* {
    box-sizing: border-box;
  }

  body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", system-ui, sans-serif;
    background: #0f172a;
    color: #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
  }

  .card {
    width: 100%;
    max-width: 520px;
    background: #1e293b;
    border: 1px solid #334155;
    border-radius: 16px;
    padding: 28px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
  }

  h1 {
    margin: 0 0 8px;
    font-size: 24px;
  }

  .muted {
    color: #94a3b8;
    margin: 0 0 24px;
  }

  .code-box {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    margin-bottom: 16px;
  }

  .label {
    color: #94a3b8;
    font-size: 14px;
    margin-bottom: 8px;
  }

  .code {
    font-size: 40px;
    letter-spacing: 8px;
    font-weight: 700;
    color: #38bdf8;
  }

  .row {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
  }

  input {
    flex: 1;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid #475569;
    background: #0f172a;
    color: #e2e8f0;
    font-size: 16px;
  }

  button {
    padding: 12px 18px;
    border: none;
    border-radius: 10px;
    background: #0ea5e9;
    color: white;
    font-size: 15px;
    cursor: pointer;
  }

  button:hover {
    background: #0284c7;
  }

  button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
  }

  .btn-ai {
    background: #8b5cf6;
  }

  .btn-ai:hover {
    background: #7c3aed;
  }

  .btn-ctrl {
    background: #64748b;
  }

  .btn-ctrl:hover {
    background: #475569;
  }

  .btn-danger {
    background: #ef4444;
  }

  .btn-danger:hover {
    background: #dc2626;
  }

  .btn-link {
    display: inline-block;
    padding: 12px 18px;
    border-radius: 10px;
    background: #0ea5e9;
    color: white;
    font-size: 15px;
    text-decoration: none;
    cursor: pointer;
  }

  .btn-link:hover {
    background: #0284c7;
  }

  .status {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 12px;
  }

  .hint {
    color: #64748b;
    font-size: 13px;
    margin: 0;
  }

  .download-area {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 12px;
  }

  .ai-area {
    margin-bottom: 16px;
  }

  .ai-status {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 10px;
    padding: 10px 14px;
    margin-bottom: 12px;
    color: #a5b4fc;
    font-size: 14px;
  }

  .ai-thinking {
    background: #0f172a;
    border: 1px solid #475569;
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 12px;
  }

  .ai-thinking-title {
    color: #94a3b8;
    font-size: 13px;
    margin-bottom: 8px;
  }

  .ai-thinking-text {
    margin: 0;
    font-family: "Cascadia Code", "Fira Code", Consolas, monospace;
    font-size: 13px;
    white-space: pre-wrap;
    word-break: break-all;
    color: #cbd5e1;
    max-height: 200px;
    overflow-y: auto;
  }

  .ai-chat-log {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 10px;
    padding: 10px 14px;
    margin-bottom: 12px;
    max-height: 200px;
    overflow-y: auto;
  }

  .ai-chat-msg {
    font-size: 13px;
    margin-bottom: 4px;
    line-height: 1.5;
  }

  .ai-chat-who {
    color: #8b5cf6;
    font-weight: 600;
  }

  .ai-chat-body {
    color: #cbd5e1;
  }

  .ai-tag {
    display: inline-block;
    background: #8b5cf6;
    color: white;
    font-size: 11px;
    padding: 1px 6px;
    border-radius: 4px;
    vertical-align: middle;
  }

  .output {
    margin-top: 16px;
    max-height: 300px;
    overflow-y: auto;
  }

  .output-cmd {
    color: #38bdf8;
    font-size: 13px;
    display: block;
    margin-bottom: 4px;
    margin-top: 10px;
  }

  .output-text {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 8px;
    padding: 10px 14px;
    margin: 0;
    font-family: "Cascadia Code", "Fira Code", Consolas, monospace;
    font-size: 13px;
    white-space: pre-wrap;
    word-break: break-all;
  }

  .section-title {
    color: #94a3b8;
    font-size: 14px;
    margin-bottom: 10px;
    margin-top: 16px;
  }

  .file-list {
    max-height: 200px;
    overflow-y: auto;
  }

  .file-entry {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 8px;
    padding: 8px 12px;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .file-name {
    flex: 1;
    font-size: 13px;
    color: #e2e8f0;
  }

  .file-from {
    font-size: 11px;
    color: #64748b;
    background: #1e293b;
    padding: 2px 6px;
    border-radius: 4px;
  }

  .file-push-btn {
    padding: 6px 12px;
    font-size: 13px;
  }

  .task-list {
    max-height: 200px;
    overflow-y: auto;
  }

  .task-info {
    background: #0f172a;
    border: 1px solid #334155;
    border-radius: 10px;
    padding: 10px 14px;
    margin-bottom: 12px;
    color: #a5b4fc;
    font-size: 14px;
  }

  .task-info-error {
    color: #f87171;
  }

  .prompt-area {
    background: #0f172a;
    border: 1px solid #8b5cf6;
    border-radius: 10px;
    padding: 12px 14px;
    margin-bottom: 12px;
  }

  .prompt-question {
    color: #cbd5e1;
    font-size: 14px;
    margin-bottom: 8px;
    line-height: 1.5;
  }