/* /css/register.css */
:root {
  --bg1: #c7f0ff;
  --bg2: #a5e7f0;
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e2e8f0;
  --error: #dc2626;
  --surface: #ffffff;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(135deg, var(--bg1), var(--bg2));
}

.container { max-width: 1100px; margin: 0 auto; padding: 0 16px; }

.site-header {
  backdrop-filter: blur(6px);
  background: rgba(255,255,255,0.6);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex; align-items: center; justify-content: space-between; height: 64px;
}
.logo { font-weight: 700; color: #5b21b6; font-size: 20px; }
.nav a {
  margin-left: 16px; text-decoration: none; color: var(--text); font-weight: 500;
}
.nav a[aria-current="page"] { color: var(--primary); }

.main { padding: 32px 16px; }
.card {
  max-width: 720px; margin: 0 auto; background: var(--surface);
  border: 1px solid var(--border); border-radius: 12px; padding: 24px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}
h1 { margin: 0 0 8px; font-size: 24px; }
.sub { color: var(--muted); margin: 0 0 20px; }

.grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.form-group { display: flex; flex-direction: column; }
.form-group label { font-weight: 600; margin-bottom: 8px; }
.form-group input {
  height: 44px; padding: 10px 12px; border: 1px solid var(--border);
  border-radius: 8px; outline: none; background: #fff;
}
.form-group input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,0.15); }
.hint { color: var(--muted); font-size: 13px; margin-top: 6px; }
progress { width: 100%; height: 8px; margin-top: 8px; accent-color: var(--primary); }

.error {
  color: var(--error); font-size: 13px; margin-top: 6px; min-height: 18px;
}
.server-error {
  color: var(--error); margin-top: 12px; min-height: 20px;
}
.form-check {
  display: flex; align-items: center; gap: 8px; margin: 10px 0 18px;
}
.btn-primary {
  height: 44px; padding: 0 16px; border: none; border-radius: 8px;
  background: var(--primary); color: #fff; font-weight: 600; cursor: pointer;
}
.btn-primary:hover { background: var(--primary-dark); }
.switch { margin-top: 18px; color: var(--muted); }
.switch a { color: var(--primary); text-decoration: none; }

.footer { margin: 24px 0; text-align: center; color: var(--muted); }

@media (max-width: 720px) {
  .grid { grid-template-columns: 1fr; }
}