/* Cyberpunk Authentication & Registration Modal Styles */
.auth-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(2, 4, 8, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.auth-modal-overlay.active {
  display: flex;
}

.auth-modal-card {
  width: 100%;
  max-width: 440px;
  background: linear-gradient(160deg, rgba(14, 21, 38, 0.98) 0%, rgba(6, 9, 18, 0.99) 100%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.2rem);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.9), 0 0 35px rgba(255, 85, 0, 0.2);
  position: relative;
}

.auth-close-btn {
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  transition: var(--transition-fast);
}

.auth-close-btn:hover {
  color: #fff;
}

.auth-tabs-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  background: rgba(0, 0, 0, 0.4);
  padding: 0.35rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}

.auth-tab-btn {
  padding: 0.6rem;
  border: none;
  background: none;
  color: var(--text-dim);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.auth-tab-btn.active {
  background: var(--grad-flame);
  color: #fff;
  box-shadow: var(--glow-flame);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.9rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-input:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
}

.google-auth-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background: #ffffff;
  color: #1f2937;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(255, 255, 255, 0.15);
  transition: var(--transition-fast);
}

.google-auth-btn:hover {
  filter: brightness(1.05);
  transform: translateY(-2px);
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-dim);
  font-size: 0.75rem;
  text-transform: uppercase;
  margin: 0.5rem 0;
}

.auth-divider::before, .auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
}