/* styles.css */
:root {
  --bg: #0f172a;
  --panel: #111827;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --primary: #2563eb;
  --primary-600: #1d4ed8;
  --danger: #ef4444;
  --success: #22c55e;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: radial-gradient(1200px 800px at 10% -10%, #0b1220 0%, var(--bg) 50%, #0b1220 100%);
  color: var(--text);
}

.container {
  max-width: 720px;
  margin: 48px auto;
  padding: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}

h1 { margin: 0 0 16px; font-size: 1.6rem; }
h2 { margin: 24px 0 12px; font-size: 1.2rem; color: var(--muted); font-weight: 600; }

form { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: end; }
label { grid-column: 1 / -1; color: var(--muted); font-size: 0.95rem; }

input[type="text"] {
  padding: 12px 14px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  background: rgba(255,255,255,0.03);
  color: var(--text);
  outline: none;
}
input[type="text"]::placeholder { color: #94a3b880; }
input[type="text"]:focus { border-color: rgba(59,130,246,0.6); box-shadow: 0 0 0 3px rgba(59,130,246,0.2); }

button {
  padding: 12px 16px;
  border: none;
  border-radius: 10px;
  background: linear-gradient(180deg, var(--primary), var(--primary-600));
  color: white;
  font-weight: 600;
  cursor: pointer;
}
button:disabled { opacity: 0.6; cursor: not-allowed; }

.output {
  background: #0b1220;
  padding: 16px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.06);
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
  min-height: 140px;
}

.msg-error { color: var(--danger); }
.msg-ok { color: var(--success); }

.help {
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}