:root {
  --page-bg-start: #e9f3ff;
  --page-bg-end: #ffffff;
  --card-border: #dbe7f7;
  --card-shadow: rgba(15, 23, 42, 0.12);
  --brand-primary: #0a66c2;
  --brand-secondary: #0f8acb;
  --text-main: #1f2937;
  --text-soft: #64748b;
  --field-border: #cbd5e1;
  --success: #0f766e;
  --error: #b91c1c;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(10, 102, 194, 0.12), transparent 32%),
    linear-gradient(135deg, var(--page-bg-start) 0%, #f8fbff 52%, var(--page-bg-end) 100%);
  color: var(--text-main);
}

.register-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.register-shell {
  width: 100%;
  max-width: 980px;
  display: grid;
  grid-template-columns: minmax(260px, 0.95fr) minmax(320px, 1.15fr);
  background: #ffffff;
  border: 1px solid var(--card-border);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 18px 42px var(--card-shadow);
}

.brand-panel {
  padding: 40px 34px;
  background: linear-gradient(160deg, var(--brand-primary) 0%, var(--brand-secondary) 100%);
  color: #ffffff;
}

.logo {
  width: 118px;
  height: auto;
  display: block;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.86);
}

.brand-panel h1 {
  margin: 0;
  font-size: clamp(2rem, 3vw, 2.5rem);
  line-height: 1.08;
}

.form-panel {
  padding: 34px;
}

.form-heading h2 {
  margin: 0;
  font-size: 1.7rem;
}

.form-heading p {
  margin: 8px 0 24px;
  color: var(--text-soft);
}

form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.full-width {
  grid-column: 1 / -1;
}

label {
  font-size: 0.92rem;
  font-weight: 600;
}

input {
  width: 100%;
  border: 1px solid var(--field-border);
  border-radius: 10px;
  padding: 11px 13px;
  font-size: 0.95rem;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

input:focus {
  outline: none;
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(10, 102, 194, 0.12);
}

.helper-text {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-soft);
}

button {
  margin-top: 4px;
  border: none;
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 0.98rem;
  font-weight: 700;
  color: #ffffff;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-secondary));
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease, opacity 0.16s ease;
}

button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(10, 102, 194, 0.2);
}

button:disabled {
  opacity: 0.72;
  cursor: not-allowed;
}

.message {
  min-height: 24px;
  margin: 18px 0 0;
  font-size: 0.92rem;
}

.message.success {
  color: var(--success);
}

.message.error {
  color: var(--error);
}

.login-link {
  margin: 10px 0 0;
  font-size: 0.92rem;
  color: var(--text-soft);
}

.login-link a {
  color: var(--brand-primary);
  text-decoration: none;
  font-weight: 700;
}

.login-link a:hover {
  text-decoration: underline;
}

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

  .brand-panel,
  .form-panel {
    padding: 28px 22px;
  }
}

@media (max-width: 640px) {
  form {
    grid-template-columns: 1fr;
  }
}