/* =====================================================
   AUTH PAGES - Login, Register, Forgot Password
   Modern, Clean Design with Glassmorphism
===================================================== */

/* =============== AUTH LAYOUT =============== */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-lg);
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
}

/* Animated background gradient */
.auth-container::before {
  content: '';
  position: absolute;
  width: 150%;
  height: 150%;
  background: radial-gradient(circle at 20% 50%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
              radial-gradient(circle at 80% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
  animation: rotateBackground 20s linear infinite;
  pointer-events: none;
}

@keyframes rotateBackground {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* =============== AUTH CARD =============== */
.auth-card {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 450px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(20px);
  padding: var(--spacing-2xl);
  animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* =============== AUTH HEADER =============== */
.auth-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.auth-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: var(--gradient-primary);
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-lg);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.auth-logo svg {
  width: 32px;
  height: 32px;
  fill: white;
}

.auth-title {
  font-size: 1.875rem;
  font-weight: 800;
  margin-bottom: var(--spacing-sm);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-subtitle {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* =============== TAB SWITCHER =============== */
.auth-tabs {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 0.375rem;
}

.auth-tab {
  flex: 1;
  padding: 0.625rem 1rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
}

.auth-tab.active {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.auth-tab:not(.active):hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

/* =============== FORM ELEMENTS =============== */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.auth-input-group {
  position: relative;
}

.auth-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.auth-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.auth-input-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.25rem;
  height: 1.25rem;
  color: var(--text-muted);
  pointer-events: none;
  transition: color var(--transition-base);
}

.auth-input {
  width: 100%;
  padding: 0.875rem 1rem 0.875rem 3rem;
  font-size: 0.9375rem;
  color: var(--text-primary);
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  font-family: inherit;
}

.auth-input:focus {
  outline: none;
  border-color: var(--brand-primary);
  background: var(--bg-primary);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.auth-input:focus + .auth-input-icon {
  color: var(--brand-primary);
}

.auth-input::placeholder {
  color: var(--text-muted);
}

/* Password toggle */
.auth-password-toggle {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-base);
}

.auth-password-toggle:hover {
  color: var(--brand-primary);
}

.auth-password-toggle svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* =============== SUBMIT BUTTON =============== */
.auth-submit {
  width: 100%;
  padding: 0.875rem 1.5rem;
  font-size: 1rem;
  font-weight: 700;
  color: white;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.auth-submit::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.auth-submit:hover::before {
  left: 100%;
}

.auth-submit:hover:not(:disabled) {
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  transform: translateY(-2px);
}

.auth-submit:active:not(:disabled) {
  transform: translateY(0);
}

.auth-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Loading state */
.auth-submit.loading {
  pointer-events: none;
}

.auth-submit.loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  top: 50%;
  left: 50%;
  margin: -8px 0 0 -8px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* =============== ALERTS =============== */
.auth-alert {
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  font-size: 0.875rem;
  line-height: 1.5;
  animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.auth-alert-icon {
  flex-shrink: 0;
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.125rem;
}

.auth-alert-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--brand-success);
}

.auth-alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: var(--brand-danger);
}

.auth-alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--brand-warning);
}

.auth-alert-info {
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.3);
  color: var(--brand-info);
}

/* =============== FOOTER LINKS =============== */
.auth-footer {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

.auth-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.auth-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
}

.auth-link:hover {
  color: var(--brand-primary);
  background: var(--bg-hover);
}

.auth-link svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}

.auth-divider {
  text-align: center;
  margin: var(--spacing-lg) 0;
  position: relative;
}

.auth-divider::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 1px;
  background: var(--border-color);
}

.auth-divider-text {
  position: relative;
  display: inline-block;
  padding: 0 var(--spacing-md);
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: 0.8125rem;
  font-weight: 600;
}

/* =============== CHECKBOX & REMEMBER ME =============== */
.auth-checkbox-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.auth-checkbox {
  width: 1.125rem;
  height: 1.125rem;
  accent-color: var(--brand-primary);
  cursor: pointer;
}

.auth-checkbox-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  cursor: pointer;
  user-select: none;
}

/* =============== RESPONSIVE =============== */
@media (max-width: 480px) {
  .auth-card {
    padding: var(--spacing-xl);
  }
  
  .auth-title {
    font-size: 1.5rem;
  }
  
  .auth-tabs {
    flex-direction: column;
  }
}

/* =============== DARK MODE ENHANCEMENTS =============== */
body:not(.light-theme) .auth-card {
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid rgba(148, 163, 184, 0.1);
}

body:not(.light-theme) .auth-input {
  background: rgba(15, 23, 42, 0.5);
}

body:not(.light-theme) .auth-input:focus {
  background: rgba(15, 23, 42, 0.8);
}