/*
Theme Name: Logistics Institute
Theme URI: https://logisticsinstitute.vn
Author: Logistics Institute
Author URI: https://logisticsinstitute.vn
Description: Chuyên nghiệp cho Logistics Institute - Giải pháp Logistics AI
Version: 1.0.0
License: GPL-2.0+
Text Domain: logistics-institute
*/

:root {
  --primary: #0F1E3D;
  --primary-light: #1A2A4A;
  --secondary: #1A56DB;
  --secondary-light: #3B82F6;
  --accent: #E85D04;
  --accent-light: #F97316;
  --neutral-50: #F8F9FA;
  --neutral-100: #F3F4F6;
  --neutral-200: #E5E7EB;
  --neutral-300: #D1D5DB;
  --neutral-400: #9CA3AF;
  --neutral-500: #6B7280;
  --neutral-600: #4B5563;
  --neutral-700: #374151;
  --neutral-800: #1F2937;
  --neutral-900: #111827;
  --white: #FFFFFF;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1), 0 4px 6px rgba(0,0,0,0.05);
  --shadow-xl: 0 20px 25px rgba(0,0,0,0.1), 0 10px 10px rgba(0,0,0,0.04);
  --radius: 8px;
  --radius-lg: 16px;
  --transition: all 0.3s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--neutral-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-weight: 700;
  line-height: 1.3;
  color: var(--primary);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; margin-bottom: 1rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.25rem; }

a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  position: relative;
  display: inline-block;
  margin-bottom: 1rem;
}

.section-header h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--neutral-500);
  max-width: 600px;
  margin: 0 auto;
}

.section-dark {
  background: var(--primary);
  color: var(--white);
}

.section-dark h2, .section-dark h3 {
  color: var(--white);
}

.section-dark .section-header h2::after {
  background: var(--accent-light);
}

.section-gray {
  background: var(--neutral-50);
}

/* ====== HEADER ====== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.site-logo {
  font-family: 'Inter', sans-serif;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.site-logo .logo-icon {
  width: 40px;
  height: 40px;
  background: var(--secondary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-size: 1.25rem;
}

.site-logo .custom-logo {
  max-height: 50px;
  width: auto;
}

.site-logo span { color: var(--accent); }

.main-nav { display: flex; align-items: center; gap: 0.25rem; list-style: none; }

.main-nav a {
  display: block;
  padding: 0.5rem 1rem;
  color: var(--neutral-700);
  font-weight: 500;
  font-size: 0.938rem;
  border-radius: var(--radius);
  transition: var(--transition);
}

.main-nav a:hover,
.main-nav .current-menu-item a {
  color: var(--secondary);
  background: rgba(26,86,219,0.08);
}

.main-nav .btn-nav {
  background: var(--secondary);
  color: var(--white) !important;
  padding: 0.5rem 1.25rem;
  margin-left: 0.5rem;
}

.main-nav .btn-nav:hover {
  background: var(--secondary-light);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

/* ====== HERO SLIDER ====== */
.hero-slider {
  position: relative;
  height: 100vh;
  min-height: 600px;
  overflow: hidden;
}

.hero-slides {
  position: relative;
  height: 100%;
}

.hero-slide {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 1s ease-in-out;
  display: flex;
  align-items: center;
}

.hero-slide.active {
  opacity: 1;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(15,30,61,0.85) 0%, rgba(10,22,40,0.6) 50%, rgba(0,0,0,0.4) 100%);
  z-index: 1;
}

.hero-slide-content {
  position: relative;
  z-index: 2;
  max-width: 1200px;
  margin: 0 auto;
  padding: 100px 1.5rem 60px;
}

.hero-slide-content h1 {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1.5rem;
  line-height: 1.15;
  max-width: 700px;
}

.hero-slide-content h1 span {
  color: var(--accent-light);
  display: block;
}

.hero-slide-content p {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 2rem;
  max-width: 600px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius);
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
  font-family: inherit;
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--accent-light);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  border-color: rgba(255,255,255,0.4);
  color: var(--white);
  background: transparent;
}

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

.btn-link {
  border: none;
  background: none;
  padding: 0;
  color: var(--secondary);
  font-weight: 600;
}

.btn-link:hover { color: var(--accent); }

.hero-stats {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 3rem;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(10px);
  padding: 1.25rem 2.5rem;
  border-radius: 100px;
}

.hero-stat {
  text-align: center;
  min-width: 100px;
}

.hero-stat-number {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-light);
  font-family: 'Inter', sans-serif;
}

.hero-stat-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.7);
  margin-top: 2px;
}

.hero-dots {
  position: absolute;
  bottom: 120px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  gap: 0.75rem;
}

.hero-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255,255,255,0.4);
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.hero-dots .dot.active,
.hero-dots .dot:hover {
  background: var(--accent-light);
  border-color: var(--white);
  transform: scale(1.2);
}

.hero-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 3;
  background: rgba(255,255,255,0.15);
  border: none;
  color: var(--white);
  font-size: 2rem;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  backdrop-filter: blur(4px);
}

.hero-arrow:hover {
  background: rgba(255,255,255,0.3);
}

.hero-prev {
  left: 20px;
}

.hero-next {
  right: 20px;
}


/* ====== SERVICES ====== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--neutral-100);
  position: relative;
  overflow: hidden;
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--secondary-light);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--secondary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}

.service-card:hover::before { opacity: 1; }

.service-icon {
  width: 64px;
  height: 64px;
  background: rgba(26,86,219,0.1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.75rem;
  color: var(--secondary);
}

.service-card h3 {
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--neutral-500);
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

.service-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
  background: rgba(232,93,4,0.1);
  color: var(--accent);
  margin-bottom: 1rem;
}

/* ====== STATS ====== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-item .stat-number {
  font-size: 2.75rem;
  font-weight: 800;
  color: var(--accent-light);
  font-family: 'Inter', sans-serif;
  margin-bottom: 0.5rem;
}

.stat-item .stat-label {
  color: rgba(255,255,255,0.7);
  font-size: 1.063rem;
}

/* ====== VIDEO BREAK ====== */
.video-break {
  position: relative;
  height: 450px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.video-break video {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.video-break-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(135deg, rgba(15,30,61,0.75) 0%, rgba(10,22,40,0.65) 100%);
  z-index: 1;
}

.video-break-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 2rem;
}

.video-break-tagline {
  color: var(--white);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
  line-height: 1.3;
}

.video-break-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.vb-stat {
  text-align: center;
  min-width: 100px;
}

.vb-stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-light);
  font-family: 'Inter', sans-serif;
  margin-bottom: 0.25rem;
}

.vb-stat-label {
  display: block;
  font-size: 0.938rem;
  color: rgba(255,255,255,0.7);
}

/* ====== ABOUT ====== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-image {
  position: relative;
}

.about-image img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.about-image::after {
  content: '';
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 200px;
  height: 200px;
  border: 4px solid var(--accent);
  border-radius: var(--radius-lg);
  z-index: -1;
}

.about-features {
  list-style: none;
  margin-top: 1.5rem;
}

.about-features li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  color: var(--neutral-600);
}

.about-features li::before {
  content: '✓';
  width: 24px;
  height: 24px;
  background: rgba(26,86,219,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary);
  font-weight: 700;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ====== AI SECTION ====== */
.ai-section {
  background: linear-gradient(135deg, #0F1E3D 0%, #1A2A4A 50%, #0F1E3D 100%);
  position: relative;
  overflow: hidden;
}

.ai-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(26,86,219,0.15), transparent 70%);
}

.ai-section .section-header h2::after {
  background: var(--accent-light);
}

.ai-carousel-wrapper {
  position: relative;
  margin-top: 2rem;
  padding: 0 40px;
}

.ai-carousel-track {
  display: flex;
  gap: 1.5rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 1rem 0;
}

.ai-carousel-track::-webkit-scrollbar {
  display: none;
}

.ai-card {
  flex: 0 0 320px;
  scroll-snap-align: start;
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.ai-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255,255,255,0.2);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.ai-card-image {
  position: relative;
  height: 180px;
  overflow: hidden;
}

.ai-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.ai-card-overlay {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 60%;
  background: linear-gradient(to top, rgba(15,30,61,0.9), transparent);
}

.ai-card-body {
  padding: 1.25rem 1.5rem 1.5rem;
  position: relative;
}

.ai-card-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.ai-card-body h3 {
  color: var(--white);
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.ai-card-body p {
  color: rgba(255,255,255,0.65);
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}

.ai-card-metric {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.ai-metric-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent-light);
  font-family: 'Inter', sans-serif;
}

.ai-metric-label {
  font-size: 0.813rem;
  color: rgba(255,255,255,0.5);
}

.ai-carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--white);
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  backdrop-filter: blur(4px);
}

.ai-carousel-btn:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.3);
}

.ai-carousel-prev { left: 0; }
.ai-carousel-next { right: 0; }

.ai-carousel-dots {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.ai-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  cursor: pointer;
  transition: all 0.3s ease;
}

.ai-dot.active,
.ai-dot:hover {
  background: var(--accent-light);
  transform: scale(1.3);
}

/* ====== PARTNERS ====== */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 2rem;
  align-items: center;
}

.partner-item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  filter: grayscale(100%);
  opacity: 0.6;
}

.partner-item:hover {
  filter: grayscale(0);
  opacity: 1;
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

/* ====== NEWS ====== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.news-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.news-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.news-card-body {
  padding: 1.5rem;
}

.news-card-date {
  font-size: 0.813rem;
  color: var(--neutral-400);
  margin-bottom: 0.5rem;
}

.news-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
}

.news-card h3 a {
  color: var(--primary);
}

.news-card h3 a:hover {
  color: var(--secondary);
}

.news-card p {
  color: var(--neutral-500);
  font-size: 0.938rem;
}

/* ====== CTA ====== */
.cta-section {
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
  text-align: center;
  padding: 4rem 0;
}

.cta-section h2 {
  color: var(--white);
  margin-bottom: 1rem;
}

.cta-section p {
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  margin: 0 auto 2rem;
  font-size: 1.125rem;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-section .btn-outline {
  border-color: rgba(255,255,255,0.5);
}

/* ====== PAGE HEADER ====== */
.page-header {
  background: linear-gradient(135deg, var(--primary) 0%, #0A1628 100%);
  padding: 8rem 0 4rem;
  text-align: center;
  position: relative;
}

.page-header h1 {
  color: var(--white);
  margin-bottom: 0.75rem;
}

.page-header .breadcrumb {
  color: rgba(255,255,255,0.6);
  font-size: 0.938rem;
}

.page-header .breadcrumb a {
  color: rgba(255,255,255,0.8);
}

.page-content {
  padding: 4rem 0;
}

/* ====== ABOUT PAGE ====== */
.mission-vision {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 3rem 0;
}

.mv-card {
  padding: 2.5rem 2rem;
  border-radius: var(--radius-lg);
  text-align: center;
}

.mv-card.mission {
  background: rgba(26,86,219,0.05);
  border: 1px solid rgba(26,86,219,0.15);
}

.mv-card.vision {
  background: rgba(232,93,4,0.05);
  border: 1px solid rgba(232,93,4,0.15);
}

.mv-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.timeline {
  position: relative;
  margin: 3rem 0;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--neutral-200);
}

.timeline-item {
  position: relative;
  margin-bottom: 2rem;
  padding-left: 2rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -1.55rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background: var(--secondary);
  border-radius: 50%;
  border: 3px solid var(--white);
  box-shadow: 0 0 0 2px var(--secondary);
}

.timeline-item .year {
  font-weight: 700;
  color: var(--secondary);
  font-family: 'Inter', sans-serif;
  font-size: 1.125rem;
}

/* ====== PRICING ====== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.pricing-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--neutral-100);
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.pricing-card.featured {
  border-color: var(--secondary);
  transform: scale(1.03);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured::before {
  content: 'Phổ biến nhất';
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--accent);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: 100px;
}

.pricing-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.pricing-price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--secondary);
  font-family: 'Inter', sans-serif;
  margin-bottom: 0.25rem;
}

.pricing-price small {
  font-size: 1rem;
  font-weight: 400;
  color: var(--neutral-400);
}

.pricing-desc {
  color: var(--neutral-500);
  margin-bottom: 1.5rem;
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: 2rem;
}

.pricing-features li {
  padding: 0.5rem 0;
  color: var(--neutral-600);
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.pricing-features li::before {
  content: '✓';
  color: var(--secondary);
  font-weight: 700;
}

/* ====== FAQ ====== */
.faq-list { max-width: 800px; margin: 0 auto; }

.faq-item {
  background: var(--white);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--neutral-100);
  overflow: hidden;
}

.faq-question {
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  color: var(--primary);
}

.faq-question:hover { color: var(--secondary); }

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--neutral-400);
  transition: var(--transition);
}

.faq-item.active .faq-question::after {
  content: '−';
  color: var(--secondary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-answer-inner {
  padding: 0 1.5rem 1.25rem;
  color: var(--neutral-500);
  line-height: 1.7;
}

/* ====== CONTACT ====== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  background: rgba(26,86,219,0.1);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--secondary);
  flex-shrink: 0;
}

.contact-info-text h4 {
  margin-bottom: 0.25rem;
}

.contact-info-text p {
  color: var(--neutral-500);
}

.contact-form {
  background: var(--white);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  color: var(--neutral-700);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--neutral-200);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
  background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: 0 0 0 3px rgba(26,86,219,0.1);
}

.form-group textarea { resize: vertical; min-height: 140px; }

.map-container {
  margin-top: 3rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.map-container iframe {
  width: 100%;
  height: 400px;
  border: none;
}

/* ====== POLICY PAGE ====== */
.policy-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 3rem;
}

.policy-sidebar {
  position: sticky;
  top: 100px;
}

.policy-menu {
  list-style: none;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.policy-menu li a {
  display: block;
  padding: 0.875rem 1.25rem;
  color: var(--neutral-600);
  border-left: 3px solid transparent;
  font-weight: 500;
  transition: var(--transition);
}

.policy-menu li a:hover,
.policy-menu li a.active {
  color: var(--secondary);
  background: rgba(26,86,219,0.05);
  border-left-color: var(--secondary);
}

.policy-content h2 {
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--neutral-100);
}

.policy-content h2:first-child {
  margin-top: 0;
}

.policy-content p {
  margin-bottom: 1rem;
  color: var(--neutral-600);
  line-height: 1.8;
}

.policy-content ul {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.policy-content ul li {
  margin-bottom: 0.5rem;
  color: var(--neutral-600);
}

/* ====== SINGLE SERVICE ====== */
.service-detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3rem;
}

.service-detail-content h2 {
  margin-top: 2rem;
}

.service-detail-content p {
  margin-bottom: 1.25rem;
  line-height: 1.8;
  color: var(--neutral-600);
}

.service-detail-content ul {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.service-detail-content ul li {
  margin-bottom: 0.5rem;
  color: var(--neutral-600);
}

.service-detail-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2rem;
  aspect-ratio: 16 / 9;
}

.service-detail-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.service-sidebar {
  position: sticky;
  top: 100px;
}

.service-sidebar .sidebar-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}

.service-sidebar h4 {
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--neutral-100);
}

.service-sidebar ul {
  list-style: none;
}

.service-sidebar ul li {
  margin-bottom: 0.5rem;
}

.service-sidebar ul li a {
  display: block;
  padding: 0.5rem 0.75rem;
  color: var(--neutral-600);
  border-radius: var(--radius);
  transition: var(--transition);
}

.service-sidebar ul li a:hover {
  background: rgba(26,86,219,0.05);
  color: var(--secondary);
}

.sidebar-cta {
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  color: var(--white);
  text-align: center;
}

.sidebar-cta h4 {
  color: var(--white);
  border-color: rgba(255,255,255,0.2);
}

.sidebar-cta p {
  color: rgba(255,255,255,0.8);
  margin-bottom: 1rem;
}

/* ====== FOOTER ====== */
.site-footer {
  background: var(--primary);
  color: rgba(255,255,255,0.7);
  padding: 4rem 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-col h4 {
  color: var(--white);
  margin-bottom: 1.25rem;
  font-size: 1.125rem;
}

.footer-col p {
  line-height: 1.8;
  font-size: 0.938rem;
  margin-bottom: 1rem;
}

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

.footer-col ul li { margin-bottom: 0.625rem; }

.footer-col ul li a {
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
  font-size: 0.938rem;
}

.footer-col ul li a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.footer-social a {
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--secondary);
  color: var(--white);
}

.footer-bottom {
  text-align: center;
  padding: 1.5rem 0;
  font-size: 0.875rem;
}

/* ====== RESPONSIVE ====== */
@media (max-width: 1024px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }

  .hero-slide-content h1 { font-size: 2.5rem; }

  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .video-break { height: 380px; }
  .video-break-tagline { font-size: 1.5rem; margin-bottom: 2rem; }
  .video-break-stats { gap: 2rem; }
  .vb-stat-number { font-size: 2rem; }
  .vb-stat-label { font-size: 0.813rem; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto; }
  .pricing-card.featured { transform: none; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
  .policy-layout { grid-template-columns: 1fr; }
  .policy-sidebar { position: static; }
  .service-detail-layout { grid-template-columns: 1fr; }
  .service-sidebar { position: static; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .hamburger { display: flex; }

  .main-nav {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
    gap: 0;
  }

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

  .main-nav a { padding: 0.75rem 1rem; }

  .hero-slide-content h1 { font-size: 2rem; }
  .hero-slide-content p { margin: 0 auto 1.5rem; max-width: 100%; }
  .hero-buttons { justify-content: center; }
  .hero-stats { gap: 1.5rem; padding: 1rem 1.5rem; }
  .hero-stat-number { font-size: 1.25rem; }
  .hero-dots { bottom: 110px; }
  .hero-arrow { width: 36px; height: 36px; font-size: 1.5rem; }
  .hero-prev { left: 10px; }
  .hero-next { right: 10px; }

  .about-grid { grid-template-columns: 1fr; }
  .mission-vision { grid-template-columns: 1fr; }
  .ai-card { flex: 0 0 280px; }
  .ai-carousel-wrapper { padding: 0 30px; }

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

  .section { padding: 3rem 0; }

  .video-break { height: 340px; }
  .video-break-tagline { font-size: 1.25rem; margin-bottom: 1.5rem; }
  .video-break-stats { gap: 1.25rem; }
  .vb-stat-number { font-size: 1.5rem; }
  .vb-stat-label { font-size: 0.75rem; }
}