/* Modern Responsive Design Enhancements for S.A.R.S. Website */

/* CSS Custom Properties for consistent theming */
:root {
  --primary-color: #e74c3c;
  --secondary-color: #000;
  --accent-color: #c0392b;
  --text-light: #fff;
  --text-dark: #333;
  --bg-dark: #000;
  --bg-light: #f5f5f5;
  --border-radius: 8px;
  --box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  --transition: 0.3s ease;
  
  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-xxl: 3rem;
  
  /* Typography scale */
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
}

/* Modern CSS Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Remove default margins and paddings */
* {
  margin: 0;
  padding: 0;
}

/* Improve text rendering */
body {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeSpeed;
}

/* Responsive images by default */
img,
picture,
video,
canvas,
svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Remove built-in form typography styles */
input,
button,
textarea,
select {
  font: inherit;
}

/* Avoid text overflows */
p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
  hyphens: auto;
}

/* Container utility classes */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--space-md);
}

/* Responsive grid system */
.grid {
  display: grid;
  gap: var(--space-md);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Flexbox utilities */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

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

.justify-between {
  justify-content: space-between;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

/* Spacing utilities */
.m-0 { margin: 0; }
.m-1 { margin: var(--space-xs); }
.m-2 { margin: var(--space-sm); }
.m-3 { margin: var(--space-md); }
.m-4 { margin: var(--space-lg); }

.p-0 { padding: 0; }
.p-1 { padding: var(--space-xs); }
.p-2 { padding: var(--space-sm); }
.p-3 { padding: var(--space-md); }
.p-4 { padding: var(--space-lg); }

/* Text utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }
.text-2xl { font-size: var(--font-size-2xl); }
.text-3xl { font-size: var(--font-size-3xl); }

/* Enhanced Mobile Navigation */
@media (max-width: 768px) {
  .header-content {
    padding: var(--space-sm) var(--space-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .header-logo {
    max-height: 40px;
    width: auto;
  }
  
  .header-right-controls {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
  }
  
  .language-switcher img {
    width: 24px;
    height: auto;
  }
  
  .cart-indicator {
    font-size: var(--font-size-sm);
  }
}

/* Enhanced Sidebar Menu for Mobile */
.sidebar-menu {
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-menu.open {
  transform: translateX(0);
}

@media (max-width: 480px) {
  .sidebar-menu {
    width: 85vw;
    min-width: 280px;
  }
  
  .sidebar-menu ul {
    padding: 0 var(--space-md);
  }
  
  .sidebar-menu ul li a {
    padding: var(--space-md);
    font-size: var(--font-size-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--space-sm);
  }
}

/* Improved Section Layouts */
section {
  padding: var(--space-xxl) 0;
}

@media (max-width: 768px) {
  section {
    padding: var(--space-xl) 0;
  }
  
  h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-lg);
  }
}

@media (max-width: 480px) {
  section {
    padding: var(--space-lg) 0;
  }
  
  h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-md);
  }
}

/* Enhanced Carousel for Mobile */
.carousel {
  position: relative;
  overflow: hidden;
}

.carousel-track {
  display: flex;
  transition: transform 0.3s ease;
  gap: var(--space-md);
}

.carousel-item {
  flex: 1;
  min-width: 0 !important;
  max-width: none !important;
  width: auto !important;
}

@media (max-width: 768px) {
  .carousel-item {
    min-width: 0 !important;
    max-width: none !important;
    width: auto !important;
  }
  
  .carousel-track {
    gap: var(--space-sm);
  }
}

@media (max-width: 480px) {
  .carousel-item {
    min-width: 0 !important;
    max-width: none !important;
    width: auto !important;
  }
  
  .carousel-nav {
    display: none; /* Hide navigation on very small screens */
  }
}

/* Touch-friendly buttons */
.carousel-button,
.listen-button,
.tour-button,
.btn {
  min-height: 44px; /* Apple's recommended touch target size */
  min-width: 44px;
  padding: var(--space-sm) var(--space-lg);
  border: none;
  border-radius: var(--border-radius);
  background: var(--primary-color);
  color: var(--text-light);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  cursor: pointer;
  touch-action: manipulation; /* Improves touch responsiveness */
}

.carousel-button:hover,
.listen-button:hover,
.tour-button:hover,
.btn:hover {
  background: var(--accent-color);
  transform: translateY(-1px);
  box-shadow: var(--box-shadow);
}

.carousel-button:active,
.listen-button:active,
.tour-button:active,
.btn:active {
  transform: translateY(0);
}

/* Improved Form Styling for Mobile */
form input,
form select,
form textarea {
  width: 100%;
  padding: var(--space-md);
  margin-bottom: var(--space-md);
  border: 1px solid #ddd;
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  min-height: 44px; /* Touch-friendly */
  -webkit-appearance: none;
  appearance: none;
}

form input:focus,
form select:focus,
form textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

/* Enhanced Video Container */
.video-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.video-container iframe {
  width: 100%;
  height: 215px; /* 16:9 aspect ratio for 300px width */
  border-radius: var(--border-radius);
}

@media (max-width: 480px) {
  .video-container {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .video-container iframe {
    height: 180px;
  }
}

/* Social Links Enhancement */
.social-links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  margin: var(--space-xl) 0;
}

.social-links a {
  display: block;
  transition: transform var(--transition);
}

.social-links a:hover {
  transform: scale(1.1);
}

.social-links img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

@media (max-width: 480px) {
  .social-links {
    gap: var(--space-md);
  }
  
  .social-links img {
    width: 32px;
    height: 32px;
  }
}

/* Enhanced Modal for Mobile */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-md);
}

.modal-content {
  background: var(--bg-dark);
  border-radius: var(--border-radius);
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
  position: relative;
  padding: var(--space-xl);
}

@media (max-width: 768px) {
  .modal-content {
    padding: var(--space-lg);
    max-width: 95vw;
  }
}

/* Enhanced Shop Grid */
.shop-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

@media (max-width: 768px) {
  .shop-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-md);
  }
}

@media (max-width: 480px) {
  .shop-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
}

/* Loading States */
.loading {
  position: relative;
  overflow: hidden;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.1),
    transparent
  );
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  to {
    left: 100%;
  }
}

/* Accessibility Improvements */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus management */
:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--primary-color);
  color: var(--text-light);
  padding: 8px;
  text-decoration: none;
  border-radius: var(--border-radius);
  z-index: 1001;
  transition: top 0.3s;
}

.skip-link:focus {
  top: 6px;
}

/* Print styles */
@media print {
  .header-right-controls,
  .sidebar-menu,
  .modern-menu-toggle,
  .carousel-nav,
  .back-to-top,
  .scroll-progress {
    display: none !important;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.4;
    color: black;
    background: white;
  }
  
  a {
    color: black;
    text-decoration: underline;
  }
  
  h1, h2, h3 {
    page-break-after: avoid;
  }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-light: #1a1a1a;
    --text-dark: #e0e0e0;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --primary-color: #ff0000;
    --accent-color: #cc0000;
    --border-radius: 4px;
  }
  
  .btn,
  .listen-button,
  .tour-button {
    border: 2px solid currentColor;
  }
}