:root {
    --bg:               #ffffff;
    --text:             #1f1f1f;
    --text-muted:       #5f6368;
    --text-placeholder: #9aa0a6;
    --accent-purple:    #7f46ff;
    --accent-blue:      #3d90f9;
    --accent-green:     #0f9d58;
    --accent-green-bg:  rgba(15, 157, 88, 0.1);
    --border:           #e8eaed;
    --surface-hover:    #e4e6e8;
    --surface-btn:      #f1f3f4;
    --warn:             #f9ab00;
    --diff-del-bg:      #fdcccc;
    --diff-add-bg:      #c8ead8;
    --diff-del:         #dc2626;
    --diff-add:         #16a34a;
    --diff-gutter:      color-mix(in srgb, var(--text-muted) 38%, var(--bg));
    --demo-color-accent: var(--accent-blue);
    --suggestion-active-bg: color-mix(in srgb, var(--accent-purple) 16%, var(--bg));
    --demo-color-text: var(--text);
    --demo-color-control: var(--surface-btn);
    --demo-color-control-hover: var(--surface-hover);
    --demo-color-track: var(--surface-hover);
  }

  :root.dark {
    --bg:               #1f1f1f;
    --text:             #e8eaed;
    --text-muted:       #9aa0a6;
    --text-placeholder: #5f6368;
    --accent-purple:    #c58af9;
    --accent-blue:      #8ab4f8;
    --accent-green:     #81c995;
    --accent-green-bg:  rgba(129, 201, 149, 0.12);
    --border:           #3c4043;
    --surface-hover:    #4b4f52;
    --surface-btn:      #3c4043;
    --warn:             #fdd663;
    --diff-del-bg:      rgba(239, 68, 68, 0.12);
    --diff-add-bg:      rgba(34, 197, 94, 0.12);
    --diff-del:         #f87171;
    --diff-add:         #4ade80;
    --diff-gutter:      color-mix(in srgb, var(--text-muted) 45%, var(--bg));
    --suggestion-active-bg: color-mix(in srgb, var(--accent-purple) 24%, var(--bg));
  }

  .sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .input-token {
    color: var(--accent-purple);
    transition: color 0.3s ease;
  }

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

  body {
    background: var(--bg);
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-size: 13px;
    line-height: 120%;
    color: var(--text);
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
  }

  .cli-stage {
    position: relative;
    display: flex;
    flex: 1;
    min-width: 0;
    min-height: 0;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg);
    transition: background-color 0.3s ease;
  }

  body.is-card {
    --cli-card-bleed: clamp(10px, 3.5vh, 24px);
    padding: clamp(16px, 12vh, 96px) clamp(12px, 7.5vw, 112px) 0;
    background: transparent;
  }
  body.is-card .cli-stage {
    margin-bottom: calc(var(--cli-card-bleed) * -1);
    border-radius: var(--demo-radius-md);
    box-shadow: 0 12px 28px -8px rgb(35 28 102 / 0.38);
  }
  :root.dark body.is-card .cli-stage {
    box-shadow: 0 12px 28px -8px rgb(56 39 51 / 0.55);
  }
  body.is-card .bottom-bar {
    margin-bottom: calc(var(--cli-card-bleed) + 14px);
  }

  .scroll-area {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 28px 32px 12px;
    scrollbar-width: none;
  }
  .scroll-area::-webkit-scrollbar { display: none; }
  .scroll-area > * { overflow-anchor: none; }
  .scroll-end { overflow-anchor: auto; height: 0; }

  .cli-header {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 18px;
    user-select: none;
  }
  .cli-diamond { color: var(--accent-purple); flex: none; font-size: 24px; transition: color 0.3s ease; }
  .cli-name    { font-weight: 700; color: var(--text); transition: color 0.3s ease; }
  .cli-version { color: var(--text-muted); font-weight: 400; transition: color 0.3s ease; }

  .tips {
    color: var(--text);
    margin-bottom: 20px;
    transition: color 0.3s ease;
  }
  .tips .hl { color: var(--accent-purple); transition: color 0.3s ease; }

  .convo-area {
    margin-top: 24px;
  }

  .msg {
    display: grid;
    grid-template-rows: 0fr;
    opacity: 0;
    transform: translateY(6px);
    margin-bottom: 16px;
    transition: grid-template-rows 0.35s cubic-bezier(0.32, 0.72, 0, 1),
                opacity 0.28s ease 0.04s,
                transform 0.32s cubic-bezier(0.32, 0.72, 0, 1);
  }
  .msg.show {
    grid-template-rows: 1fr;
    opacity: 1;
    transform: translateY(0);
  }
  .msg-inner {
    min-height: 0;
    overflow: hidden;
    display: flex;
    align-items: flex-start;
    gap: 8px;
  }
  .msg-prefix  { flex: none; line-height: 120%; }
  .msg-content { flex: 1; min-width: 0; white-space: pre-wrap; word-break: break-word; }
  .msg-user .msg-prefix  { color: var(--text-muted); transition: color 0.3s ease; }
  .msg-user .msg-content { color: var(--text-muted); transition: color 0.3s ease; }
  .msg-ai .msg-prefix    { color: var(--accent-purple); transition: color 0.3s ease; font-size: 20px; line-height: 10px; }
  .msg-ai .bold          { font-weight: 700; }
  .msg-ai .hl            { color: var(--accent-purple); transition: color 0.3s ease; }

  .msg-reply { width: fit-content; }
  .msg-reply .msg-inner {
    background: var(--surface-btn);
    border-radius: 6px;
    padding: 4px 10px;
    transition: background 0.3s ease;
  }

  .tool-resolved-wrap {
    display: grid;
    grid-template-rows: 0fr;
    opacity: 0;
    transform: translateY(6px);
    margin-bottom: 16px;
    transition: grid-template-rows 0.35s cubic-bezier(0.32, 0.72, 0, 1),
                opacity 0.28s ease 0.04s,
                transform 0.32s cubic-bezier(0.32, 0.72, 0, 1);
  }
  .tool-resolved-wrap.show { grid-template-rows: 1fr; opacity: 1; transform: translateY(0); }
  .tool-resolved {
    min-height: 0;
    overflow: hidden;
    display: flex;
    align-items: baseline;
    gap: 6px;
    width: fit-content;
    max-width: 100%;
    font-size: 13px;
    transition: border-color 0.3s ease;
  }
  .tool-check      { color: var(--accent-green); font-weight: 700; flex: none; transition: color 0.3s ease; }
  .tool-resolved .tool-label    { flex: none; }
  .tool-resolved .tool-header-sub {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    color: var(--text-muted);
    font-size: 12.5px;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: color 0.3s ease;
  }

  .status-line {
    display: none;
    height: calc(1.65em + 8px);
    padding-top: 8px;
    font-size: 13px;
    color: var(--accent-purple);
    margin-bottom: 6px;
    overflow: hidden;
    white-space: nowrap;
    text-overflow: ellipsis;
    opacity: 0;
    transition: opacity 0.2s ease, color 0.3s ease;
  }
  .status-line.show { display: block; opacity: 1; }
  .spin-char { display: inline; }

  .tool-box {
    display: none;
    width: fit-content;
    border: 1.5px solid var(--border);
    border-radius: 8px;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.3s ease 0.07s,
                transform 0.38s cubic-bezier(0.32, 0.72, 0, 1),
                border-color 0.3s ease;
  }
  .tool-box.show {
    margin-bottom: 16px;
    display: grid;
    grid-template-rows: 1fr;
    opacity: 1;
    border-color: var(--border);
  }
  .tool-box-inner {
    min-width: 500px;
    min-height: 0;
    overflow: hidden;
    padding: 12px 20px 12px 16px;
  }

  body.is-card .tool-box {
    width: 100%;
    max-width: 100%;
  }
  body.is-card .tool-box-inner {
    width: 100%;
    min-width: 0;
  }
  body.is-card .tool-command,
  body.is-card .tool-question,
  body.is-card .tool-opt > span:last-child {
    overflow-wrap: anywhere;
  }
  .tool-header {
    display: flex;
    align-items: baseline;
    gap: 6px;
    padding-bottom: 8px;
    margin-bottom: 10px;
    font-size: 13px;
    overflow: hidden;
  }
  .tool-q     { color: var(--warn); font-weight: 700; flex: none; transition: color 0.3s ease; }
  .tool-label { font-weight: 700; flex: none; }
  .tool-header-sub {
    color: var(--text-muted);
    font-size: 12.5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    transition: color 0.3s ease;
  }
  .tool-body  { font-size: 13px; line-height: 1.75; }
  .tool-question { color: var(--text); margin-bottom: 8px; transition: color 0.3s ease; }
  .tool-opt       { display: flex; gap: 6px; border-radius: 4px; padding: 2px 6px; margin: -2px -6px; cursor: default; }
  .tool-opt-bullet { color: var(--accent-blue); flex: none; width: 14px; transition: color 0.3s ease; }
  .tool-opt-num   { color: var(--text-muted); transition: color 0.3s ease; }
  .tool-wait      { color: var(--text-muted); font-size: 12.5px; margin-top: 10px; transition: color 0.3s ease; }
  .tool-opt.selected {
    background: var(--accent-green-bg);
    color: var(--accent-green);
    transition: background 0.18s ease, color 0.18s ease;
  }
  .tool-opt.selected .tool-opt-bullet { color: var(--accent-green); transition: color 0.18s ease; }
  .tool-opt.selected .tool-opt-num    { color: var(--accent-green); transition: color 0.18s ease; }
  .tool-opt:not(.selected):hover {
    background: var(--surface-hover);
    transition: background 0.15s ease;
  }

  .tool-command { font-weight: 700; margin-bottom: 8px; color: var(--text); transition: color 0.3s ease; }

  body.awaiting-confirm .bottom-bar,
  body.awaiting-shell .bottom-bar { display: none; }
  body.awaiting-confirm .scroll-area,
  body.awaiting-shell .scroll-area { padding-bottom: 52px; }

  .diff-wrap {
    display: none;
    width: fit-content;
    max-width: 100%;
    opacity: 0;
    transform: translateY(8px);
    margin: 12px 0 10px;
    transition: opacity 0.3s ease 0.07s,
                transform 0.38s cubic-bezier(0.32, 0.72, 0, 1);
  }
  .diff-wrap.show  { display: block; opacity: 1; transform: translateY(0); }
  .diff-file {
    font-size: 12px;
    color: var(--text-muted);
    padding: 12px 0 4px;
    background: transparent;
    transition: background 0.3s ease, color 0.3s ease;
  }
  .diff-check { color: var(--accent-green); font-weight: 700; }
  .diff-file .tool-label { color: var(--text); transition: color 0.3s ease; }
  .diff-body {
    border-radius: 6px;
    overflow: hidden;
  }
  .diff-line {
    display: flex;
    align-items: baseline;
    padding: 0 20px 0 12px;
    font-size: 12px;
    line-height: 1.75;
    white-space: pre;
  }
  .diff-line-del { background: var(--diff-del-bg); }
  .diff-line-add { background: var(--diff-add-bg); }
  .diff-line-change-start {
    border-top-left-radius: 6px;
    border-top-right-radius: 6px;
  }
  .diff-line-change-end {
    border-bottom-right-radius: 6px;
    border-bottom-left-radius: 6px;
  }
  .diff-ln   { flex: none; width: 26px; text-align: right; padding-right: 10px; color: var(--diff-gutter); user-select: none; font-size: 11px; transition: color 0.3s ease; }
  .diff-sign { flex: none; width: 12px; margin-right: 8px; user-select: none; }
  .diff-line-del .diff-sign { color: var(--diff-del); }
  .diff-line-add .diff-sign { color: var(--diff-add); }
  .diff-line-ctx .diff-sign { color: transparent; }
  .diff-line-del .diff-ln,
  .diff-line-add .diff-ln { color: color-mix(in srgb, var(--text) 75%, var(--bg)); }
  .diff-code {
    color: var(--text);
    background: transparent;
    padding: 0;
    border-radius: 0;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    text-shadow: none;
    transition: color 0.3s ease;
  }

  .bottom-bar {
    flex: none;
    position: relative;
    background: var(--bg);
    padding: 0 32px 10px;
    margin-bottom: 44px;
    transition: background-color 0.3s ease;
  }
  .input-box.mode-plan {
    border-color: var(--accent-green);
  }
  .input-box.mode-plan .input-prompt {
    color: var(--accent-green);
  }
  .input-box.mode-auto {
    border-color: var(--warn);
  }
  .input-box.mode-auto .input-prompt {
    color: var(--warn);
  }
  .mode-line {
    display: none;
    margin-bottom: 6px;
    font-size: 13px;
  }
  .mode-line.show {
    display: block;
  }
  .mode-line.mode-plan {
    color: var(--accent-green);
  }
  .mode-line.mode-auto {
    color: var(--warn);
  }
  .mode-hint {
    color: var(--text-muted);
  }

  .suggestions {
    display: none;
    width: 100%;
    max-height: 13.5rem;
    margin-bottom: 8px;
    overflow: hidden;
    background: var(--bg);
    transition: background-color 0.3s ease;
  }
  .suggestions.show {
    display: block;
  }
  .suggestion-option {
    display: grid;
    grid-template-columns: minmax(8rem, 0.36fr) minmax(0, 1fr);
    gap: 18px;
    min-width: 0;
    padding: 3px 8px;
    border-radius: 4px;
    color: var(--text-muted);
    transition: color 0.18s ease, background-color 0.18s ease;
  }
  .suggestions[data-kind="file"] .suggestion-option {
    grid-template-columns: minmax(0, 1fr);
  }
  .suggestion-option.active {
    color: var(--accent-purple);
    background: var(--suggestion-active-bg);
  }
  .suggestion-label,
  .suggestion-description {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .input-box {
    border-block: 1.5px solid var(--accent-blue);
    padding: 10px 0;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
    transition: border-color 0.3s ease;
  }
  .input-prompt { color: var(--accent-purple); font-weight: 700; flex: none; transition: color 0.3s ease; }
  .input-text   { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; }
  .placeholder  { color: var(--text-placeholder); transition: color 0.3s ease; }

  .cursor {
    display: inline-block;
    width: 2px;
    height: 1.1em;
    background: var(--accent-blue);
    vertical-align: text-bottom;
    margin-left: 1px;
    animation: blink 0.9s steps(1) infinite;
    transition: background-color 0.3s ease;
  }
  .stream-cursor {
    display: inline-block;
    width: 2px;
    height: 1.1em;
    background: var(--accent-blue);
    vertical-align: text-bottom;
    margin-left: 1px;
    animation: blink 0.9s steps(1) infinite;
    transition: background-color 0.3s ease;
  }
  @keyframes blink { 50% { opacity: 0; } }

  .footer {
    font-size: 12.5px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
  }
  .footer-project { color: var(--text-muted); transition: color 0.3s ease; }
  .footer-status  { display: flex; }
  .footer-model { color: var(--accent-purple); transition: color 0.3s ease; }
  .footer-rest  { margin-left: 8px; color: var(--text-muted); transition: color 0.3s ease; }

  body.is-card .suggestions {
    max-height: 9.2rem;
  }

  @media (max-width: 40rem) {
    .scroll-area {
      padding: 18px 16px 8px;
    }

    .bottom-bar {
      padding-inline: 16px;
      margin-bottom: 24px;
    }

    .suggestion-option {
      grid-template-columns: minmax(6rem, 0.32fr) minmax(0, 1fr);
      gap: 10px;
    }

    body.is-card {
      font-size: clamp(10px, 3.4vw, 13px);
    }

    body.is-card .scroll-area {
      padding: clamp(14px, 5vw, 28px) clamp(12px, 5vw, 32px) 8px;
    }

    body.is-card .bottom-bar {
      padding-inline: clamp(12px, 5vw, 32px);
      margin-bottom: calc(var(--cli-card-bleed) + 10px);
    }

    body.is-card .tool-box-inner {
      padding: 10px 12px;
    }

    body.is-card .tool-body,
    body.is-card .tool-resolved,
    body.is-card .status-line {
      font-size: inherit;
    }

    body.is-card .footer {
      gap: 8px;
      font-size: clamp(9px, 3vw, 12.5px);
    }
  }

  @media (max-width: 33rem) {
    .tool-box {
      width: 100%;
      max-width: 100%;
    }

    .tool-box-inner {
      width: 100%;
      min-width: 0;
    }

    .tool-command,
    .tool-question,
    .tool-opt > span:last-child {
      overflow-wrap: anywhere;
    }
  }

  @media (prefers-reduced-motion: reduce) {
    .cursor {
      animation: none;
    }
  }