:root {
  --peri-50: #f4f5ff;
  --peri-100: #e8eaff;
  --peri-200: #d2d6ff;
  --peri-300: #b4b9f5;
  --peri-400: #8f95e8;
  --peri-500: #6f76d8;
  --peri-600: #585fc0;
  --peri-700: #484ea0;
  --peri-800: #3c4180;
  --peri-900: #34396a;
  --ink: #1f2340;
  --muted: #5c628a;
  --card: rgba(255, 255, 255, 0.82);
  --line: rgba(111, 118, 216, 0.18);
  --shadow: 0 18px 50px rgba(72, 78, 160, 0.16);
}

.login-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #dfe3ff 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #cfd5ff 0%, transparent 50%),
    linear-gradient(160deg, var(--peri-50), #eef0fb 45%, #e7e9f8);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.login-card {
  width: 100%;
  max-width: 380px;
  padding: 36px 32px 28px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
}

.login-brand {
  text-align: center;
  margin-bottom: 28px;
}

.login-mark {
  width: 52px;
  height: 52px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(145deg, var(--peri-400), var(--peri-600));
  color: white;
  font-weight: 700;
  font-size: 1.25rem;
  box-shadow: 0 10px 24px rgba(88, 95, 192, 0.35);
}

.login-brand h1 {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.login-brand p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.login-flash {
  margin-bottom: 16px;
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 0.9rem;
}

.login-flash--alert {
  background: #fff1f2;
  color: #9f1239;
  border: 1px solid #fecdd3;
}

.login-flash--notice {
  background: var(--peri-100);
  color: var(--peri-800);
  border: 1px solid var(--peri-200);
}

.login-sso-btn {
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  border: 0;
  border-radius: 14px;
  background: linear-gradient(145deg, var(--peri-500), var(--peri-700));
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(88, 95, 192, 0.28);
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
}

.login-sso-btn:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
  box-shadow: 0 16px 28px rgba(88, 95, 192, 0.34);
}

.login-sso-btn:active {
  transform: translateY(0);
}

.login-sso-btn__icon {
  display: inline-flex;
}

.login-footer {
  margin: 18px 0 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.82rem;
}

/* optional password form */
.login-divider {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  margin: 22px 0;
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.login-divider::before,
.login-divider::after {
  content: "";
  height: 1px;
  background: var(--line);
}

.login-form .field {
  margin-bottom: 14px;
}

.login-form label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.88rem;
  color: var(--peri-800);
  font-weight: 600;
}

.login-form input[type="email"],
.login-form input[type="password"] {
  width: 100%;
  box-sizing: border-box;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
  outline: none;
}

.login-form input:focus {
  border-color: var(--peri-400);
  box-shadow: 0 0 0 4px rgba(143, 149, 232, 0.2);
}

.field--inline {
  display: flex;
  align-items: center;
  gap: 8px;
}

.field--inline label {
  margin: 0;
  font-weight: 500;
  color: var(--muted);
}

.login-submit {
  width: 100%;
  min-height: 44px;
  margin-top: 4px;
  border: 1px solid var(--peri-300);
  border-radius: 12px;
  background: var(--peri-100);
  color: var(--peri-800);
  font-weight: 600;
  cursor: pointer;
}

.login-submit:hover {
  background: var(--peri-200);
}