/* ========================================
   DANCE STUDIO — Premium Auth Styles
   ======================================== */

.auth-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  background: transparent;
}

/* Floating Topbar (Perfectly Aligned Nav) */
.auth-topbar {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: var(--space-4) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 10;
}

.auth-back-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: white; /* Contrast against background */
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
  transition: all var(--transition-fast);
}

.auth-back-btn:hover {
  background: rgba(var(--color-primary-rgb), 0.2);
  border-color: var(--color-primary);
  color: white;
}

.auth-toggles {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
  border: 1px solid var(--glass-border);
}

/* Auth Container (Centered Card View) */
.auth-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8) var(--space-4);
  position: relative;
  z-index: 5;
}

.auth-glass-card {
  width: 100%;
  max-width: 480px;
  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-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-xl), inset 0 0 20px rgba(255, 255, 255, 0.05);
  animation: slideUpFade 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

[data-theme="light"] .auth-glass-card {
  background: rgba(255, 255, 255, 0.6);
  border-color: rgba(255, 255, 255, 0.8);
  box-shadow: 0 20px 40px rgba(0,0,0,0.05), inset 0 0 20px rgba(255,255,255,0.5);
}

[data-theme="light"] .auth-back-btn, 
[data-theme="light"] .auth-toggles {
  background: rgba(255, 255, 255, 0.6);
  border-color: rgba(255, 255, 255, 0.8);
  color: var(--text-primary);
}

.auth-title {
  text-align: center;
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-2);
}

.auth-subtitle {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  margin-bottom: var(--space-6);
}

.auth-subtitle a {
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
}

/* Social Buttons */
.auth-social {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.auth-social__btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3);
  background: rgba(var(--bg-secondary-rgb), 0.4);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.auth-social__btn:hover {
  border-color: var(--color-primary);
  background: rgba(var(--color-primary-rgb), 0.1);
  transform: translateY(-2px);
}

.auth-social__btn i {
  font-size: var(--font-size-lg);
}

/* Divider */
.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.auth-divider::before, 
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--glass-border);
}

.auth-divider span {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
}

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

.auth-form .form-input {
  /* Make input slightly glassy to blend */
  background: rgba(var(--bg-secondary-rgb), 0.4);
  border: 1px solid var(--border-color);
  padding: var(--space-3) var(--space-4);
}

.auth-form .form-input:focus {
  background: rgba(var(--bg-secondary-rgb), 0.6);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.auth-form__options {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-6);
}

.auth-form__remember {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  cursor: pointer;
}

.auth-form__remember input {
  accent-color: var(--color-primary);
}

.auth-form__forgot {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
}

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

.auth-form__terms {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  margin-bottom: var(--space-6);
}

.auth-form__terms input {
  accent-color: var(--color-primary);
  margin-top: 2px;
}

.auth-form__terms a {
  color: var(--color-primary);
}

.password-wrap {
  position: relative;
}

.password-toggle {
  position: absolute;
  top: 50%;
  inset-inline-end: var(--space-4);
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  font-size: var(--font-size-base);
  padding: 0;
}

.password-strength {
  height: 4px;
  border-radius: 2px;
  background: var(--border-color);
  margin-top: var(--space-2);
  overflow: hidden;
}

.password-strength__bar {
  height: 100%;
  width: 0;
  border-radius: 2px;
  transition: width 0.3s ease, background 0.3s ease;
}

.password-strength[data-strength="1"] .password-strength__bar { width: 25%; background: #E53E3E; }
.password-strength[data-strength="2"] .password-strength__bar { width: 50%; background: #DD6B20; }
.password-strength[data-strength="3"] .password-strength__bar { width: 75%; background: #ECC94B; }
.password-strength[data-strength="4"] .password-strength__bar { width: 100%; background: #48BB78; }

/* Responsive adjustments */
@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
  .auth-topbar {
    padding: var(--space-4);
  }
}