:root {
    --bg: #0d0d0f;
    --surface: #16161a;
    --border: #2a2a35;
    --accent: #7cffd4;
    --accent2: #ff6b6b;
    --accent3: #ffd166;
    --text: #e8e8f0;
    --muted: #6b6b80;
    --code-bg: #1e1e2a;
    --aside-bg: #111118;
  }

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

  body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Syne', sans-serif;
    min-height: 100vh;
    padding: 40px 20px 80px;
  }

  /* Grain overlay */
  body::before {
    content: '';
    position: fixed; inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 0;
    opacity: 0.5;
  }

  .wrapper { position: relative; z-index: 1; max-width: 1200px; margin: 0 auto; }

  header {
    text-align: center;
    margin-bottom: 48px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
  }

  .header-tag {
    font-family: 'Space Mono', monospace;
    font-size: 11px;
    letter-spacing: 4px;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 12px;
    display: block;
  }

  header h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: var(--text);
    line-height: 1.1;
  }

  header h1 span {
    color: var(--accent);
  }

  header p {
    color: var(--muted);
    margin-top: 12px;
    font-size: 15px;
    font-weight: 400;
  }

  /* TABLE */
  .table-wrap {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border);
  }

  table {
    width: 100%;
    border-collapse: collapse;
  }

  thead tr {
    background: var(--surface);
    border-bottom: 2px solid var(--accent);
  }

  thead th {
    padding: 14px 18px;
    text-align: left;
    font-family: 'Space Mono', monospace;
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent);
    white-space: nowrap;
  }

  thead th:first-child { width: 52px; text-align: center; }
  thead th:nth-child(2) { width: 200px; }
  thead th:nth-child(3) { width: 220px; }
  thead th:last-child { width: 340px; }

  tbody tr {
    border-bottom: 1px solid var(--border);
    transition: background 0.2s;
  }

  tbody tr:last-child { border-bottom: none; }
  tbody tr:hover { background: rgba(124,255,212,0.03); }

  td {
    padding: 18px;
    vertical-align: top;
    font-size: 14px;
  }

  td:first-child {
    text-align: center;
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: 13px;
    color: var(--muted);
    padding-top: 22px;
  }

  .badge {
    display: inline-block;
    background: var(--border);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 2px 8px;
    font-family: 'Space Mono', monospace;
    font-size: 10px;
    color: var(--accent3);
    margin-bottom: 6px;
  }

  .desc-title {
    font-weight: 600;
    font-size: 14px;
    color: var(--text);
    line-height: 1.4;
  }

  /* CODE BUTTON */
  .btn-run {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 14px;
    cursor: pointer;
    width: 100%;
    transition: border-color 0.2s, background 0.2s;
    font-family: 'Space Mono', monospace;
  }

  .btn-run:hover {
    border-color: var(--accent);
    background: rgba(124,255,212,0.07);
  }

  .btn-run:hover .run-icon { color: var(--accent); }

  .run-icon {
    color: var(--muted);
    font-size: 14px;
    transition: color 0.2s;
    flex-shrink: 0;
  }

  .code-text {
    font-size: 11.5px;
    color: #a8d8b9;
    text-align: left;
    white-space: pre;
    line-height: 1.6;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* ASIDE DEMO */
  .demo-aside {
    background: var(--aside-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    min-height: 70px;
    position: relative;
  }

  .demo-aside-label {
    font-family: 'Space Mono', monospace;
    font-size: 9px;
    letter-spacing: 2px;
    color: var(--muted);
    text-transform: uppercase;
    margin-bottom: 10px;
    display: block;
  }

  .demo-area {
    min-height: 44px;
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
  }

  /* DEMO ELEMENTS */
  .demo-box {
    width: 44px; height: 44px;
    background: var(--accent);
    border-radius: 6px;
    display: inline-block;
  }

  .demo-box2 {
    width: 44px; height: 44px;
    background: var(--accent2);
    border-radius: 6px;
    display: inline-block;
  }

  .demo-box3 {
    width: 44px; height: 44px;
    background: var(--accent3);
    border-radius: 6px;
    display: inline-block;
  }

  .demo-text {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
  }

  .demo-list li { font-size: 13px; color: var(--muted); margin-left: 16px; list-style: disc; }

  .demo-input {
    background: var(--code-bg);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 6px 10px;
    border-radius: 6px;
    font-family: 'Space Mono', monospace;
    font-size: 12px;
    width: 120px;
  }

  .demo-btn {
    background: var(--border);
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-family: 'Syne', sans-serif;
    font-size: 12px;
    font-weight: 600;
  }

  .demo-btn:hover { background: rgba(124,255,212,0.1); }

  .demo-counter {
    font-family: 'Space Mono', monospace;
    font-size: 24px;
    font-weight: 700;
    color: var(--accent3);
  }

  .demo-img-placeholder {
    width: 60px; height: 60px;
    background: linear-gradient(135deg, #2a2a40, #3a3a55);
    border-radius: 8px;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
  }

  .demo-progress {
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
  }

  .demo-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent), #06d6a0);
    border-radius: 4px;
    transition: width 0.6s ease;
  }

  .demo-tag {
    background: rgba(124,255,212,0.1);
    border: 1px solid rgba(124,255,212,0.3);
    color: var(--accent);
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-family: 'Space Mono', monospace;
  }

  .demo-tooltip-wrap { position: relative; display: inline-block; }
  .demo-tooltip {
    position: absolute;
    bottom: 110%;
    left: 50%;
    transform: translateX(-50%);
    background: #2a2a40;
    border: 1px solid var(--border);
    color: var(--text);
    padding: 4px 8px;
    border-radius: 5px;
    font-size: 11px;
    white-space: nowrap;
    display: none;
    font-family: 'Space Mono', monospace;
  }

  .status-ok  { color: var(--accent);  font-family: 'Space Mono', monospace; font-size: 12px; }
  .status-err { color: var(--accent2); font-family: 'Space Mono', monospace; font-size: 12px; }

  /* Reset button */
  .btn-reset {
    display: inline-block;
    margin-top: 40px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--muted);
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-family: 'Space Mono', monospace;
    font-size: 11px;
    letter-spacing: 1px;
    transition: border-color 0.2s, color 0.2s;
  }

  .btn-reset:hover { border-color: var(--accent2); color: var(--accent2); }

  footer {
    text-align: center;
    margin-top: 48px;
    color: var(--muted);
    font-family: 'Space Mono', monospace;
    font-size: 11px;
    letter-spacing: 1px;
  }