/* ====================================
   Bootstrap 5 + CSS3 Modern Enhancements
   chonjob.com - Job Board
   ==================================== */

/* ===== CSS Variables (CSS3 Custom Properties) ===== */
:root {
  --primary-color: #007bff;
  --secondary-color: #6c757d;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --info-color: #17a2b8;
  --light-color: #f8f9fa;
  --dark-color: #343a40;
  
  --border-radius: 0.375rem;
  --border-radius-lg: 0.5rem;
  --border-radius-sm: 0.25rem;
  
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease-in-out;
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15), 0 5px 10px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2), 0 10px 20px rgba(0, 0, 0, 0.15);
  
  --font-family-base: 'Anuphan', 'Sarabun', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ===== Base Styles ===== */
html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-base);
  transition: var(--transition-base);
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.4;
}

.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== Legacy Spacing Classes (Bootstrap 3 compatibility) ===== */
.pt-100 {
  padding-top: 100px !important;
}

.pt-5 {
  padding-top: 3rem !important;
}

.pb-60 {
  padding-bottom: 60px !important;
}

.pb-4 {
  padding-bottom: 1.5rem !important;
}

.pb-5 {
  padding-bottom: 3rem !important;
}

.mb-10 {
  margin-bottom: 10px !important;
}

.mb-2 {
  margin-bottom: 0.5rem !important;
}

.my-3 {
  margin-top: 1rem !important;
  margin-bottom: 1rem !important;
}

.my-4 {
  margin-top: 1.5rem !important;
  margin-bottom: 1.5rem !important;
}

/* ===== Modern Card Styles ===== */
.card {
  border: 1px solid rgba(0, 0, 0, 0.08);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  overflow: hidden;
  background: white;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.card-inner {
  padding: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-start;
}

/* ===== Job Card Specific Styles ===== */
.job-image-container {
  position: relative;
  flex-shrink: 0;
}

.job-image {
  border-radius: var(--border-radius);
  object-fit: cover;
  transition: var(--transition-base);
}

.job-image:hover {
  transform: scale(1.05);
}

.company-logo {
  position: absolute;
  bottom: -10px;
  right: -10px;
  border: 2px solid white;
  border-radius: 50%;
  box-shadow: var(--shadow-md);
}

.job-status {
  position: absolute;
  top: 5px;
  left: 5px;
  background: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: var(--border-radius-sm);
  font-size: 0.75rem;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

.job-description {
  flex: 1;
  min-width: 0;
}

.job-description .name {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--dark-color);
  transition: var(--transition-fast);
}

.card:hover .name {
  color: var(--primary-color);
}

.job-description .description {
  font-size: 0.875rem;
  color: var(--secondary-color);
  margin-bottom: 0.25rem;
}

.info-set {
  margin-top: 0.75rem;
}

.info {
  font-size: 0.875rem;
  color: var(--dark-color);
}

.info .icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-color);
}

/* ===== Button Styles ===== */
.btn {
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: var(--transition-base);
  border: none;
  padding: 0.5rem 1.5rem;
}

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

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

.loadmore-btn {
  background: linear-gradient(135deg, var(--primary-color), var(--info-color));
  color: white;
  padding: 0.75rem 2rem;
  border-radius: var(--border-radius-lg);
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  transition: var(--transition-base);
  box-shadow: var(--shadow-md);
}

.loadmore-btn:hover {
  background: linear-gradient(135deg, var(--info-color), var(--primary-color));
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  color: white;
}

/* ===== Sidebar Styles ===== */
.sidebar {
  position: sticky;
  top: 20px;
}

.single-slidebar {
  background: white;
  border-radius: var(--border-radius-lg);
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

.single-slidebar:hover {
  box-shadow: var(--shadow-md);
}

.cat-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.cat-list li {
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition-fast);
}

.cat-list li:last-child {
  border-bottom: none;
}

.cat-list li:hover {
  background: var(--light-color);
  padding-left: 0.5rem;
}

.cat-list a {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  text-decoration: none;
  color: var(--dark-color);
  transition: var(--transition-fast);
}

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

.cat-list .badge {
  font-weight: 600;
  padding: 0.35em 0.65em;
}

/* ===== Post List Styles ===== */
.post-list {
  background: white;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 2rem 1rem;
}

.single-post {
  background: white;
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
}

.single-post:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(5px);
}

/* ===== Image Styles ===== */
.img-fluid {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
}

.rounded {
  border-radius: var(--border-radius) !important;
}

.rounded-circle {
  border-radius: 50% !important;
}

/* ===== Animation Classes ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

.animate-fade-in {
  animation: fadeIn 0.6s ease-out;
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

.animate-slide-in-left {
  animation: slideInLeft 0.6s ease-out;
}

.animate-slide-in-right {
  animation: slideInRight 0.6s ease-out;
}

/* ===== Section Styles ===== */
.popular-post-area,
.post-area {
  position: relative;
}

.section-gap {
  padding: 50px 0;
}

/* ===== Modern Grid Enhancements ===== */
@supports (display: grid) {
  .grid-auto-fit {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
  }
}

/* ===== Backdrop Filter (Modern Browsers) ===== */
@supports (backdrop-filter: blur(10px)) or (-webkit-backdrop-filter: blur(10px)) {
  .glass-effect {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px) saturate(180%);
    -webkit-backdrop-filter: blur(10px) saturate(180%);
  }
}

/* ===== Responsive Utilities ===== */
@media (max-width: 576px) {
  .card-inner {
    flex-direction: column;
  }
  
  .job-image-container {
    width: 100%;
  }
  
  .job-image {
    width: 100%;
    height: auto;
  }
}

/* ===== Dark Mode Support (Future Enhancement) ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --dark-color: #f8f9fa;
    --light-color: #343a40;
  }
  
  /* Uncomment when implementing dark mode */
  /*
  body {
    background-color: #1a1a1a;
    color: #f8f9fa;
  }
  
  .card,
  .post-list,
  .single-slidebar,
  .single-post {
    background-color: #2d2d2d;
    color: #f8f9fa;
  }
  */
}

/* ===== Print Styles ===== */
@media print {
  .sidebar,
  .loadmore-btn {
    display: none !important;
  }
  
  .card,
  .single-post {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    page-break-inside: avoid;
  }
}

/* ===== 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-width: 0;
}

/* Focus visible for keyboard navigation */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
  border-radius: var(--border-radius-sm);
}

/* ===== Performance Optimizations ===== */
.card,
.btn,
.single-post,
.job-image {
  will-change: transform;
}

/* Use GPU acceleration for animations */
.animate-fade-in,
.animate-fade-in-up,
.animate-slide-in-left,
.animate-slide-in-right {
  transform: translate3d(0, 0, 0);
}

/* ===== Custom Scrollbar (Webkit) ===== */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--light-color);
  border-radius: var(--border-radius);
}

::-webkit-scrollbar-thumb {
  background: var(--secondary-color);
  border-radius: var(--border-radius);
  transition: var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-color);
}

/* ===== Legacy Clearfix Support ===== */
.clearfix::after {
  content: "";
  display: table;
  clear: both;
}

/* ===== Float Utilities (Bootstrap 5) ===== */
.float-start {
  float: left !important;
}

.float-end {
  float: right !important;
}

.float-none {
  float: none !important;
}

/* ===== Responsive Embed ===== */
.ratio {
  position: relative;
  width: 100%;
}

.ratio::before {
  display: block;
  padding-top: var(--bs-aspect-ratio);
  content: "";
}

.ratio > * {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}