/* 📱 InvestQuest Mobile Enhancements CSS */
/* Critical mobile-first improvements based on ProjectionLab analysis */

/* =================================
   CRITICAL MOBILE FIXES
   ================================= */

/* Fix iOS input zoom issue */
input, select, textarea {
  font-size: 16px !important; /* Prevents zoom on iOS */
}

/* Enhanced touch targets - WCAG 2.1 AA compliant */
.touch-target {
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.2s ease;
}

/* Improved button targets for mobile */
button, .btn, .nav-toggle, .auth-signin-btn {
  min-height: 44px;
  min-width: 44px;
  cursor: pointer;
  touch-action: manipulation; /* Eliminates 300ms delay */
}

/* Enhanced navigation toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  border-radius: 8px;
  transition: background-color 0.2s ease;
}

.nav-toggle:hover,
.nav-toggle:focus {
  background-color: var(--gray-100);
  outline: 2px solid var(--primary-500);
}

.nav-toggle span {
  width: 24px;
  height: 3px;
  background-color: var(--gray-700);
  margin: 2px 0;
  transition: all 0.3s ease;
  border-radius: 2px;
}

/* Animated hamburger states */
.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* =================================
   MOBILE NAVIGATION SYSTEM
   ================================= */

/* Mobile menu overlay */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    bottom: 0;
    background: white;
    flex-direction: column;
    padding: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    z-index: 999;
    max-width: 300px;
    overflow-y: auto;
  }
  
  .nav-links.active {
    transform: translateX(0);
  }
  
  .nav-link {
    display: block;
    padding: 16px 0;
    font-size: 18px;
    font-weight: 500;
    color: var(--gray-700);
    text-decoration: none;
    border-bottom: 1px solid var(--gray-200);
    transition: color 0.2s ease;
  }
  
  .nav-link:hover,
  .nav-link.active {
    color: var(--primary-600);
  }
  
  .nav-cta {
    margin-top: 20px;
    padding: 12px 24px;
    background: var(--primary-500);
    color: white !important;
    text-align: center;
    border-radius: 8px;
    border-bottom: none;
  }
  
  .nav-cta:hover {
    background: var(--primary-600);
  }
  
  /* Navigation backdrop */
  .nav-links.active::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: -1;
  }
}

/* =================================
   MOBILE FORM ENHANCEMENTS
   ================================= */

@media (max-width: 768px) {
  /* Single column layout */
  .calculator-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .form-row {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  /* Remove sticky positioning on mobile */
  .input-panel {
    position: static;
    margin-bottom: 20px;
  }
  
  /* Enhanced form inputs */
  .form-group input,
  .form-group select {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: 12px;
    border: 2px solid var(--gray-300);
    transition: border-color 0.2s ease;
  }
  
  .form-group input:focus,
  .form-group select:focus {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    outline: none;
  }
  
  /* Input mode selector improvements */
  .input-mode-selector {
    margin-top: 12px;
    background: var(--gray-100);
    border-radius: 12px;
    padding: 4px;
    display: flex;
    gap: 4px;
  }
  
  .mode-option {
    flex: 1;
    padding: 12px 16px;
    background: transparent;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
  }
  
  .mode-option.active {
    background: var(--primary-500);
    color: white;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
  }
  
  /* Calculate button enhancement */
  .calculate-btn {
    width: 100%;
    padding: 16px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 12px;
    background: var(--primary-500);
    color: white;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 20px;
  }
  
  .calculate-btn:hover {
    background: var(--primary-600);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.3);
  }
  
  .calculate-btn:active {
    transform: translateY(0);
  }
}

/* =================================
   MOBILE DASHBOARD ENHANCEMENTS
   ================================= */

@media (max-width: 768px) {
  /* Dashboard hero section */
  .dashboard-hero {
    padding: 30px 0;
  }
  
  .hero-content {
    flex-direction: column;
    text-align: left;
    gap: 24px;
  }
  
  .welcome-section {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  
  .user-avatar .avatar-circle {
    width: 60px;
    height: 60px;
    font-size: 20px;
  }
  
  .hero-actions {
    width: 100%;
    flex-direction: column;
    gap: 12px;
  }
  
  .cta-primary.large,
  .cta-secondary.large {
    width: 100%;
    justify-content: center;
    padding: 16px;
    font-size: 16px;
  }
  
  /* Stats grid mobile layout */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  
  .modern-stat-card {
    padding: 20px 16px;
  }
  
  .modern-stat-card h3 {
    font-size: 1.5rem;
  }
  
  /* Calculations section mobile */
  .section-header {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
    text-align: left;
  }
  
  .header-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  
  .search-box {
    order: 1;
  }
  
  .search-box input {
    width: 100%;
  }
  
  .calculations-controls {
    flex-direction: column;
    gap: 16px;
    padding: 16px;
  }
  
  .filter-tabs {
    justify-content: flex-start;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .filter-tab {
    white-space: nowrap;
    flex-shrink: 0;
  }
  
  /* Calculation cards mobile */
  .calculations-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .calculation-card {
    padding: 16px;
  }
  
  .calculation-header {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  
  .calculation-actions {
    justify-content: flex-end;
  }
}

/* =================================
   MOBILE LANDING PAGE
   ================================= */

@media (max-width: 768px) {
  /* Hero section mobile */
  .hero {
    min-height: 80vh;
    padding: 60px 20px;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }
  
  .hero-subtitle {
    font-size: clamp(1rem, 4vw, 1.25rem);
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }
  
  .cta-primary,
  .cta-secondary {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }
  
  /* Features section mobile */
  .features-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .feature-card {
    padding: 24px 20px;
  }
  
  /* Perfect for section mobile */
  .perfect-for-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  /* Steps container mobile */
  .steps-container {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* =================================
   MOBILE CALCULATOR PAGE
   ================================= */

@media (max-width: 768px) {
  .calculator-header {
    padding: 30px 20px;
  }
  
  .calculator-header h1 {
    font-size: clamp(1.75rem, 6vw, 2.5rem);
  }
  
  .calculator-header p {
    font-size: clamp(1rem, 3vw, 1.125rem);
  }
  
  /* Tool explanation mobile */
  .tool-explanation {
    margin-top: 20px;
  }
  
  .explanation-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  .explanation-card {
    padding: 16px;
  }
  
  .perfect-for-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  /* Results panel mobile */
  .results-panel {
    padding: 20px;
    margin-top: 20px;
  }
  
  .summary-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  
  .summary-card {
    padding: 16px;
  }
  
  .summary-card .value {
    font-size: 1.5rem;
  }
  
  /* Charts container mobile */
  .charts-container {
    margin: 20px 0;
  }
  
  .chart-wrapper {
    padding: 16px;
    margin-bottom: 20px;
  }
  
  /* Investment comparison mobile */
  #leftComparisonContainer {
    margin-top: 20px;
    padding: 16px;
  }
  
  .left-comparison-item {
    padding: 16px;
  }
  
  .comparison-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* =================================
   MOBILE PERFORMANCE OPTIMIZATIONS
   ================================= */

/* Hardware acceleration for smooth animations */
.nav-toggle,
.nav-links,
.modern-stat-card,
.calculation-card {
  transform: translateZ(0);
  backface-visibility: hidden;
}

/* Optimize scrolling performance */
.nav-links,
.calculations-container {
  -webkit-overflow-scrolling: touch;
  overflow-scrolling: touch;
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* =================================
   MOBILE ACCESSIBILITY ENHANCEMENTS
   ================================= */

/* Focus states for mobile */
button:focus,
input:focus,
select:focus,
textarea:focus,
a:focus {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .nav-toggle span {
    background-color: #000;
  }
  
  .nav-link {
    color: #000;
  }
  
  button,
  .btn {
    border: 2px solid #000;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --gray-50: #1f2937;
    --gray-100: #374151;
    --gray-200: #4b5563;
    --gray-900: #f9fafb;
  }
}

/* =================================
   MOBILE UTILITY CLASSES
   ================================= */

.mobile-only {
  display: block;
}

.desktop-only {
  display: none;
}

@media (min-width: 769px) {
  .mobile-only {
    display: none;
  }
  
  .desktop-only {
    display: block;
  }
}

/* Mobile spacing utilities */
.mobile-p-4 { padding: 1rem; }
.mobile-p-6 { padding: 1.5rem; }
.mobile-m-4 { margin: 1rem; }
.mobile-m-6 { margin: 1.5rem; }

@media (max-width: 768px) {
  .mobile-p-4 { padding: 1rem !important; }
  .mobile-p-6 { padding: 1.5rem !important; }
  .mobile-m-4 { margin: 1rem !important; }
  .mobile-m-6 { margin: 1.5rem !important; }
}

/* Mobile text utilities */
.mobile-text-center {
  text-align: center;
}

.mobile-text-left {
  text-align: left;
}

@media (max-width: 768px) {
  .mobile-text-center { text-align: center !important; }
  .mobile-text-left { text-align: left !important; }
}

/* =================================
   MOBILE SPECIFIC ANIMATIONS
   ================================= */

/* Loading spinner for mobile */
.mobile-loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 2px solid var(--gray-200);
  border-top: 2px solid var(--primary-500);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

/* Bounce animation for buttons */
@keyframes bounce {
  0%, 20%, 53%, 80%, 100% {
    transform: translate3d(0,0,0);
  }
  40%, 43% {
    transform: translate3d(0,-8px,0);
  }
  70% {
    transform: translate3d(0,-4px,0);
  }
  90% {
    transform: translate3d(0,-2px,0);
  }
}

.btn-bounce:active {
  animation: bounce 0.6s ease;
}

/* Slide in animation for mobile menu */
@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.nav-links.active {
  animation: slideInLeft 0.3s ease;
}

/* =================================
   MOBILE PRINT STYLES
   ================================= */

@media print {
  .nav-toggle,
  .mobile-only,
  .hero-actions,
  .cta-primary,
  .cta-secondary {
    display: none !important;
  }
  
  .calculator-grid {
    grid-template-columns: 1fr !important;
  }
  
  .form-group input,
  .form-group select {
    border: 1px solid #000 !important;
    background: white !important;
  }
}