);
    margin-top: 0;
  }
  .avatar {
    position: relative;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, #b06ab3, #4568dc);
    display: flex;
    align-items: center;
    justify-content: center;
    flex: none;
    overflow: hidden;
  }
  .avatar img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  .avatar .msym {
    font-size: 16px;
    color: #fff;
    font-variation-settings: "FILL" 1, "wght" 400, "GRAD" 0, "opsz" 20;
  }
  .chat-user { align-items: center; }
  .chat-user-text { font-size: 14.5px; color: var(--text); }
  .chat-spark {
    flex: none;
    margin-top: 3px;
    fill: var(--spark);
    transition: fill 0.3s ease;
  }
  .chat-ai .chat-spinner {
    display: none;
    flex: none;
    font-size: 22px;   /* matches the spark size so the swap doesn't shift */
    color: var(--spark);
    margin-top: 2px;
    transform-origin: 50% 50%;
  }
  .chat-ai.thinking .chat-spark { display: none; }
  .chat-ai.thinking .chat-spinner {
    display: block;
    animation: spin 1s linear infinite;
  }
  .chat-ai.thinking .chat-ai-text { color: var(--text); }
  .chat-ai-body { flex: 1; min-width: 0; }
  .chat-ai-text { font-size: 14.5px; line-height: 1.55; color: var(--text); }
  .chat-ai-text a { color: var(--link); }
  .chat-user-text, .chat-ai-text, .chat-ai-text a {
    transition: color 0.3s ease;
  }
  .chat-actions {
    display: none;
    gap: 10px;
    margin-top: 10px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.35s ease;
  }
  .chat-actions.show {
    display: flex;
    opacity: 1;
    pointer-events: auto;
  }
  .chat-actions button {
    appearance: none;
    border: 0;
    background: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--link);
    font: 500 14.5px "Google Sans", "Helvetica Neue", Arial, sans-serif;
    padding: 6px 12px;
    border-radius: 999px;
    transition: background-color 0.2s ease, color 0.3s ease,
                transform 0.15s ease;
  }
  .chat-actions button:hover { background: var(--action-hover); }
  .chat-actions button:active { transform: scale(0.96); }
  .chat-actions .msym { font-size: 18px; }
  .chat-input {
    background: var(--surface-input);
    border: 1.5px solid var(--surface-hover-strong);
    border-radius: 999px;
    padding: 12px 8px;
    transition: background-color 0.25s ease, border-color 0.25s ease,
                box-shadow 0.25s ease;
  }
  /* bare hero state: blue border + glow */
  .chat-input.focus {
    background: var(--surface);
    border-color: var(--link);
    box-shadow: var(--input-glow);
  }
  /* grown into the card: blue border only, no glow */
  .chat.open .chat-input {
    background: var(--surface);
    border-color: var(--link);
    box-shadow: none;
  }
  .chat-input-text {
    flex: 1;
    min-width: 0;
    font-size: 15px;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
  }
  .chat-input-text, .chat-input-text .placeholder {
    transition: color 0.3s ease;
  }
  .chat-input-text .placeholder { color: var(--text-muted); }
  .chat-input-row {
    display: flex;
    align-items: center;
    gap: 4px;
  }
  .chat-input-row .msym { font-size: 20px; color: var(--text-secondary); cursor: pointer; }
  /* icon buttons: circular hover target, kept from growing the pill via -margin */
  .chat-input-row .add-btn,
  .chat-input-row .send-btn {
    flex: none;
    width: 32px;
    height: 32px;
    margin: -6px 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.2s ease, color 0.2s ease, transform 0.15s ease;
  }
  .chat-input-row .add-btn:hover { background: var(--surface-hover); }
  .chat-input-row .add-btn:active { transform: scale(0.9); }
  .chat-input-row .model {
    display: flex;
    align-items: center;
    gap: 2px;
    font-size: 14px;
    color: var(--text);
    cursor: pointer;
    flex: none;
    padding: 5px 6px 5px 10px;
    margin: -5px 0;
    border-radius: 999px;
    transition: background-color 0.2s ease, color 0.3s ease;
  }
  .chat-input-row .model:hover { background: var(--surface-hover); }
  .chat-input-row .send-btn {
    color: var(--text-disabled);          /* disabled until there is text */
    cursor: default;
  }
  .chat-input-row .send-btn.enabled {
    color: var(--text-secondary);
    cursor: pointer;
  }
  .chat-input-row .send-btn.enabled:hover { background: var(--surface-hover); }
  .chat-input-row .send-btn.enabled:active { transform: scale(0.9); }
  /* while the agent executes, the send button becomes a filled stop button */
  .chat-input-row .send-btn.stop {
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 24px;
  }
  .chat-input-row .send-btn.stop:hover { background: var(--surface-hover); }
  .chat-input-row .send-btn.stop:active { transform: scale(0.9); }

  /* ---------- fake mouse cursor ---------- */
  .mouse {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transform: translate(0, 0);
    transition: transform 0.9s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.3s ease;
  }
  .mouse.show { opacity: 1; }
  .mouse svg {
    display: block;
    filter: drop-shadow(0 1px 2px rgba(0,0,0,0.35));
    transform-origin: 5px 4px;
    transition: transform 0.12s ease;
  }
  .mouse path {
    fill: var(--mouse-fill);
    stroke: var(--mouse-stroke);
    transition: fill 0.3s ease, stroke 0.3s ease;
  }
  .mouse.click svg { transform: scale(0.82); }
  .mouse .ripple {
    position: absolute;
    top: -12px;
    left: -12px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    border: 2px solid rgba(11, 87, 208, 0.5);
    opacity: 0;
    transform: scale(0.3);
  }
  .mouse.click .ripple { animation: ripple 0.5s ease-out forwards; }
  @keyframes ripple {
    from { opacity: 0.9; transform: scale(0.3); }
    to   { opacity: 0; transform: scale(1.4); }
  }
  .chat-actions button.pressed { background: var(--surface-pressed); }

  /* ---------- cell execution ---------- */
  /* accepted cells lose the green diff highlight on the code */
  .cell-row.accepted .line .hl { background: transparent; }

  .cell-row.running .cell {
    border-color: var(--active-border);
    box-shadow: var(--running-glow);
  }
  /* while running, the play button becomes a plain spinner (no circle) */
  .run-btn .run-spinner {
    display: none;
    font-size: 18px;
    color: var(--text-secondary);
    transform-origin: 50% 50%;
    transition: color 0.3s ease;
  }
  .cell-row.running .run-btn {
    opacity: 1;
    transform: scale(1);
    background: transparent;
  }
  .cell-row.running .run-btn .msym:not(.run-spinner) { display: none; }
  .cell-row.running .run-btn .run-spinner {
    display: block;
    animation: spin 1s linear infinite;
  }
  /* when done: [n] plus a green check in the gutter */
  .gutter .gutter-check {
    display: none;
    font-size: 16px;
    color: var(--gemini);
    margin-right: 4px;
    font-variation-settings: "FILL" 0, "wght" 600, "GRAD" 0, "opsz" 20;
  }
  .cell-row.ran .gutter-check { display: block; }
  .gutter .brackets { transition: color 0.3s ease; }
  .cell-row.ran .brackets { color: var(--gutter-ran); }

  /* output attached to the bottom of the code cell */
  .cell-output {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.4s cubic-bezier(0.32, 0.72, 0, 1);
  }
  .cell-output.open { grid-template-rows: 1fr; }
  .cell-output-inner { overflow: hidden; min-height: 0; }
  .cell-output-row {
    display: flex;
    align-items: flex-start;
    padding: 12px 18px;
    border-top: 1px solid var(--cell-border);
    transition: border-color 0.3s ease;
  }
  .out-dots {
    visibility: hidden;   /* hidden but keeps the output aligned with the code */
    flex: none;
    width: 20px;
    margin: 2px 12px 0 0;   /* mirrors the run button column */
    font-size: 18px;
    color: var(--text-secondary);
    text-align: center;
    transition: color 0.3s ease;
  }
  .cell-output pre {
    margin: 0;
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-size: 13px;
    line-height: 1.65;
    color: var(--text-secondary);
    transition: color 0.3s ease;
    white-space: pre-wrap;
  }

  @media (max-width: 50rem) {
    :root {
      --panel-shadow: 0 6px 16px -10px rgb(91 63 224 / 45%);
      --active-glow: 0 0 0 3px rgba(26, 115, 232, 0.08),
                     0 6px 16px -10px rgba(11, 87, 208, 0.55);
      --input-glow: 0 0 0 3px rgba(26, 115, 232, 0.07),
                    0 6px 16px -10px rgba(11, 87, 208, 0.5);
      --running-glow: 0 0 0 0.5px var(--active-border),
                      0 0 0 3px rgba(26, 115, 232, 0.07),
                      0 6px 16px -10px rgba(11, 87, 208, 0.5);
    }

    :root.dark {
      --panel-shadow: 0 6px 16px -10px rgb(54 42 111 / 75%);
      --active-glow: 0 0 0 3px rgba(138, 180, 248, 0.1),
                     0 6px 16px -10px rgba(0, 0, 0, 0.8);
      --input-glow: 0 0 0 3px rgba(138, 180, 248, 0.09),
                    0 6px 16px -10px rgba(0, 0, 0, 0.75);
      --running-glow: 0 0 0 0.5px var(--active-border),
                      0 0 0 3px rgba(138, 180, 248, 0.09),
                      0 6px 16px -10px rgba(0, 0, 0, 0.75);
    }

    /* The execution gutter intentionally hangs outside the desktop notebook.
       Narrow card and case-study embeds both need that space back. */
    .gutter {
      display: none;
    }

    .frame {
      /* Reserve enough paint space between the last active cell and chat. */
      gap: clamp(20px, 5vw, 24px);
    }

    .notebook {
      /* The toolbar overhangs its cell by 21px, so keep a visible seam while
         rows animate in instead of letting it cover the previous cell. */
      --notebook-gap: clamp(24px, 6vw, 28px);
    }

    .cell-main {
      padding: clamp(9px, 2vw, 14px) clamp(10px, 2.5vw, 18px);
    }

    .cell-code {
      font-size: clamp(10.5px, 2.6vw, 13.5px);
      overflow-x: visible;
    }

    .line {
      white-space: pre-wrap;
      overflow-wrap: anywhere;
      word-break: break-word;
    }

    .cell-output-row {
      padding: clamp(9px, 2vw, 12px) clamp(10px, 2.5vw, 18px);
    }

    .cell-output pre {
      min-width: 0;
      font-size: clamp(10.5px, 2.6vw, 13px);
      overflow-wrap: anywhere;
    }

    .chat.open {
      padding: clamp(12px, 2.5vw, 18px) clamp(12px, 3vw, 20px);
    }

    .chat-user-text,
    .chat-ai-text,
    .chat-actions button {
      font-size: clamp(11px, 2.8vw, 14.5px);
    }

    .chat-input-text {
      font-size: clamp(11px, 2.8vw, 15px);
    }

    .chat-actions {
      flex-wrap: wrap;
      gap: 4px;
    }

    .chat-actions button {
      padding: 5px 8px;
    }
  }

  @media (max-width: 25rem) {
    .chat-input-row .model {
      display: none;
    }

    .toolbar {
      right: 8px;
    }

    .toolbar button {
      padding-inline: 5px;
    }

    .out-dots {
      display: none;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    .cell, .cell-code, .line .hl, .tok-kw, .tok-com, .tok-str, .tok-prm,
    .toolbar, .toolbar button, .chat, .chat-msg, .chat-user-text,
    .chat-spark, .chat-ai-text, .chat-ai-text a, .chat-actions,
    .chat-actions button, .chat-input, .chat-input-text,
    .chat-input-text .placeholder, .chat-input-row .msym,
    .chat-input-row .model, .mouse path,
    .run-btn, .run-btn .msym, .run-btn .run-spinner,
    .gutter .brackets, .cell-output-row, .out-dots, .cell-output pre {
      transition-duration: 0s !important;
    }
  }