:root {
  --ink: #1b1f3b;
  --ink-soft: #4c5270;
  --brand-c: #2563eb;
  --brand-a: #0d9488;
  --panel: rgba(255, 255, 255, 0.94);
  --line: #dbe4f0;
  --danger: #b91c1c;
  --ok: #166534;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Sora", sans-serif;
  color: var(--ink);
  min-height: 100vh;
  background:
    radial-gradient(circle at 8% 12%, rgba(37, 99, 235, 0.2), transparent 24%),
    radial-gradient(circle at 92% 9%, rgba(13, 148, 136, 0.2), transparent 25%),
    linear-gradient(135deg, #f8fbff 0%, #eef7ff 50%, #f2fcfb 100%);
  display: grid;
  place-items: center;
  padding: 1.1rem;
}

.shell {
  width: min(860px, 95vw);
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-radius: 1.2rem;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 22px 42px rgba(30, 41, 59, 0.12);
}

.intro {
  padding: 1.8rem;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.94), rgba(13, 148, 136, 0.92));
  color: #fff;
}

.intro h1 {
  margin: 0;
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  line-height: 1.2;
}

.intro p {
  margin-top: 0.85rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
  font-size: 0.93rem;
}

.form-wrap {
  padding: 1.5rem;
}

.topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  margin-bottom: 1rem;
}

.topline a {
  text-decoration: none;
  color: #1d4ed8;
  font-weight: 600;
}

.title {
  margin: 0;
  font-size: 1.18rem;
}

.subtitle {
  margin: 0.35rem 0 1rem;
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.form-grid {
  display: grid;
  gap: 0.85rem;
}

label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: #334155;
}

.field {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 0.72rem;
  padding: 0.7rem 0.82rem;
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field:focus {
  border-color: #60a5fa;
  box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.24);
}

.btn {
  border: none;
  border-radius: 0.8rem;
  padding: 0.78rem 0.95rem;
  font-family: inherit;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  background: linear-gradient(120deg, var(--brand-c), #1d4ed8);
  box-shadow: 0 12px 22px rgba(37, 99, 235, 0.24);
}

.alert {
  margin-top: 0.5rem;
  border-radius: 0.65rem;
  padding: 0.6rem 0.72rem;
  font-size: 0.82rem;
  display: none;
}

.alert.error {
  display: block;
  background: #fef2f2;
  border: 1px solid #fecaca;
  color: var(--danger);
}

.alert.success {
  display: block;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: var(--ok);
}

@media (max-width: 860px) {
  .shell {
    grid-template-columns: 1fr;
  }

  .intro,
  .form-wrap {
    padding: 1.25rem;
  }
}