/* auth.css */
.auth-layout {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top right, var(--primary) 0%, transparent 40%),
              radial-gradient(circle at bottom left, var(--secondary) 0%, transparent 40%),
              var(--bg-base);
  z-index: var(--z-modal);
  padding: var(--space-4);
  overflow-y: auto;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-lg);
  animation: slideUpFade 0.4s ease-out;
}

@keyframes slideUpFade {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.auth-header {
  text-align: center;
  margin-bottom: var(--space-6);
}

.auth-logo {
  font-size: 3rem;
  margin-bottom: var(--space-2);
  display: inline-block;
}

.auth-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.auth-subtitle {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.auth-form .form-group {
  margin-bottom: var(--space-4);
}

.auth-options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-5);
  font-size: var(--text-sm);
}

.auth-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
}

.auth-link:hover {
  text-decoration: underline;
}

.auth-divider {
  display: flex;
  align-items: center;
  text-align: center;
  margin: var(--space-5) 0;
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--border-subtle);
}

.auth-divider::before { margin-right: .5em; }
.auth-divider::after { margin-left: .5em; }

.btn-social {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-base);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  margin-bottom: var(--space-3);
}

.btn-social:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

.btn-social svg {
  width: 20px;
  height: 20px;
}

.auth-footer {
  text-align: center;
  margin-top: var(--space-6);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.auth-hidden {
  display: none !important;
}