/**
 * BlueCart Auth Page - Modular CSS System
 * Authentication page styles using modular foundation
 */

/* ========================================
   AUTH PAGE BODY & LAYOUT
   ======================================== */

/* Auth Page Body Override */
body.auth-page {
  background: var(--gradient-primary);
  min-height: 100vh;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--spacing-5);
  position: relative;
  overflow-x: hidden;
  overflow-y: auto;
}

body.auth-page::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="20" cy="20" r="1" fill="white" opacity="0.1"/><circle cx="80" cy="40" r="1" fill="white" opacity="0.1"/><circle cx="40" cy="80" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  pointer-events: none;
}

/* ========================================
   AUTH CONTAINERS
   ======================================== */

.auth-container {
  max-width: 480px;
  margin: 3rem auto;
  padding: var(--spacing-6, 1.5rem);
  border-radius: var(--border-radius-lg, 16px);
  background: var(--bg-primary, rgba(255, 255, 255, 0.95));
  border: 1px solid var(--slate-200, #e2e8f0);
  box-shadow: var(--shadow-2xl, 0 25px 50px -12px rgba(0, 0, 0, 0.25));
  width: 100%;
  padding: var(--spacing-12, 3rem) var(--spacing-10, 2.5rem);
  text-align: center;
  animation: slideUp 0.6s ease-out;
  position: relative;
  backdrop-filter: blur(20px);
}

.auth-wrapper {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--spacing-8);
  width: 100%;
  max-width: 1080px;
}

.auth-left {
  display: flex;
  align-items: center;
  justify-content: center;
}

.auth-right {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ========================================
   BRANDING SECTION
   ======================================== */

.logo-section {
  margin-bottom: var(--spacing-8);
}

.logo {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-2);
  display: block;
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.logo-subtitle {
  color: var(--text-light-secondary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.brand {
  color: var(--text-light);
  text-align: center;
  max-width: 400px;
}

.brand-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3);
  margin-bottom: var(--spacing-6);
  animation: brandEntrance 1s ease-out;
}

.brand-text {
  font-size: 3.5rem;
  font-weight: var(--font-weight-black);
  letter-spacing: -0.02em;
  line-height: 1;
}

.blue-text {
  color: #ffffff;
}

.cart-text {
  color: var(--bluecart-cyan);
}

.brand-cart-icon {
  width: 48px;
  height: 48px;
  color: var(--bluecart-cyan);
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.2));
  animation: cartFloat 3s ease-in-out infinite;
}

.brand-tagline {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-medium);
  opacity: 0.95;
  line-height: 1.3;
  letter-spacing: 0.01em;
}

@keyframes brandEntrance {
  0% { 
    opacity: 0;
    transform: translateY(-20px);
  }
  100% { 
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes cartFloat {
  0%, 100% { 
    transform: translateY(0px);
  }
  50% { 
    transform: translateY(-8px);
  }
}

/* ========================================
   AUTH FORM ELEMENTS
   ======================================== */

.auth-title {
  font-size: var(--font-size-2xl, 2rem);
  font-weight: var(--font-weight-bold, 700);
  color: var(--text-primary, #1a202c);
  margin-bottom: var(--spacing-4, 1rem);
}

.auth-subtitle {
  color: var(--text-light-secondary, rgba(255,255,255,0.9));
  font-size: var(--font-size-base, 1rem);
  margin-bottom: var(--spacing-8, 2rem);
  text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-5, 1.25rem);
  margin-bottom: var(--spacing-6, 1.5rem);
  width: 100%;
  opacity: 1;
  visibility: visible;
}

/* ========================================
   INPUT FIELDS
   ======================================== */

.input-group {
  position: relative;
  margin-bottom: 1.5rem;
  width: 100%;
  display: block !important;
  visibility: visible !important;
  opacity: 1 !important;
}

.input-field {
  width: 100%;
  padding: var(--spacing-4, 1rem) var(--spacing-5, 1.25rem) var(--spacing-4, 1rem) var(--spacing-12, 3rem);
  border: 2px solid #2E86C1;
  border-radius: var(--border-radius, 8px);
  font-size: var(--font-size-base, 1rem);
  font-weight: var(--font-weight-normal, 400);
  background: white;
  backdrop-filter: blur(10px);
  transition: var(--transition-fast, all 0.3s ease);
  outline: none;
  color: #1a202c;
  min-height: 50px;
  box-sizing: border-box;
  display: block !important;
  visibility: visible !important;
  opacity: 1 !important;
}

.input-field:focus {
  border-color: var(--bluecart-primary, #2E86C1);
  box-shadow: 0 0 0 3px var(--bluecart-primary-alpha, rgba(46, 134, 193, 0.1));
  background: white;
}

.input-field::placeholder {
  color: #6b7280;
}

.input-icon {
  position: absolute;
  top: 50%;
  left: var(--spacing-4, 1rem);
  transform: translateY(-50%);
  color: #6b7280;
  font-size: var(--font-size-xl, 1.25rem);
  pointer-events: none;
  transition: var(--transition-fast, all 0.3s ease);
}

.input-field:focus + .input-icon {
  color: var(--bluecart-secondary, #17A2B8);
}

/* ========================================
   BUTTONS
   ======================================== */

.auth-btn {
  padding: var(--spacing-3, 1rem) var(--spacing-6, 1.5rem);
  background: var(--gradient-primary, linear-gradient(135deg, #2E86C1 0%, #17A2B8 100%));
  color: var(--text-light, #ffffff);
  border-radius: var(--radius-lg, 12px);
  border: none;
  cursor: pointer;
  transition: var(--transition-fast, all 0.3s ease);
  font-size: 1rem;
  font-weight: 600;
  width: 100%;
  min-height: 50px;
}

.auth-btn:hover {
  background: var(--glass, rgba(255,255,255,0.8));
  border-color: var(--slate-200, #e2e8f0);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg, 0 10px 15px -3px rgba(0, 0, 0, 0.1));
  color: var(--bluecart-primary, #2E86C1);
}

.auth-btn:active {
  transform: scale(0.98);
}

.auth-btn:disabled {
  background: var(--bg-secondary);
  border-color: var(--slate-100);
  color: var(--text-secondary);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-loading {
  position: relative;
  color: transparent;
}

.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 20px;
  height: 20px;
  border: 2px solid var(--slate-100);
  border-top-color: var(--text-light);
  border-radius: 50%;
  animation: spin 1s ease-in-out infinite;
}

/* ========================================
   SOCIAL AUTHENTICATION
   ======================================== */

.social-auth {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3);
  margin: var(--spacing-6) 0;
}

.social-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-5);
  border: 2px solid var(--slate-200);
  border-radius: var(--border-radius);
  background: var(--bg-primary);
  color: var(--text-primary);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: var(--transition-fast);
  cursor: pointer;
}

.social-button:hover {
  border-color: var(--bluecart-primary);
  background: var(--bg-secondary);
  transform: translateY(-1px);
}

.btn-google {
  width: 100%;
  padding: var(--spacing-4, 1rem);
  background: white;
  color: #4b5563;
  border: 2px solid #e5e7eb;
  border-radius: var(--border-radius, 8px);
  font-size: var(--font-size-base, 1rem);
  font-weight: var(--font-weight-medium, 500);
  cursor: pointer;
  transition: var(--transition-fast, all 0.3s ease);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3, 0.75rem);
  margin-bottom: var(--spacing-6, 1.5rem);
  min-height: 50px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn-google:hover {
  background: #f9fafb;
  border-color: #d1d5db;
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.google-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* ========================================
   DIVIDERS & NAVIGATION
   ======================================== */

.divider {
  display: flex;
  align-items: center;
  margin: var(--spacing-6, 1.5rem) 0;
  color: #6b7280;
  font-size: var(--font-size-sm, 0.875rem);
  text-align: center;
  position: relative;
}

.divider::before {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 1px;
  background: #e5e7eb;
  content: '';
}

.divider span {
  padding: 0 var(--spacing-4, 1rem);
  background: var(--bg-primary, rgba(255, 255, 255, 0.95));
  position: relative;
}

.auth-switch {
  color: var(--text-light-secondary);
  font-size: var(--font-size-sm);
}

.auth-switch a {
  color: var(--bluecart-secondary);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  transition: var(--transition-fast);
}

.auth-switch a:hover {
  color: var(--bluecart-primary);
}

.auth-toggle {
  color: var(--text-light-secondary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
}

.auth-toggle a {
  color: var(--bluecart-secondary);
  cursor: pointer;
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

/* ========================================
   MESSAGES & FEEDBACK
   ======================================== */

.message {
  padding: var(--spacing-3) var(--spacing-4);
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--spacing-5);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  animation: slideDown 0.3s ease-out;
}

.message.error {
  background: var(--bluecart-danger);
  color: var(--bluecart-danger);
  border: 1px solid var(--bluecart-danger);
}

.message.success {
  background: var(--bluecart-success);
  color: var(--bluecart-success);
  border: 1px solid var(--bluecart-success);
}

/* ========================================
   TABS
   ======================================== */

.tabs {
  display: flex;
  margin-bottom: var(--spacing-6);
  border-bottom: 2px solid var(--slate-100);
}

.tab {
  flex: 1;
  padding: var(--spacing-3) var(--spacing-2);
  text-align: center;
  cursor: pointer;
  font-weight: var(--font-weight-medium);
  color: var(--text-light);
  transition: var(--transition-fast);
  position: relative;
}

.tab:hover {
  color: var(--bluecart-secondary);
}

.tab.active {
  color: var(--bluecart-secondary);
  font-weight: var(--font-weight-semibold);
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--bluecart-secondary);
}

/* ========================================
   FORM CONTROLS
   ======================================== */

.remember-me {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-align: left;
}

/* ========================================
   ANIMATIONS
   ======================================== */

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

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 1200px) {
  .brand-text {
    font-size: 3.2rem;
  }
  
  .brand-cart-icon {
    width: 42px;
    height: 42px;
  }
}

@media (max-width: 900px) {
  .auth-wrapper { 
    grid-template-columns: 1fr;
    min-height: auto;
    align-items: flex-start;
  }
  
  .auth-left { 
    display: none; 
  }
  
  body.auth-page {
    align-items: flex-start;
    padding: var(--spacing-2);
  }
}

@media (max-width: 768px) {
  .auth-container {
    padding: var(--spacing-10) var(--spacing-8);
  }
  
  .brand-text {
    font-size: 2.8rem;
  }
  
  .brand-cart-icon {
    width: 36px;
    height: 36px;
  }
  
  .brand-tagline {
    font-size: var(--font-size-lg);
  }
}

@media (max-width: 480px) {
  .auth-container {
    padding: var(--spacing-8) var(--spacing-6);
    max-width: 360px;
    margin: var(--spacing-5) 0;
  }

  .auth-title {
    font-size: var(--font-size-2xl);
  }

  .auth-subtitle {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-6);
  }
  
  .brand-text {
    font-size: 2.2rem;
  }
  
  .brand-cart-icon {
    width: 28px;
    height: 28px;
  }
  
  .brand-tagline {
    font-size: var(--font-size-base);
  }

  .input-field {
    padding: var(--spacing-3) var(--spacing-4) var(--spacing-3) var(--spacing-11);
    font-size: var(--font-size-sm);
  }

  .input-icon {
    font-size: var(--font-size-lg);
  }

  .auth-btn,
  .btn-google {
    padding: var(--spacing-3);
    font-size: var(--font-size-sm);
  }

  .logo {
    font-size: var(--font-size-2xl);
  }

  .logo-subtitle {
    font-size: var(--font-size-sm);
  }
  
  body.auth-page {
    padding: var(--spacing-2);
    min-height: 100vh;
  }
}

@media (max-width: 360px) {
  .auth-container {
    padding: var(--spacing-6) var(--spacing-5);
  }

  .input-field {
    padding: var(--spacing-3) var(--spacing-3) var(--spacing-3) var(--spacing-10);
    font-size: var(--font-size-sm);
  }

  .auth-btn,
  .btn-google {
    padding: var(--spacing-3);
    font-size: var(--font-size-sm);
  }

  .divider {
    margin: var(--spacing-5) 0;
    font-size: var(--font-size-xs);
  }

  .auth-switch,
  .auth-toggle {
    font-size: var(--font-size-xs);
  }
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

.input-field:focus,
.auth-btn:focus,
.btn-google:focus {
  outline: 2px solid var(--bluecart-primary);
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  .auth-container,
  .input-field,
  .auth-btn,
  .btn-google,
  .social-button {
  border: 2px solid var(--text-primary);
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  .auth-container,
  .input-field,
  .auth-btn,
  .btn-google,
  .brand-logo,
  .brand-cart-icon {
    animation: none;
    transition: none;
  }
}