:root {
      --bg: #2b2b2b;
      --panel: #333842;
      --line: #454b56;
      --text: #e6e6e6;
      --muted: #9aa0a6;
      --accent: #8ab4f8;
      --hover: #1f6feb;
      --link: #c5d1ff;
      --code-green: #98c379;
      --code-purple: #c678dd;
      --code-yellow: #e5c07b;
    }

    * { box-sizing: border-box; }
    html, body {
      height: 100%;
      margin: 0;
      background: var(--bg);
      color: var(--text);
      font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, "Courier New", monospace;
    }

    .container {
      max-width: 820px;
      margin: 48px auto;
      padding: 24px;
      background: linear-gradient(180deg, #2e3440 0%, var(--panel) 100%);
      border: 1px solid var(--line);
      border-radius: 10px;
      box-shadow: 0 10px 24px rgba(0,0,0,0.35);
    }

    .title {
      display: flex;
      align-items: center;
      gap: 12px;
      margin: 0 0 16px;
      font-weight: 600;
      letter-spacing: 0.2px;
    }

    .status {
      font-size: 12px;
      color: var(--muted);
    }

    .toolbar {
      display: flex;
      gap: 8px;
      margin-bottom: 16px;
    }

    .btn {
      border: 1px solid var(--line);
      background: #262a33;
      color: var(--text);
      padding: 6px 10px;
      font-size: 13px;
      border-radius: 6px;
      cursor: pointer;
      transition: border-color 120ms ease, color 120ms ease, transform 80ms ease;
    }
    .btn:hover { border-color: var(--accent); color: var(--accent); }
    .btn:active { transform: translateY(1px); }

    /* File tree */
    .tree {
      list-style: none;
      margin: 0;
      padding: 6px 0 0 0;
      border-top: 1px dashed var(--line);
    }

    .node {
      display: grid;
      grid-template-columns: 22px 1fr;
      align-items: start;
      column-gap: 10px;
      padding: 6px 0;
    }

    .icon {
      width: 22px;
      height: 22px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--muted);
      user-select: none;
    }

    .entry {
      display: inline-flex;
      align-items: baseline;
      gap: 8px;
      text-decoration: none;
      color: var(--link);
      padding: 2px 4px;
      border-radius: 4px;
      transition: background 120ms ease, color 120ms ease;
    }
    .entry:hover {
      background: rgba(138, 180, 248, 0.08);
      color: var(--hover);
    }

    /* Preparing status styling */
    .entry.preparing {
      opacity: 0.6;
      cursor: not-allowed;
      pointer-events: none;
    }
    .entry.preparing:hover {
      background: transparent;
      color: var(--link);
    }

    /* Status badge */
    .status-badge {
      display: inline-block;
      padding: 2px 8px;
      margin-left: 8px;
      font-size: 11px;
      background: #ffa500;
      color: white;
      border-radius: 4px;
      font-weight: normal;
    }

    .meta {
      color: var(--muted);
      font-size: 12px;
    }

    /* Indentation lines (programmer vibe) */
    .children {
      margin-left: 16px;
      padding-left: 12px;
      border-left: 1px dashed var(--line);
    }

    /* Code-themed tags */
    .tag {
      font-size: 12px;
      padding: 0 6px;
      border-radius: 12px;
      border: 1px solid var(--line);
      color: var(--code-yellow);
      background: #2a2f38;
    }
    .tag.green { color: var(--code-green); }
    .tag.purple { color: var(--code-purple); }

    /* Footer */
    .footer {
      margin-top: 18px;
      border-top: 1px dashed var(--line);
      padding-top: 12px;
      font-size: 12px;
      color: var(--muted);
    }
    .last-updated {
      position: fixed;
      right: 12px;
      bottom: 12px;
      font-size: 12px;
      color: #94a3b8;
      background: rgba(0, 0, 0, 0.3);
      padding: 4px 8px;
      border-radius: 6px;
      user-select: none;
      pointer-events: none;
      z-index: 2;
    }