:root {
    --bg: #0a0c10;
    --surface: #12151c;
    --surface2: #1a1e28;
    --border: #2a2f3d;
    --accent: #00e5a0;
    --accent2: #0099ff;
    --danger: #ff4060;
    --text: #e8eaf0;
    --muted: #6b7280;
    --canvas-bg: #0f1117;
  }

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

  body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }

  /* ===== HEADER ===== */
  header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 24px rgba(0,229,160,0.05);
  }

  .header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
  }

  .logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: 14px;
    color: #000;
    letter-spacing: -1px;
  }

  .logo-text {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: -0.5px;
  }

  .logo-text span {
    color: var(--accent);
  }

  .header-tagline {
    font-size: 0.75rem;
    color: var(--muted);
    font-weight: 300;
    letter-spacing: 0.5px;
  }

  .header-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
  }

  .header-nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 400;
    transition: color 0.2s;
  }

  .header-nav a:hover { color: var(--text); }

  .header-cta {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #000 !important;
    font-weight: 600 !important;
    padding: 8px 18px;
    border-radius: 8px;
    font-size: 0.85rem !important;
    transition: opacity 0.2s !important;
  }
  .header-cta:hover { opacity: 0.85; }

  /* ===== MAIN ===== */
  main {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 24px 16px;
    gap: 16px;
  }

  /* ===== TOOLBAR ===== */
  .toolbar {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    width: 820px;
    max-width: 100%;
  }

  .toolbar-group {
    display: flex;
    align-items: center;
    gap: 6px;
    padding-right: 12px;
    border-right: 1px solid var(--border);
  }
  .toolbar-group:last-child { border-right: none; padding-right: 0; }

  .toolbar-label {
    font-size: 0.65rem;
    color: var(--muted);
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-family: 'Space Mono', monospace;
  }

  button {
    padding: 7px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 600;
    font-family: 'Outfit', sans-serif;
    background: var(--surface2);
    color: var(--muted);
    transition: all 0.15s;
    white-space: nowrap;
  }
  button:hover {
    border-color: var(--accent);
    color: var(--text);
    background: rgba(0,229,160,0.05);
  }
  button.activo {
    background: rgba(0,229,160,0.15);
    border-color: var(--accent);
    color: var(--accent);
  }
  button.danger {
    color: var(--danger);
    border-color: rgba(255,64,96,0.3);
  }
  button.danger:hover {
    background: rgba(255,64,96,0.1);
    border-color: var(--danger);
  }
  button.danger.activo {
    background: rgba(255,64,96,0.15);
    border-color: var(--danger);
    color: var(--danger);
  }

  .file-label {
    padding: 7px 14px;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.82rem;
    font-weight: 600;
    font-family: 'Outfit', sans-serif;
    background: var(--surface2);
    color: var(--muted);
    transition: all 0.15s;
    white-space: nowrap;
  }
  .file-label:hover {
    border-color: var(--accent2);
    color: var(--text);
  }
  input[type="file"] { display: none; }

  /* ===== CANVAS AREA ===== */
  .canvas-wrapper {
    position: relative;
    width: 820px;
    max-width: 100%;
  }

  canvas {
    background: var(--canvas-bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    width: 820px;
    max-width: 100%;
    cursor: crosshair;
    display: block;
    box-shadow: 0 8px 40px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.03);
  }

  #infoGrafo {
    position: absolute;
    bottom: 14px;
    left: 14px;
    color: var(--muted);
    background: rgba(10,12,16,0.85);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-family: 'Space Mono', monospace;
    border: 1px solid var(--border);
    backdrop-filter: blur(8px);
    display: none;
    pointer-events: none;
  }

  .canvas-status {
    position: absolute;
    top: 14px;
    left: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.7rem;
    font-family: 'Space Mono', monospace;
    color: var(--muted);
    background: rgba(10,12,16,0.85);
    padding: 5px 10px;
    border-radius: 6px;
    border: 1px solid var(--border);
    backdrop-filter: blur(8px);
    pointer-events: none;
  }

  .status-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent);
    animation: pulse 2s infinite;
  }

  @keyframes pulse {
    0%,100% { opacity: 1; }
    50% { opacity: 0.3; }
  }

  /* ===== IMAGE REF ===== */
  #imagenRef {
  width: 180px;
  height: 180px;
  object-fit: contain;
  border: 2px solid var(--accent);
  border-radius: 10px;
  cursor: move;
  display: block;
  box-shadow: 0 4px 20px rgba(0,229,160,0.2);
}

  /* ===== FOOTER ===== */
  footer {
    background: var(--surface);
    border-top: 1px solid var(--border);
    padding: 2.5rem 2rem 1.5rem;
  }

  .footer-inner {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 2rem;
  }

  .footer-brand .logo-text { font-size: 1.2rem; }

  .footer-desc {
    font-size: 0.82rem;
    color: var(--muted);
    line-height: 1.7;
    margin-top: 10px;
    font-weight: 300;
  }

  .footer-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 14px;
    padding: 5px 12px;
    background: rgba(0,229,160,0.08);
    border: 1px solid rgba(0,229,160,0.2);
    border-radius: 20px;
    font-size: 0.72rem;
    color: var(--accent);
    font-family: 'Space Mono', monospace;
  }

  .footer-col h4 {
    font-size: 0.7rem;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--muted);
    font-weight: 600;
    margin-bottom: 14px;
    font-family: 'Space Mono', monospace;
  }

  .footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .footer-col ul li a {
    color: var(--muted);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 300;
    transition: color 0.2s;
  }
  .footer-col ul li a:hover { color: var(--accent); }

  .footer-bottom {
    max-width: 900px;
    margin: 2rem auto 0;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--muted);
  }

  .footer-bottom span { font-family: 'Space Mono', monospace; }

  @media (max-width: 700px) {
    .footer-inner { grid-template-columns: 1fr; }
    .header-nav { display: none; }
    .toolbar { width: 100%; }
    canvas { width: 100%; }
    .canvas-wrapper { width: 100%; }
  }