:root {
  --bg: #0f172a;
  --panel: #020617;
  --accent: #38bdf8;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --danger: #ef4444;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(180deg, #020617, #0f172a);
  color: var(--text);
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

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

h1 {
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--muted);
  font-size: 1.05rem;
}

.dropzone {
  border: 2px dashed var(--accent);
  border-radius: 14px;
  padding: 2.5rem;
  text-align: center;
  background: rgba(56, 189, 248, 0.05);
  cursor: pointer;
}

.dropzone.dragover {
  background: rgba(56, 189, 248, 0.15);
}

.dropzone p {
  margin: 0.5rem 0;
}

.file-button {
  display: inline-block;
  margin-top: 0.8rem;
  padding: 0.6rem 1.2rem;
  background: var(--accent);
  color: #020617;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
}

.hint {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.file-info {
  margin-top: 2rem;
  background: var(--panel);
  padding: 1.5rem;
  border-radius: 12px;
}

.file-info ul {
  list-style: none;
  padding: 0;
}

.file-info li {
  margin-bottom: 0.4rem;
}

button {
  margin-top: 1rem;
  padding: 0.7rem 1.4rem;
  border-radius: 10px;
  border: none;
  background: #334155;
  color: var(--muted);
  cursor: not-allowed;
}

button.enabled {
  background: var(--accent);
  color: #020617;
  cursor: pointer;
}

.trust {
  margin-top: 3rem;
}

.trust ul {
  list-style: none;
  padding-left: 0;
}

.trust li {
  margin-bottom: 0.5rem;
}

footer {
  margin-top: 4rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
}

.hidden {
  display: none;
}