/* Modern authentication pages with full accessibility */

:root {
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-border: #475569;
  --color-text-primary: #f1f5f9;
  --color-text-secondary: #cbd5e1;
  --color-text-tertiary: #94a3b8;
  --color-danger: #ef4444;
  --color-success: #22c55e;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Space Grotesk", var(--font-sans);
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Light theme support */
[data-theme="light"] {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-border: #e2e8f0;
  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-tertiary: #64748b;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text-primary);
  min-height: 100vh;
  margin: 0;
  padding: 0;
}

/* Auth Page Wrapper */
.auth-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Auth Navbar */
.auth-navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--spacing-md);
}

.auth-navbar-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.auth-navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text-primary);
  font-weight: 700;
  font-size: 1.25rem;
  font-family: var(--font-display);
}

.auth-navbar-brand .material-symbols-outlined {
  font-size: 1.75rem;
  color: var(--color-primary);
}

.auth-navbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.auth-nav-link {
  padding: 8px 16px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  color: #64748b;
}

.auth-nav-link:hover {
  color: #0f172a;
  background: rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .auth-nav-link {
  color: #94a3b8;
}

[data-theme="dark"] .auth-nav-link:hover {
  color: #f1f5f9;
  background: rgba(255, 255, 255, 0.05);
}

.auth-nav-link--primary {
  background: var(--color-primary);
  color: #ffffff !important;
}

.auth-nav-link--primary:hover {
  background: var(--color-primary-hover);
  color: #ffffff !important;
}

.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--color-text-primary);
}

.theme-toggle-btn .material-symbols-outlined {
  font-size: 1.4rem;
}

/* Auth Container */
.auth-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl) var(--spacing-md);
  width: 100%;
  max-width: 450px;
  margin: 0 auto;
  animation: fade-in 0.4s ease-out;
}

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

.auth-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--spacing-md);
  overflow: hidden;
  width: 100%;
  box-sizing: border-box;
}

.auth-header {
  text-align: center;
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
}

.auth-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: var(--color-primary);
  border-radius: 50%;
  margin-bottom: var(--spacing-md);
}

.auth-icon .material-symbols-outlined {
  font-size: 2rem;
  color: white;
}

.auth-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

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

.auth-body {
  padding: var(--spacing-xl);
}

/* Alert */
.alert {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border-radius: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  font-size: 0.875rem;
}

.alert-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--color-danger);
  color: #fca5a5;
}

/* Form */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
  font-size: 0.9375rem;
}

.required {
  color: var(--color-danger);
  margin-left: var(--spacing-sm);
}

.form-input {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--spacing-sm);
  color: var(--color-text-primary);
  font-family: inherit;
  font-size: 1rem;
  transition: all var(--transition-fast);
  box-sizing: border-box;
}

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

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-hint {
  margin-top: var(--spacing-sm);
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* Checkbox */
.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.checkbox-group input[type="checkbox"] {
  margin-top: 4px;
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-primary);
}

.checkbox-group input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.checkbox-label {
  flex: 1;
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  cursor: pointer;
}

/* Button */
.auth-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--spacing-sm);
  font-weight: 600;
  font-size: 1rem;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.auth-btn:hover:not(:disabled) {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

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

.auth-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.auth-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Footer */
.auth-footer {
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

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

.auth-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.auth-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

.auth-link:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Features Highlight */
.auth-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  width: 100%;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--color-text-tertiary);
  font-size: 0.875rem;
  font-weight: 500;
}

.feature-item .material-symbols-outlined {
  font-size: 1.25rem;
  color: var(--color-primary);
}

/* Mobile Responsiveness */
@media (max-width: 600px) {
  .auth-navbar-content {
    height: 56px;
  }
  
  .auth-navbar-brand {
    font-size: 1.1rem;
  }
  
  .auth-navbar-brand .material-symbols-outlined {
    font-size: 1.5rem;
  }
  
  .auth-nav-link {
    padding: 6px 12px;
    font-size: 0.85rem;
  }
  
  .theme-toggle-btn {
    width: 36px;
    height: 36px;
  }
}

@media (max-width: 480px) {
  .auth-container {
    max-width: 100%;
    padding: var(--spacing-lg);
    box-sizing: border-box;
  }

  .auth-card {
    max-width: calc(100vw - 3rem);
    margin: 0 auto;
  }

  .auth-header,
  .auth-body {
    padding: var(--spacing-lg);
  }

  .auth-title {
    font-size: 1.5rem;
  }
  
  .auth-features {
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    max-width: calc(100vw - 3rem);
  }
  
  .feature-item {
    font-size: 0.8rem;
  }
  
  .auth-navbar-brand .brand-text {
    display: none;
  }
}