:root {
  --bg: #0b1020;
  --card: rgba(255, 255, 255, 0.06);
  --card2: rgba(255, 255, 255, 0.09);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.65);
  --border: rgba(255, 255, 255, 0.14);
  --primary: #5eead4;
  --danger: #fb7185;
  --ok: #34d399;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(1200px 600px at 20% 10%, rgba(94, 234, 212, 0.25), transparent 60%),
    radial-gradient(900px 500px at 90% 20%, rgba(99, 102, 241, 0.25), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, 'Apple Color Emoji',
    'Segoe UI Emoji';
}

.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 28px 16px 60px;
}

.wrap.narrow {
  max-width: 680px;
}

.hero {
  margin-bottom: 18px;
}

.hero h1 {
  margin: 0 0 6px;
  font-size: 40px;
  letter-spacing: -0.02em;
}

.sub {
  margin: 0;
  color: var(--muted);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  margin: 14px 0;
}

h2 {
  margin: 0 0 8px;
  font-size: 22px;
}

.muted {
  color: var(--muted);
}

label {
  display: block;
  margin: 10px 0;
  color: var(--muted);
  font-size: 14px;
}

input[type='email'],
input[type='text'],
input[type='number'],
input[type='file'] {
  width: 100%;
  margin-top: 8px;
  padding: 10px 12px;
  background: var(--card2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 12px;
}

.row {
  margin-top: 14px;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  margin-top: 8px;
}

input[type='checkbox'] {
  width: 20px;
  height: 20px;
  accent-color: var(--primary);
}

.btn {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  margin-top: 10px;
}

.btn.primary {
  background: rgba(94, 234, 212, 0.18);
  border-color: rgba(94, 234, 212, 0.45);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.alert {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin: 14px 0;
}

.alert.ok {
  border-color: rgba(52, 211, 153, 0.6);
  background: rgba(52, 211, 153, 0.12);
}

.alert.error {
  border-color: rgba(251, 113, 133, 0.65);
  background: rgba(251, 113, 133, 0.12);
}

.link {
  display: inline-block;
  margin-top: 12px;
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px dashed rgba(94, 234, 212, 0.55);
}

.result h3 {
  margin-top: 0;
}