/* ============================================
   NutriMove — Auth Styles (Premium)
   ============================================ */

/* ---- Layout ---- */
.auth-layout {
  display: flex;
  min-height: 100vh;
  background: var(--bg-primary);
}

.auth-layout--centered {
  justify-content: center;
}

/* ---- Left Banner ---- */
.auth-banner {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-12);
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
  max-width: 50%;
}

.auth-banner-content {
  position: relative;
  z-index: 2;
  max-width: 440px;
}

.auth-banner-logo {
  margin-bottom: var(--space-8);
}

.auth-banner-logo svg {
  filter: drop-shadow(0 0 20px rgba(16, 185, 129, 0.3));
}

.auth-banner-title {
  font-size: var(--text-3xl);
  font-weight: var(--font-extrabold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.text-green {
  color: var(--primary);
}

.auth-banner-subtitle {
  font-size: var(--text-base);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-10);
}

.auth-banner-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.auth-banner-feature {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.auth-banner-feature-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  background: var(--primary-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Banner decoration circles */
.auth-banner-decoration {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 1;
}

.auth-banner-circle {
  position: absolute;
  border-radius: 50%;
  opacity: 0.06;
}

.auth-banner-circle--1 {
  width: 500px;
  height: 500px;
  background: var(--primary);
  top: -150px;
  right: -150px;
}

.auth-banner-circle--2 {
  width: 350px;
  height: 350px;
  background: var(--secondary);
  bottom: -100px;
  left: -100px;
}

.auth-banner-circle--3 {
  width: 200px;
  height: 200px;
  background: var(--primary);
  bottom: 20%;
  right: 10%;
  opacity: 0.04;
}

/* ---- Right Form Section ---- */
.auth-form-section {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  position: relative;
  z-index: 1;
  max-width: 50%;
}

.auth-form-section--centered {
  max-width: 100%;
}

.auth-form-container {
  width: 100%;
  max-width: 420px;
  animation: fadeInUp 0.5s ease;
}

.auth-form-container--narrow {
  max-width: 400px;
}

/* ---- Logo ---- */
.auth-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.auth-logo svg {
  flex-shrink: 0;
}

.auth-logo-text {
  font-size: var(--text-xl);
  font-weight: var(--font-extrabold);
  color: var(--text-primary);
}

/* ---- Header ---- */
.auth-header {
  margin-bottom: var(--space-8);
}

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

.auth-subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: var(--leading-relaxed);
}

/* ---- Form ---- */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* Form rows */
.form-row {
  display: flex;
  gap: var(--space-4);
}

.form-row--between {
  justify-content: space-between;
  align-items: center;
}

/* ---- Checkbox ---- */
.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-normal);
}

.form-checkbox input[type="checkbox"] {
  display: none;
}

.form-checkbox-mark {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border-color-hover);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
  transition: all var(--transition-fast);
  position: relative;
}

.form-checkbox-mark::after {
  content: '';
  width: 10px;
  height: 6px;
  border-left: 2px solid white;
  border-bottom: 2px solid white;
  transform: rotate(-45deg) scale(0);
  transition: transform var(--transition-fast);
  position: absolute;
  top: 3px;
}

.form-checkbox input:checked + .form-checkbox-mark {
  background: var(--primary);
  border-color: var(--primary);
}

.form-checkbox input:checked + .form-checkbox-mark::after {
  transform: rotate(-45deg) scale(1);
}

.form-checkbox-label {
  flex: 1;
}

.form-checkbox-label a {
  color: var(--primary);
  font-weight: var(--font-medium);
}

/* ---- Links ---- */
.form-link {
  font-size: var(--text-sm);
  color: var(--primary);
  transition: color var(--transition-fast);
}

.form-link:hover {
  color: var(--primary-light);
}

.form-link--bold {
  font-weight: var(--font-semibold);
}

/* ---- Buttons ---- */
.btn-block {
  width: 100%;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  justify-content: center;
}

.btn-social {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.btn-social:hover {
  border-color: var(--border-color-hover);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transform: translateY(-1px);
}

/* ---- Toggle password ---- */
.form-input-toggle {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  color: var(--text-dark);
  padding: var(--space-1);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  background: none;
  border: none;
}

.form-input-toggle:hover {
  color: var(--text-secondary);
}

.form-input-icon .form-input-toggle ~ .form-input,
.form-input-icon:has(.form-input-toggle) .form-input {
  padding-right: 44px;
}

/* ---- Password Strength ---- */
.password-strength {
  margin-top: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.password-strength-bars {
  display: flex;
  gap: var(--space-1);
  flex: 1;
}

.password-strength-bar {
  flex: 1;
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  transition: background-color var(--transition-fast);
}

.password-strength-bar.active {
  background: var(--error);
}

.password-strength-bar.active[data-level="2"] {
  background: var(--warning);
}

.password-strength-bar.active[data-level="3"] {
  background: var(--accent);
}

.password-strength-bar.active[data-level="4"] {
  background: var(--primary);
}

.password-strength-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-base), background-color var(--transition-base);
  width: 0;
}

.password-strength-text,
.password-strength-label {
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  white-space: nowrap;
  min-width: 70px;
  text-align: right;
  transition: color var(--transition-fast);
}

/* ---- Divider ---- */
.auth-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin: var(--space-6) 0;
  color: var(--text-dark);
  font-size: var(--text-sm);
}

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

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

/* ---- Footer ---- */
.auth-footer {
  text-align: center;
  margin-top: var(--space-8);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* ---- Back Link ---- */
.auth-back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-muted);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-6);
  transition: color var(--transition-fast);
}

.auth-back-link:hover {
  color: var(--primary);
}

.auth-back-link svg {
  transition: transform var(--transition-fast);
}

.auth-back-link:hover svg {
  transform: translateX(-3px);
}

/* ---- Success State ---- */
.auth-success {
  text-align: center;
}

.auth-success-icon {
  margin: 0 auto var(--space-6);
  animation: scaleIn 0.5s ease;
}

.auth-success-hint {
  font-size: var(--text-xs);
  color: var(--text-dark);
  margin-bottom: var(--space-6);
  line-height: var(--leading-relaxed);
}

/* ---- Loading state on buttons ---- */
.btn[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

.btn .btn-loading {
  display: none;
}

.btn[disabled] .btn-loading {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-right: var(--space-2);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .auth-banner {
    display: none;
  }

  .auth-form-section {
    max-width: 100%;
  }

  .auth-layout {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .auth-form-container {
    padding: 0 var(--space-2);
  }

  .auth-social {
    flex-direction: column;
  }

  .form-row {
    flex-direction: column;
    gap: var(--space-4);
  }

  .form-row--between {
    flex-direction: row;
  }
}