:root {
  --bg: #0d1117;
  --surface: #161b22;
  --border: #30363d;
  --text: #c9d1d9;
  --text-muted: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --success: #3fb950;
  --warning: #d29922;
  --error: #f85149;
  --radius: 8px;
  --font-mono: ui-monospace, 'Cascadia Code', 'Source Code Pro', monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  padding: 2rem;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}

header h1 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 600;
  color: #fff;
}

header p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 0.5rem;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

#controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

button {
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.6rem 1.4rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s, opacity 0.2s;
}

#scanBtn {
  background: var(--accent);
  color: #0d1117;
}

#scanBtn:hover:not(:disabled) {
  background: var(--accent-hover);
}

#copyBtn {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border);
}

#copyBtn:hover:not(:disabled) {
  border-color: var(--accent);
}

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

#status {
  width: 100%;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

#status.success { color: var(--success); }
#status.error { color: var(--error); }
#status.loading { color: var(--warning); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.card h2 {
  font-size: 1.1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.hidden {
  display: none;
}

.data-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
}

.data-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.4rem 0.6rem;
  border-radius: 4px;
  font-size: 0.85rem;
  background: rgba(255, 255, 255, 0.02);
}

.data-row:nth-child(even) {
  background: rgba(255, 255, 255, 0.04);
}

.data-key {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 500;
  min-width: 180px;
  flex-shrink: 0;
}

.data-value {
  color: var(--text);
  word-break: break-all;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.data-value.hash {
  color: var(--warning);
}

#raw-json {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--bg);
  padding: 1rem;
  border-radius: 6px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
  max-height: 400px;
  overflow-y: auto;
}

/* Selectores modernos */
.card:has(#webgl-data:empty) {
  display: none;
}

@media (min-width: 768px) {
  .data-grid {
    grid-template-columns: repeat(auto-fill, minmax(450px, 1fr));
  }
}