:root {
  --bg: #0b1f3a;
  --ink: #111928;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #1d4ed8;
  --accent-ink: #ffffff;
  --radius: 12px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  font-family: 'Inter', system-ui, -apple-system, Arial, sans-serif;
  color: var(--ink);
  background: linear-gradient(160deg, #f5f7fb 0%, #eef2f9 100%);
}

.card {
  width: 100%;
  max-width: 520px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: 0 10px 40px rgba(11, 31, 58, 0.08);
}

h1 { margin: 0 0 4px; font-size: 24px; }
.sub { margin: 0 0 24px; color: var(--muted); }

label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 14px; }

input {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 11px 12px;
  font-size: 15px;
  font-weight: 400;
  border: 1px solid var(--line);
  border-radius: 8px;
}
input:focus { outline: 2px solid var(--accent); border-color: var(--accent); }

.row { display: flex; gap: 12px; }
.row label { flex: 1; }

fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 14px; margin: 4px 0 18px; }
legend { font-size: 14px; font-weight: 600; padding: 0 6px; }

.slot-list { display: flex; flex-wrap: wrap; gap: 8px; }
.slot {
  padding: 8px 12px;
  font-size: 13px;
  background: #f3f4f6;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
}
.slot:hover { border-color: var(--accent); }
.slot.active { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

button[type='submit'] {
  width: 100%;
  padding: 13px;
  font-size: 15px;
  font-weight: 600;
  color: var(--accent-ink);
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}
button[type='submit']:disabled { opacity: 0.5; cursor: not-allowed; }

.status { min-height: 20px; margin: 12px 0 0; font-size: 14px; }
.muted { color: var(--muted); font-size: 14px; }
.privacy { margin: 16px 0 0; font-size: 12px; line-height: 1.5; color: var(--muted); }
.privacy a { color: var(--accent); }