html,
body {
  height: 100%;
  margin: 0;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1.5rem;
  background-color: #1e3a5f;
  background-image: linear-gradient(135deg, #1e3a5f 0%, #3b82f6 50%, #2563eb 100%);
}

.signin-wrapper {
  width: 100%;
  max-width: 440px;
}

.signin-card {
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  padding: 2.5rem 2.25rem;
}

.signin-brand {
  text-align: center;
  margin-bottom: 2rem;
}

.signin-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  box-shadow: 0 8px 20px rgba(59, 130, 246, 0.35);
  margin-bottom: 1rem;
}
.signin-logo i {
  font-size: 1.75rem;
  color: #ffffff;
}

.signin-title {
  font-size: 1.625rem;
  font-weight: 700;
  color: #1a202c;
  letter-spacing: -0.5px;
  margin: 0 0 0.375rem;
}

.signin-subtitle {
  font-size: 0.9rem;
  color: #718096;
  margin: 0;
}

.sso-buttons {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.btn-sso {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.75rem 1.25rem;
  border-radius: 10px;
  border: 2px solid #e2e8f0;
  background: #ffffff;
  color: #2d3748;
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.25s ease;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}
.btn-sso:hover {
  border-color: #cbd5e0;
  background: #f7fafc;
  color: #1a202c;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transform: translateY(-1px);
  text-decoration: none;
}
.btn-sso:active {
  transform: translateY(0);
}

.sso-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.signin-divider {
  position: relative;
  text-align: center;
  margin: 1.5rem 0;
}
.signin-divider::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: #e2e8f0;
}
.signin-divider span {
  position: relative;
  background: #ffffff;
  padding: 0 0.875rem;
  font-size: 0.8125rem;
  color: #a0aec0;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.input-group-text {
  background: #f7fafc;
  border: 2px solid #e2e8f0;
  border-right: none;
  border-radius: 8px 0 0 8px !important;
  padding: 0.625rem 0.875rem;
  color: #a0aec0;
}

.input-group .form-control {
  border-left: none;
  border-radius: 0 8px 8px 0 !important;
}
.input-group .form-control:focus {
  border-color: #3b82f6;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}
.input-group .form-control:focus + .input-group-text,
.input-group .form-control:focus ~ .input-group-text {
  border-color: #3b82f6;
}

.input-group:focus-within .input-group-text {
  border-color: #3b82f6;
}

.btn-signin {
  padding: 0.8125rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 10px;
  letter-spacing: 0.25px;
}