/* ============================================
   KOOLORI - Modern Kids Coloring Pages Site
   Mobile-First Responsive Design
   ============================================ */

/* ============================================
   CSS VARIABLES (Design Tokens)
   ============================================ */
:root {
  /* Colors - Vibrant & Playful */
  --primary: #FF6B9D;
  --primary-dark: #E5527D;
  --secondary: #4ECDC4;
  --accent: #FFD93D;
  --success: #6BCF7F;
  --danger: #FF6B6B;

  /* Neutral Colors */
  --white: #FFFFFF;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-display: 'Comic Sans MS', 'Chalkboard SE', 'Comic Neue', cursive;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Container */
  --container-max: 1280px;
  --container-padding: 1rem;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: linear-gradient(135deg, #FFF5F7 0%, #E8F5FF 100%);
  color: var(--gray-800);
  line-height: 1.6;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  width: 100%;
}

.page-wrapper {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
  padding: var(--spacing-xl) 0;
}

/* ============================================
   NAVBAR / HEADER
   ============================================ */
.navbar {
  background: var(--white);
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.95);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--container-padding);
  gap: var(--spacing-lg);
}

.navbar-brand {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: bold;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: transform var(--transition-base);
}

.navbar-brand:hover {
  transform: scale(1.05);
}

.navbar-nav {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.navbar-nav a {
  color: var(--gray-700);
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.navbar-nav a:hover {
  background: var(--gray-100);
  color: var(--primary);
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  gap: var(--spacing-xs);
  background: var(--gray-100);
  padding: var(--spacing-xs);
  border-radius: var(--radius-full);
}

.lang-switcher a {
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--gray-600);
}

.lang-switcher a.active {
  background: var(--primary);
  color: var(--white);
}

.lang-switcher a:hover:not(.active) {
  background: var(--gray-200);
  color: var(--gray-800);
}

/* Mobile Menu Toggle */
.navbar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--gray-700);
}

/* ============================================
   BREADCRUMB
   ============================================ */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) 0;
  font-size: 0.875rem;
  color: var(--gray-600);
}

.breadcrumb a {
  color: var(--gray-600);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb-separator {
  color: var(--gray-400);
  user-select: none;
}

.breadcrumb-active {
  color: var(--gray-800);
  font-weight: 500;
}

/* ============================================
   CARDS & DRAWING ITEMS
   ============================================ */
.card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-4px);
}

.drawing-card {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.drawing-card-image {
  position: relative;
  aspect-ratio: 3/4;
  overflow: hidden;
  background: var(--gray-100);
}

.drawing-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.drawing-card:hover .drawing-card-image img {
  transform: scale(1.05);
}

.drawing-card-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background: var(--accent);
  color: var(--gray-900);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  box-shadow: var(--shadow-md);
}

.drawing-card-content {
  padding: var(--spacing-md);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.drawing-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--spacing-xs);
  line-height: 1.4;
}

.drawing-card-category {
  font-size: 0.875rem;
  color: var(--gray-500);
  margin-bottom: var(--spacing-sm);
}

.drawing-card-stats {
  display: flex;
  gap: var(--spacing-md);
  margin-top: auto;
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--gray-200);
  font-size: 0.75rem;
  color: var(--gray-500);
}

/* ============================================
   GRID LAYOUTS
   ============================================ */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

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

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

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

.grid-auto {
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  color: var(--white);
}

.btn-success {
  background: var(--success);
  color: var(--white);
}

.btn-success:hover {
  background: #5AB96D;
  color: var(--white);
}

.btn-secondary {
  background: var(--secondary);
  color: var(--white);
}

.btn-secondary:hover {
  background: #45B8AF;
  color: var(--white);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
}

.btn-lg {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.125rem;
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.875rem;
}

.btn-icon {
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ============================================
   DRAWING DETAIL PAGE
   ============================================ */
.drawing-detail {
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  margin: var(--spacing-xl) 0;
}

.drawing-detail-header {
  padding: var(--spacing-xl);
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: var(--white);
}

.drawing-detail-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  font-family: var(--font-display);
}

.drawing-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  font-size: 0.875rem;
  opacity: 0.95;
}

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

.drawing-image-container {
  background: var(--gray-50);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  text-align: center;
  border: 3px dashed var(--gray-300);
}

.drawing-image-container img {
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.drawing-description {
  font-size: 1.125rem;
  line-height: 1.8;
  color: var(--gray-700);
  margin-bottom: var(--spacing-xl);
}

.drawing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  padding: var(--spacing-xl);
  background: var(--gray-50);
  border-radius: var(--radius-xl);
}

/* ============================================
   PAGINATION
   ============================================ */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
  margin: var(--spacing-2xl) 0;
}

.pagination a,
.pagination span {
  min-width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.pagination a {
  background: var(--white);
  color: var(--gray-700);
  box-shadow: var(--shadow-sm);
}

.pagination a:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-3xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h3 {
  color: var(--white);
  margin-bottom: var(--spacing-md);
  font-size: 1.125rem;
}

.footer-section ul {
  list-style: none;
}

.footer-section ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-section a {
  color: var(--gray-400);
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--primary);
}

.footer-bottom {
  border-top: 1px solid var(--gray-800);
  padding-top: var(--spacing-lg);
  text-align: center;
  font-size: 0.875rem;
  color: var(--gray-500);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

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

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mt-xl {
  margin-top: var(--spacing-xl);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.p-sm {
  padding: var(--spacing-sm);
}

.p-md {
  padding: var(--spacing-md);
}

.p-lg {
  padding: var(--spacing-lg);
}

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

.hidden {
  display: none;
}

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

/* Tablet (768px and up) */
@media (min-width: 768px) {
  :root {
    --container-padding: 2rem;
  }

  .drawing-detail-title {
    font-size: 2.5rem;
  }

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

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
  .navbar-container {
    padding: var(--spacing-lg) var(--container-padding);
  }

  .drawing-detail-title {
    font-size: 3rem;
  }

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

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

/* Mobile (max 767px) */
@media (max-width: 767px) {
  .navbar-toggle {
    display: block;
  }

  .navbar-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-lg);
  }

  .navbar-nav.active {
    display: flex;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .drawing-actions {
    flex-direction: column;
  }

  .drawing-actions .btn {
    width: 100%;
  }
}

/* Small Mobile (max 480px) */
@media (max-width: 480px) {
  .navbar-brand {
    font-size: 1.5rem;
  }

  .drawing-detail-title {
    font-size: 1.75rem;
  }

  .btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
  }
}

/* ============================================
   PRINT STYLES
   Only show the drawing image when printing
   ============================================ */
@media print {

  /* Hide everything */
  .navbar,
  .footer,
  .breadcrumb,
  .drawing-detail-header,
  .drawing-description,
  .drawing-actions,
  .btn,
  .drawing-detail-meta,
  .drawing-card-stats {
    display: none !important;
  }

  /* Reset body and page */
  /* Reset body and page */
  /* GLOBAL RESET: Zero everything for print */
  * {
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
    background: transparent !important;
    box-shadow: none !important;
    background: transparent !important;
    box-shadow: none !important;
    border-radius: 0 !important;
  }

  /* Kill all pseudo-elements (footers, icons, etc) */
  *::after,
  *::before {
    content: none !important;
    display: none !important;
  }

  /* Exceptions */
  html,
  body {
    width: 100% !important;
    height: 100% !important;
    background: white !important;
    overflow: hidden !important;
  }

  /* Make drawing container fill entire page */
  .drawing-image-container {
    display: flex !important;
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    align-items: center !important;
    justify-content: center !important;
    page-break-after: avoid !important;
    page-break-inside: avoid !important;
  }

  /* Make image fill page */
  .drawing-image-container img {
    max-width: 100% !important;
    max-height: 100% !important;
    width: auto !important;
    height: auto !important;
    display: block !important;
    object-fit: contain !important;
  }

  /* Remove all margins to hide browser header/footer */
  @page {
    margin: 0;
    size: auto;
  }

  /* Hide any content after the image */
  .drawing-image-container~* {
    display: none !important;
  }
}