/* ============================================
   OXLIVRAISON Blog Styles
   Modern, Clean, Professional Design
   ============================================ */

:root {
  --primary-blue: #0066ff;
  --primary-dark: #004ecc;
  --primary-light: #3385ff;
  --gradient-blue: linear-gradient(135deg, #0066ff 0%, #00c6ff 100%);
  --gradient-dark: linear-gradient(135deg, #004ecc 0%, #0099cc 100%);
  --accent-orange: #ffa500;
  --text-dark: #1a1a2e;
  --text-gray: #6c757d;
  --bg-light: #f8f9fa;
  --bg-white: #ffffff;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
  --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.2);
  --border-radius: 16px;
  --border-radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   Hero Section
   ============================================ */

.blog-hero {
  position: relative;
  padding: 160px 0 100px;
  background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 50%, #e8f4ff 100%);
  overflow: hidden;
}

.blog-hero::before {
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(0, 102, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 20s ease-in-out infinite;
  pointer-events: none;
}

.blog-hero::after {
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 198, 255, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 25s ease-in-out infinite reverse;
  pointer-events: none;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  33% {
    transform: translate(30px, -50px) rotate(120deg);
  }
  66% {
    transform: translate(-20px, 30px) rotate(240deg);
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(0, 102, 255, 0.1);
  border: 1px solid rgba(0, 102, 255, 0.2);
  border-radius: 50px;
  color: var(--primary-blue);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 24px;
  backdrop-filter: blur(10px);
}

.hero-badge i {
  font-size: 16px;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.2;
  margin-bottom: 16px;
  background: var(--gradient-dark);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-gray);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 600px;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: center;
}

.btn-hero-primary {
  padding: 14px 32px;
  background: var(--gradient-blue);
  border: none;
  border-radius: 50px;
  color: white;
  font-weight: 600;
  font-size: 16px;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(0, 102, 255, 0.3);
}

.btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 102, 255, 0.4);
  color: white;
}

.btn-hero-secondary {
  padding: 14px 32px;
  background: white;
  border: 2px solid rgba(0, 102, 255, 0.3);
  border-radius: 50px;
  color: var(--primary-blue);
  font-weight: 600;
  font-size: 16px;
  transition: var(--transition);
}

.btn-hero-secondary:hover {
  background: rgba(0, 102, 255, 0.05);
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

.hero-image-wrapper {
  position: relative;
  z-index: 1;
}

.hero-image {
  width: 100%;
  max-width: 550px;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-xl);
  animation: heroImageFloat 6s ease-in-out infinite;
}

@keyframes heroImageFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

.hero-shape {
  position: absolute;
  z-index: -1;
  opacity: 0.1;
}

.hero-shape-1 {
  top: -20px;
  right: -20px;
  width: 100px;
  height: 100px;
  background: var(--gradient-blue);
  border-radius: 20px;
  transform: rotate(15deg);
}

.hero-shape-2 {
  bottom: -30px;
  left: -30px;
  width: 150px;
  height: 150px;
  background: var(--accent-orange);
  border-radius: 50%;
}

/* ============================================
   Categories Section
   ============================================ */

.blog-categories {
  padding: 100px 0;
  background: var(--bg-white);
}

.category-card {
  background: white;
  border-radius: var(--border-radius);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.05);
  box-shadow: var(--shadow-sm);
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 102, 255, 0.2);
}

.category-icon {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 32px;
  transition: var(--transition);
}

.category-card:hover .category-icon {
  transform: scale(1.1) rotate(5deg);
}

.category-icon-blue {
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, rgba(0, 198, 255, 0.1) 100%);
  color: var(--primary-blue);
}

.category-icon-orange {
  background: linear-gradient(135deg, rgba(255, 165, 0, 0.1) 0%, rgba(255, 140, 0, 0.1) 100%);
  color: var(--accent-orange);
}

.category-icon-green {
  background: linear-gradient(135deg, rgba(0, 200, 100, 0.1) 0%, rgba(0, 255, 150, 0.1) 100%);
  color: #00c864;
}

.category-icon-purple {
  background: linear-gradient(135deg, rgba(138, 43, 226, 0.1) 0%, rgba(186, 85, 211, 0.1) 100%);
  color: #8a2be2;
}

.category-icon-cyan {
  background: linear-gradient(135deg, rgba(0, 206, 209, 0.1) 0%, rgba(64, 224, 208, 0.1) 100%);
  color: #00ced1;
}

.category-icon-red {
  background: linear-gradient(135deg, rgba(255, 99, 71, 0.1) 0%, rgba(255, 69, 0, 0.1) 100%);
  color: #ff6347;
}

.category-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.category-description {
  font-size: 0.95rem;
  color: var(--text-gray);
  line-height: 1.6;
  flex-grow: 1;
}

/* ============================================
   Filter Section
   ============================================ */

.blog-filter {
  padding: 60px 0;
  background: var(--bg-light);
}

.filter-wrapper {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 32px;
}

.filter-btn {
  padding: 10px 24px;
  background: white;
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 50px;
  color: var(--text-gray);
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  cursor: pointer;
}

.filter-btn:hover {
  background: rgba(0, 102, 255, 0.05);
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

.filter-btn.active {
  background: var(--gradient-blue);
  border-color: transparent;
  color: white;
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

.search-wrapper {
  position: relative;
  width: 100%;
  max-width: 400px;
}

.search-input {
  width: 100%;
  padding: 14px 100px 14px 50px;
  background: white;
  border: 1px solid rgba(0, 102, 255, 0.15);
  border-radius: 50px;
  font-size: 15px;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 8px 25px rgba(0, 102, 255, 0.1);
}

.search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary-blue);
  opacity: 0.5;
  font-size: 16px;
}

.search-btn {
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  width: 42px;
  height: 42px;
  background: var(--gradient-blue);
  border: none;
  border-radius: 50%;
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  box-shadow: 0 4px 10px rgba(0, 102, 255, 0.3);
}

.search-btn:hover {
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 6px 15px rgba(0, 102, 255, 0.4);
}

/* ============================================
   Featured Articles Section
   ============================================ */

.blog-featured {
  padding: 100px 0;
  background: var(--bg-white);
}

.article-card {
  background: white;
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.05);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.article-image-wrapper {
  position: relative;
  overflow: hidden;
  padding-top: 60%;
  aspect-ratio: 16 / 10;
}

.article-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.article-card:hover .article-image {
  transform: scale(1.1);
}

.article-category-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 16px;
  background: var(--gradient-blue);
  border-radius: 50px;
  color: white;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  z-index: 1;
}

.article-content {
  padding: 24px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.article-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-gray);
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-meta-item i {
  color: var(--primary-blue);
}

.article-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.4;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: var(--transition);
}

.article-card:hover .article-title {
  color: var(--primary-blue);
}

.article-excerpt {
  font-size: 0.95rem;
  color: var(--text-gray);
  line-height: 1.7;
  margin-bottom: 20px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.article-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 20px;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.btn-read-more {
  padding: 10px 24px;
  background: var(--gradient-blue);
  border: none;
  border-radius: 50px;
  color: white;
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-read-more:hover {
  transform: translateX(4px);
  box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
  color: white;
}

.btn-read-more i {
  transition: var(--transition);
}

.btn-read-more:hover i {
  transform: translateX(4px);
}

/* ============================================
   CTA Section
   ============================================ */

.blog-cta {
  position: relative;
  padding: 100px 0;
  background: var(--gradient-dark);
  overflow: hidden;
}

.blog-cta::before {
  position: absolute;
  top: -50%;
  left: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.blog-cta::after {
  position: absolute;
  bottom: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.cta-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: white;
  margin-bottom: 16px;
}

.cta-text {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-cta-primary {
  padding: 16px 40px;
  background: white;
  border: none;
  border-radius: 50px;
  color: var(--primary-blue);
  font-weight: 700;
  font-size: 16px;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.btn-cta-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
  color: var(--primary-blue);
}

.btn-cta-secondary {
  padding: 16px 40px;
  background: transparent;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 50px;
  color: white;
  font-weight: 700;
  font-size: 16px;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-cta-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
  color: white;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 991.98px) {
  .blog-hero {
    padding: 80px 0 60px;
  }
  
  .hero-image {
    max-width: 400px;
  }
  
  .blog-categories,
  .blog-featured {
    padding: 60px 0;
  }
  
  .blog-cta {
    padding: 60px 0;
  }
}

@media (max-width: 767.98px) {
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .btn-hero-primary,
  .btn-hero-secondary {
    width: 100%;
    text-align: center;
    justify-content: center;
  }
  
  .filter-wrapper {
    gap: 8px;
  }
  
  .filter-btn {
    padding: 8px 16px;
    font-size: 13px;
  }
  
  .search-wrapper {
    max-width: 100%;
  }
  
  .search-input {
    padding: 14px 20px 14px 48px;
    font-size: 14px;
  }
  
  .search-btn {
    padding: 8px 16px;
    font-size: 13px;
  }
  
  .cta-buttons {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn-cta-primary,
  .btn-cta-secondary {
    width: 100%;
    justify-content: center;
  }
}

/* ============================================
   Animation Utilities
   ============================================ */

.fade-in-up {
  animation: fadeInUp 0.8s ease-out forwards;
  opacity: 0;
}

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

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }
.stagger-5 { animation-delay: 0.5s; }
.stagger-6 { animation-delay: 0.6s; }

/* ============================================
   Section Title
   ============================================ */

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(0, 102, 255, 0.1);
  border: 1px solid rgba(0, 102, 255, 0.2);
  border-radius: 50px;
  color: var(--primary-blue);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-title h2 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 16px;
  background: var(--gradient-dark);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title p {
  font-size: 1.1rem;
  color: var(--text-gray);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}