/* ==========================================================================
   CẢNH QUAN ĐẠI NGÀN - LUXURY DESIGN SYSTEM & CORE STYLES
   Style: Modern Eco-Luxury (Hiện đại - Sinh thái Sang trọng)
   Màu chủ đạo: Trắng (#FFFFFF) & Xanh lục bảo (#1E7C48, #0E4325)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&family=Outfit:wght@400;500;600;700;800&display=swap');

/* --- 1. CSS VARIABLES (DESIGN TOKENS) --- */
:root {
  /* Brand Green Palette */
  --primary: #1E7C48;
  --primary-dark: #0E4325;
  --primary-deep: #082816;
  --primary-light: #2ECC71;
  --primary-tint: #EBF7EE;
  --primary-mint: #D1FAE5;
  --primary-gradient: linear-gradient(135deg, #0E4325 0%, #1E7C48 50%, #2ECC71 100%);
  --hero-gradient: linear-gradient(180deg, rgba(14, 67, 37, 0.75) 0%, rgba(8, 40, 22, 0.88) 100%);
  
  /* Accent & Status Colors */
  --accent-gold: #D97706;
  --accent-amber: #F59E0B;
  --accent-gold-light: #FEF3C7;
  --success: #10B981;
  --info: #0284C7;
  
  /* Neutral Colors */
  --white: #FFFFFF;
  --bg-main: #FFFFFF;
  --bg-alt: #F8FAF9;
  --bg-soft: #F1F5F3;
  --bg-dark: #0B1E13;
  --text-main: #1A2E22;
  --text-body: #374151;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --border-light: #E5E7EB;
  --border-green: #D1E7DD;
  
  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  /* Elevation Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 8px rgba(14, 67, 37, 0.06);
  --shadow-md: 0 8px 24px rgba(14, 67, 37, 0.08);
  --shadow-lg: 0 16px 36px rgba(14, 67, 37, 0.12);
  --shadow-xl: 0 24px 48px rgba(14, 67, 37, 0.16);
  --shadow-glow: 0 0 25px rgba(46, 204, 113, 0.35);
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-bounce: 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  
  /* Layout */
  --container-max: 1240px;
  --header-height: 80px;
  --topbar-height: 40px;
}

/* --- 2. BASE & RESET --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-body);
  color: var(--text-body);
  background-color: var(--bg-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
}

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
  background: none;
}

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.015em;
}

/* --- 3. UTILITY CLASSES --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

.section {
  padding: 85px 0;
  position: relative;
}

.section-bg-alt {
  background-color: var(--bg-alt);
}

.section-bg-dark {
  background-color: var(--bg-dark);
  color: #E2E8F0;
}

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

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 55px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-tint);
  color: var(--primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
  border: 1px solid var(--border-green);
}

.section-tag-dark {
  background: rgba(46, 204, 113, 0.15);
  color: #48C774;
  border-color: rgba(46, 204, 113, 0.3);
}

.section-title {
  font-size: clamp(2rem, 3.2vw, 2.5rem);
  letter-spacing: -0.5px;
  margin-bottom: 16px;
}

.section-title span {
  color: var(--primary);
  position: relative;
}

.section-title span::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 2px;
  width: 100%;
  height: 4px;
  background: rgba(46, 204, 113, 0.35);
  border-radius: 2px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.section-bg-dark .section-subtitle {
  color: #94A3B8;
}

/* Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  white-space: nowrap;
  user-select: none;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--primary-gradient);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(30, 124, 72, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(30, 124, 72, 0.45);
  color: var(--white);
}

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

.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(30, 124, 72, 0.25);
}

.btn-white {
  background: var(--white);
  color: var(--primary-dark);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.btn-white:hover {
  background: var(--primary-tint);
  color: var(--primary-dark);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

/* --- 4. TOPBAR --- */
.topbar {
  background-color: var(--primary-dark);
  color: #E2E8F0;
  font-size: 0.85rem;
  height: var(--topbar-height);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.topbar-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--topbar-height);
}

.topbar-info {
  display: flex;
  align-items: center;
  gap: 24px;
}

.topbar-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #CBD5E1;
}

.topbar-item svg {
  color: var(--primary-light);
  flex-shrink: 0;
}

.topbar-item a:hover {
  color: var(--primary-light);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 18px;
}

.topbar-badge {
  background: rgba(46, 204, 113, 0.2);
  color: #86EFAC;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid rgba(46, 204, 113, 0.3);
}

/* --- 5. MAIN HEADER & NAVBAR --- */
.header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  transition: background-color var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  height: var(--header-height);
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: 0 6px 25px rgba(14, 67, 37, 0.1);
  border-bottom: 1px solid rgba(14, 67, 37, 0.08);
}

.header-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo-container {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 48px;
  width: auto;
  transition: transform var(--transition-fast);
}

.logo-img:hover {
  transform: scale(1.02);
}

/* Nav Menu Desktop */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-main);
  position: relative;
  padding: 8px 0;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: all var(--transition-fast);
  transform: translateX(-50%);
  border-radius: 2px;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 42px;
  height: 42px;
  padding: 8px;
  border-radius: var(--radius-sm);
  background: var(--primary-tint);
  cursor: pointer;
  border: 1px solid var(--border-green);
}

.mobile-toggle span {
  display: block;
  height: 2.5px;
  width: 100%;
  background-color: var(--primary-dark);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.mobile-toggle.active span:nth-child(1) {
  transform: translateY(8.5px) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-8.5px) rotate(-45deg);
}

/* Mobile Navigation Drawer */
.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(14, 67, 37, 0.5);
  backdrop-filter: blur(6px);
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.mobile-nav-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: -340px;
  width: 320px;
  height: 100vh;
  background: var(--white);
  z-index: 1100;
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-xl);
  transition: right var(--transition-normal);
  overflow-y: auto;
}

.mobile-nav-drawer.open {
  right: 0;
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-light);
}

.mobile-nav-close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--text-main);
  font-size: 1.5rem;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 25px 0;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background: var(--primary-tint);
  color: var(--primary);
}

.mobile-nav-footer {
  padding-top: 20px;
  border-top: 1px solid var(--border-light);
}

.mobile-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

/* --- 6. HERO SECTION & SLIDER --- */
.hero {
  position: relative;
  min-height: 640px;
  overflow: hidden;
  background-color: var(--primary-deep);
}

.hero-slider {
  position: relative;
  width: 100%;
  height: 640px;
  cursor: grab;
  touch-action: pan-y;
  user-select: none;
}

.hero-slider.is-dragging {
  cursor: grabbing;
}

.hero-slider a,
.hero-slider button {
  cursor: pointer;
}

.hero-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease-in-out, transform 0.8s ease-in-out;
  transform: scale(1.04);
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.hero-slide-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.hero-slide-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(8, 40, 22, 0.92) 0%, rgba(14, 67, 37, 0.72) 60%, rgba(0, 0, 0, 0.45) 100%);
}

.hero-content {
  position: relative;
  z-index: 10;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 700px;
  color: var(--white);
  padding: 40px 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(46, 204, 113, 0.2);
  border: 1px solid rgba(46, 204, 113, 0.4);
  color: #86EFAC;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
  width: fit-content;
}

.hero-title {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  line-height: 1.15;
  margin-bottom: 18px;
  color: var(--white);
}

.hero-title span {
  color: #48C774;
}

.hero-desc {
  font-size: clamp(1rem, 1.8vw, 1.15rem);
  line-height: 1.6;
  color: #E2E8F0;
  margin-bottom: 30px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Slider Controls */
.hero-controls {
  position: absolute;
  bottom: 35px;
  right: 20px;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 12px;
}

.hero-arrow {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.3);
  transition: all var(--transition-fast);
}

.hero-arrow:hover {
  background: var(--primary-light);
  color: var(--primary-deep);
  transform: scale(1.08);
}

.hero-dots {
  position: absolute;
  bottom: 45px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  display: flex;
  gap: 10px;
}

.hero-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.hero-dot.active {
  width: 32px;
  background: #48C774;
}

/* --- 7. STATS STRIP --- */
.stats-strip {
  background: var(--white);
  padding: 30px 0;
  box-shadow: var(--shadow-md);
  margin-top: -45px;
  position: relative;
  z-index: 30;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 0 15px;
  border-right: 1px solid var(--border-light);
}

.stat-card:last-child {
  border-right: none;
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--primary-tint);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* --- 8. BEFORE / AFTER COMPARISON SECTION --- */
.before-after-section {
  background: var(--bg-alt);
}

.comparison-wrapper {
  max-width: 960px;
  margin: 0 auto;
  background: var(--white);
  padding: 20px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
}

.comparison-slider-container {
  position: relative;
  width: 100%;
  height: 500px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-y;
  cursor: ew-resize;
}

.comparison-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
}

.comparison-before {
  position: absolute;
  top: 0;
  left: 0;
  width: 50%;
  height: 100%;
  overflow: hidden;
  z-index: 2;
  pointer-events: none;
}

.comparison-before .comparison-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.comparison-badge {
  position: absolute;
  top: 20px;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 8;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.badge-before {
  left: 20px;
  background: rgba(220, 38, 38, 0.92);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.badge-after {
  right: 20px;
  background: rgba(16, 185, 129, 0.92);
  color: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.comparison-handle {
  position: absolute;
  top: 0;
  left: 50%;
  width: 3px;
  height: 100%;
  background: var(--white);
  z-index: 10;
  transform: translateX(-50%);
  cursor: ew-resize;
  box-shadow: 0 0 16px rgba(0, 0, 0, 0.6);
  pointer-events: none;
}

.comparison-handle-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.35), 0 0 0 4px var(--white);
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.comparison-slider-container:hover .comparison-handle-btn {
  transform: translate(-50%, -50%) scale(1.08);
  background: var(--primary-dark);
}

.comparison-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 20px;
  padding: 10px 15px;
}

.comparison-hint {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* --- 9. 5-STEP STANDARD PROCESS SECTION --- */
.process-section {
  position: relative;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
}

.process-grid::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 50px;
  right: 50px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
  z-index: 1;
  opacity: 0.3;
}

.process-card {
  position: relative;
  z-index: 2;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 30px 20px 24px;
  text-align: center;
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-sm);
}

.process-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-green);
}

.process-step-num {
  width: 48px;
  height: 48px;
  margin: 0 auto 18px auto;
  border-radius: 50%;
  background: var(--white);
  border: 3px solid var(--primary);
  color: var(--primary-dark);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.process-card:hover .process-step-num {
  background: var(--primary);
  color: var(--white);
  transform: scale(1.1);
}

.process-card-title {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.process-card-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --- 10. ABOUT US & VALUE PROPOSITIONS (USP) --- */
.about-section {
  overflow: hidden;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 55px;
  align-items: center;
}

.about-img-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.about-img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.about-img-wrap:hover .about-img {
  transform: scale(1.03);
}

.about-badge-float {
  position: absolute;
  bottom: 25px;
  left: 25px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  padding: 16px 22px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 14px;
  border: 1px solid rgba(46, 204, 113, 0.3);
}

.about-badge-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-tint);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.about-badge-text strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--primary-dark);
}

.about-badge-text span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.about-content-title {
  font-size: 2.2rem;
  line-height: 1.2;
  margin-bottom: 18px;
}

.about-lead {
  font-size: 1.1rem;
  color: var(--primary-dark);
  font-weight: 500;
  margin-bottom: 20px;
  line-height: 1.6;
}

.usp-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 25px 0 35px 0;
}

.usp-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.usp-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-tint);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
  font-weight: 700;
}

.usp-text strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text-main);
  margin-bottom: 2px;
}

.usp-text p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* --- 11. FEATURED SERVICES SECTION --- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-green);
}

.service-img-wrap {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.service-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.service-card:hover .service-img {
  transform: scale(1.06);
}

.service-tag {
  position: absolute;
  top: 15px;
  right: 15px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(6px);
  color: var(--primary-dark);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.service-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.service-title {
  font-size: 1.25rem;
  margin-bottom: 10px;
  transition: color var(--transition-fast);
}

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

.service-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 18px;
  flex-grow: 1;
}

.service-features {
  margin-bottom: 20px;
  padding-top: 15px;
  border-top: 1px dashed var(--border-light);
}

.service-feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-body);
  margin-bottom: 6px;
}

.service-feature-item svg {
  color: var(--primary);
  flex-shrink: 0;
}

.service-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.service-link {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition-fast);
}

.service-card:hover .service-link {
  gap: 10px;
}

/* --- 12. QUICK COST ESTIMATOR WIDGET --- */
.estimator-section {
  background: var(--primary-deep);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.estimator-section .section-title {
  color: var(--white);
}

.estimator-section .section-title span {
  color: #4ADE80;
  text-shadow: 0 0 25px rgba(74, 222, 128, 0.4);
}

.estimator-section .section-title span::after {
  background: rgba(74, 222, 128, 0.5);
}

.estimator-section .section-subtitle {
  color: #E2E8F0;
  opacity: 0.95;
}

.estimator-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(46, 204, 113, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.estimator-box {
  background: rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-xl);
}

.estimator-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
}

.estimator-form-title {
  font-size: 1.35rem;
  color: var(--white);
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 22px;
}

.form-label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: #CBD5E1;
  margin-bottom: 10px;
}

/* Property Selection Type Cards */
.prop-types-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.prop-type-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 14px 10px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.prop-type-card:hover {
  background: rgba(255, 255, 255, 0.12);
}

.prop-type-card.active {
  background: var(--primary);
  border-color: #48C774;
  box-shadow: 0 0 15px rgba(46, 204, 113, 0.4);
}

.prop-type-icon {
  font-size: 1.5rem;
  margin-bottom: 6px;
  display: block;
}

.prop-type-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--white);
}

/* Area Range Slider */
.range-slider-wrap {
  margin-top: 10px;
}

.range-val-display {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: #E2E8F0;
  margin-bottom: 8px;
}

.range-val-badge {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: #86EFAC;
}

input[type=range] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.2);
  outline: none;
}

input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #48C774;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  border: 2px solid var(--white);
  transition: transform var(--transition-fast);
}

input[type=range]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

/* Form Select / Inputs */
.form-select, .form-input {
  width: 100%;
  padding: 13px 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-md);
  color: var(--white);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-select option {
  background: var(--primary-deep);
  color: var(--white);
}

.form-select:focus, .form-input:focus {
  border-color: #48C774;
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 0 3px rgba(72, 199, 116, 0.25);
}

/* Estimator Result Card */
.estimator-result-card {
  background: var(--white);
  color: var(--text-main);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-xl);
}

.result-badge {
  display: inline-block;
  background: var(--primary-tint);
  color: var(--primary);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 15px;
}

.result-price-box {
  margin: 15px 0 25px 0;
  padding: 18px;
  background: var(--bg-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  text-align: center;
}

.result-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.result-price {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary-dark);
}

.result-unit {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.result-perks {
  margin-bottom: 25px;
}

.result-perk-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-body);
  margin-bottom: 8px;
}

.result-perk-item svg {
  color: var(--primary);
  flex-shrink: 0;
}

/* --- 13. GALLERY / PROJECTS SECTION --- */
.gallery-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.gallery-tab {
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--white);
  color: var(--text-body);
  border: 1px solid var(--border-light);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.gallery-tab:hover,
.gallery-tab.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
  box-shadow: 0 4px 14px rgba(30, 124, 72, 0.25);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 320px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
}

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

.gallery-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.gallery-item:hover .gallery-img {
  transform: scale(1.08);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(8, 40, 22, 0.95) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  color: var(--white);
  opacity: 0.95;
  transition: all var(--transition-fast);
}

.gallery-category {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #86EFAC;
  margin-bottom: 4px;
}

.gallery-title {
  font-size: 1.2rem;
  color: var(--white);
  margin-bottom: 6px;
}

.gallery-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.8rem;
  color: #CBD5E1;
}

/* --- 13. LIGHTBOX PROJECT MULTI-IMAGE SLIDER MODAL --- */
.lightbox-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lightbox-modal.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.lightbox-content {
  position: relative;
  max-width: 960px;
  width: 100%;
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  max-height: 92vh;
  animation: zoomInModal 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes zoomInModal {
  from { transform: scale(0.94); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.lightbox-slider-wrap {
  position: relative;
  height: 480px;
  background: #06150C;
  overflow: hidden;
  user-select: none;
  touch-action: pan-y;
  cursor: grab;
}

.lightbox-slider-wrap.is-dragging {
  cursor: grabbing;
}

.lightbox-slides-container {
  width: 100%;
  height: 100%;
  position: relative;
}

.lightbox-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease-in-out, transform 0.4s ease-in-out;
  transform: scale(1.02);
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-slide.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

.lightbox-slide-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-user-drag: none;
}

/* Counter Badge */
.lightbox-counter {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  z-index: 15;
  border: 1px solid rgba(255, 255, 255, 0.2);
  letter-spacing: 0.5px;
}

/* Close Button */
.lightbox-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 20;
  font-size: 1.25rem;
  line-height: 1;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all var(--transition-fast);
}

.lightbox-close:hover {
  background: #EF4444;
  border-color: #EF4444;
  transform: scale(1.08);
}

/* Arrow Navigation Buttons */
.lightbox-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(8px);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 15;
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.lightbox-nav-btn:hover {
  background: var(--primary);
  transform: translateY(-50%) scale(1.08);
}

.lightbox-nav-btn.prev {
  left: 12px;
}

.lightbox-nav-btn.next {
  right: 12px;
}

/* Thumbnail Navigation Strip */
.lightbox-thumbnails {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 15;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(10px);
  padding: 4px 8px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.lightbox-thumb {
  width: 36px;
  height: 25px;
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  opacity: 0.5;
  border: 1.5px solid transparent;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.lightbox-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lightbox-thumb:hover {
  opacity: 0.85;
}

.lightbox-thumb.active {
  opacity: 1;
  border-color: #48C774;
  transform: scale(1.06);
  box-shadow: 0 0 8px rgba(72, 199, 116, 0.6);
}

/* Modal Body */
.lightbox-body {
  padding: 22px 28px;
  background: var(--white);
  overflow-y: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 25px;
}

.lightbox-info {
  flex: 1;
}

.lightbox-cat {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--primary);
  margin-bottom: 4px;
}

.lightbox-title {
  font-size: 1.35rem;
  color: var(--primary-dark);
  margin-bottom: 6px;
}

.lightbox-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.lightbox-desc {
  font-size: 0.88rem;
  color: var(--text-body);
  line-height: 1.55;
}

.lightbox-cta {
  flex-shrink: 0;
}

/* --- 14. TESTIMONIALS & TRUST SECTION --- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.testimonial-stars {
  color: var(--accent-amber);
  margin-bottom: 16px;
  display: flex;
  gap: 4px;
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--text-body);
  line-height: 1.65;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.author-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-tint);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-family: var(--font-heading);
}

.author-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-main);
}

.author-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- 15. BLOG & NEWS SECTION --- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.blog-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--border-green);
}

.blog-img-wrap {
  height: 200px;
  overflow: hidden;
  position: relative;
}

.blog-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.blog-card:hover .blog-img {
  transform: scale(1.06);
}

.blog-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.blog-title {
  font-size: 1.15rem;
  line-height: 1.35;
  margin-bottom: 12px;
  transition: color var(--transition-fast);
}

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

.blog-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 18px;
  flex-grow: 1;
}

/* --- 16. FOOTER --- */
.footer {
  background-color: var(--bg-dark);
  color: #94A3B8;
  padding: 70px 0 30px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-logo-img {
  height: 48px;
  width: auto;
  margin-bottom: 18px;
}

.footer-about-text {
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.footer-socials {
  display: flex;
  gap: 12px;
}

.footer-social-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: #E2E8F0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-weight: 700;
}

.footer-social-btn:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

.footer-col-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: var(--primary-light);
  border-radius: 2px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  font-size: 0.9rem;
  color: #94A3B8;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-link:hover {
  color: #48C774;
  transform: translateX(4px);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.88rem;
  margin-bottom: 14px;
}

.footer-contact-item svg {
  color: var(--primary-light);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
}

/* --- 17. FLOATING CTA BAR (HOTLINE / ZALO / SURVEY / TOP) --- */
.floating-cta-bar {
  position: fixed;
  bottom: 30px;
  right: 25px;
  z-index: 1500;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}

.floating-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.88rem;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
  transition: all var(--transition-normal);
  color: var(--white);
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  cursor: pointer;
}

.floating-btn:hover {
  transform: translateY(-2px) scale(1.04);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.floating-btn-survey {
  background: linear-gradient(135deg, #10B981 0%, #047857 100%);
  animation: pulseEmerald 2.5s infinite;
}

@keyframes pulseEmerald {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 12px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.floating-btn-phone {
  background: linear-gradient(135deg, #22C55E 0%, #15803D 100%);
}

.floating-btn-zalo {
  background: #0068FF;
}

.floating-btn-top {
  width: 42px;
  height: 44px;
  border-radius: 50%;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--white);
  color: var(--primary-dark);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.floating-btn-top.visible {
  opacity: 1;
  visibility: visible;
}

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

/* --- 18. TOAST NOTIFICATION --- */
.toast-container {
  position: fixed;
  top: 25px;
  right: 25px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background: var(--white);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: var(--shadow-xl);
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 380px;
  animation: slideInRight 0.4s ease forwards;
}

@keyframes slideInRight {
  from { transform: translateX(100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.toast-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-tint);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.toast-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 2px;
}

.toast-message {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* --- 19. RESPONSIVE GRID LAYOUT SYSTEM CLASSES --- */
.contact-page-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 45px;
  align-items: start;
}

.vision-mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-bottom: 50px;
}

.core-values-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item.active {
  border-color: var(--border-green);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  padding: 18px 24px;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-item.active .faq-question {
  color: var(--primary-dark);
}

.faq-chevron {
  font-size: 1rem;
  color: var(--primary);
  transition: transform var(--transition-normal);
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 24px 20px 24px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.65;
  display: none;
}

.faq-item.active .faq-answer {
  display: block;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Lightbox & Booking Modal */
.quote-modal {
  position: fixed;
  inset: 0;
  background: rgba(14, 67, 37, 0.6);
  backdrop-filter: blur(8px);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.quote-modal.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

/* --- 20. SERVICE DETAIL SINGLE PAGE STYLES --- */
.service-detail-hero {
  position: relative;
  padding: 85px 0 65px 0;
  background: linear-gradient(135deg, #082816 0%, #0E4325 50%, #1E7C48 100%);
  color: var(--white);
  overflow: hidden;
}

.service-detail-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(46, 204, 113, 0.18) 0%, transparent 60%);
  pointer-events: none;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: #CBD5E1;
  margin-bottom: 20px;
}

.breadcrumb-nav a {
  color: #86EFAC;
}

.breadcrumb-nav a:hover {
  text-decoration: underline;
}

.service-tabs-bar {
  background: var(--white);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
  position: sticky;
  top: var(--header-height);
  z-index: 900;
  overflow-x: auto;
  white-space: nowrap;
}

.service-tabs-list {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
}

.service-tab-btn {
  padding: 10px 18px;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-body);
  background: var(--bg-soft);
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.service-tab-btn:hover {
  background: var(--primary-tint);
  color: var(--primary-dark);
}

.service-tab-btn.active {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(30, 124, 72, 0.3);
}

.service-detail-layout {
  display: grid;
  grid-template-columns: 1.8fr 1.1fr;
  gap: 45px;
  align-items: start;
}

.service-main-content {
  display: flex;
  flex-direction: column;
  gap: 45px;
}

.service-feature-box {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 35px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.service-timeline {
  display: flex;
  flex-direction: column;
  gap: 20px;
  position: relative;
  margin-top: 25px;
}

.service-timeline::before {
  content: '';
  position: absolute;
  left: 20px;
  top: 15px;
  bottom: 15px;
  width: 2px;
  background: var(--border-green);
  z-index: 1;
}

.timeline-step {
  display: flex;
  gap: 20px;
  position: relative;
  z-index: 2;
}

.timeline-step-icon {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--white);
  border: 3px solid var(--primary);
  color: var(--primary-dark);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.timeline-step-content {
  background: var(--bg-alt);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  border: 1px solid var(--border-light);
  flex: 1;
}

.timeline-step-title {
  font-size: 1.1rem;
  color: var(--primary-dark);
  margin-bottom: 4px;
}

.timeline-step-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.service-checklist-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 20px;
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-alt);
  padding: 12px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  font-size: 0.9rem;
  font-weight: 500;
}

.checklist-item svg {
  color: var(--primary);
  flex-shrink: 0;
}

.sticky-sidebar-card {
  position: sticky;
  top: calc(var(--header-height) + 70px);
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  border: 2px solid var(--border-green);
  box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   18. ARTICLE & NEWS DETAIL PAGE STYLES
   ========================================================================== */

/* Reading Progress Bar */
.reading-progress-track {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: transparent;
  z-index: 2000;
  pointer-events: none;
}

.reading-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #10B981, #2ECC71, #86EFAC);
  box-shadow: 0 0 10px rgba(46, 204, 113, 0.6);
  transition: width 0.1s linear;
}

/* Article Hero Header */
.article-hero-header {
  background: linear-gradient(135deg, #082816 0%, #0E4325 50%, #1E7C48 100%);
  color: var(--white);
  padding: 55px 0 45px 0;
  position: relative;
}

.article-main-title {
  font-size: clamp(1.85rem, 3.6vw, 2.65rem);
  line-height: 1.28;
  margin-bottom: 18px;
  color: var(--white);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.article-meta-row {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.9rem;
  color: #E2E8F0;
}

.meta-dot {
  color: rgba(255, 255, 255, 0.4);
  font-weight: 700;
}

/* Article Layout: Main content + Sticky Sidebar */
.article-detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 45px;
  align-items: start;
}

.article-main-body {
  min-width: 0;
}

/* Featured Media */
.article-featured-media {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 28px;
  border: 1px solid var(--border-light);
  background: var(--bg-alt);
}

.article-hero-image {
  width: 100%;
  max-height: 460px;
  object-fit: cover;
  display: block;
}

.article-hero-caption {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
  text-align: center;
  padding: 12px 18px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border-light);
}

/* Lead Excerpt Box */
.article-lead-box {
  background: var(--primary-tint);
  border-left: 4px solid var(--primary);
  padding: 20px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 28px;
}

.article-lead-text {
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--primary-dark);
  line-height: 1.7;
  margin: 0;
}

/* Key Takeaways Card */
.article-takeaways-card {
  background: #F0FDF4;
  border: 1px solid #BBF7D0;
  border-radius: var(--radius-lg);
  padding: 24px 26px;
  margin-bottom: 32px;
  box-shadow: var(--shadow-xs);
}

.takeaways-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.takeaways-icon {
  font-size: 1.3rem;
}

.takeaways-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin: 0;
}

.takeaways-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0;
  margin: 0;
}

.takeaways-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.93rem;
  color: var(--text-body);
  line-height: 1.6;
}

.takeaway-check {
  color: #16A34A;
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 2px;
}

/* Table of Contents (TOC) */
.article-toc-card {
  background: var(--bg-alt);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-lg);
  padding: 22px 26px;
  margin-bottom: 35px;
}

.toc-header {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--primary-dark);
  margin-bottom: 14px;
}

.toc-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
  color: var(--primary-dark);
}

.toc-list {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0;
}

.toc-item {
  font-size: 0.92rem;
  line-height: 1.4;
}

.toc-subitem {
  margin-left: 18px;
  font-size: 0.88rem;
  list-style-type: circle;
}

.toc-link {
  color: var(--text-body);
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.toc-link:hover {
  color: var(--primary);
  text-decoration: underline;
}

/* Rich Article Content */
.article-rich-content {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--text-body);
}

.article-rich-content h2 {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-top: 36px;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
}

.article-rich-content h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary-dark);
  margin-top: 24px;
  margin-bottom: 12px;
}

.article-rich-content p {
  margin-bottom: 18px;
}

.article-rich-content ul,
.article-rich-content ol {
  margin-bottom: 22px;
  padding-left: 24px;
}

.article-rich-content li {
  margin-bottom: 8px;
  line-height: 1.68;
}

.article-rich-content blockquote {
  background: var(--bg-alt);
  border-left: 4px solid var(--primary);
  padding: 20px 24px;
  font-style: italic;
  font-size: 1.05rem;
  color: var(--primary-dark);
  margin: 28px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  line-height: 1.7;
}

.article-figure {
  margin: 30px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  background: var(--bg-alt);
}

.article-figure-img {
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  display: block;
}

.article-figure-caption {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 10px 16px;
  background: var(--bg-alt);
  text-align: center;
  font-style: italic;
  border-top: 1px solid var(--border-light);
}

.article-highlight-box {
  background: #FEF9C3;
  border: 1px solid #FDE047;
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin: 26px 0;
  color: #713F12;
}

.article-highlight-box h4 {
  color: #854D0E;
  font-size: 1.05rem;
  margin-bottom: 6px;
  font-weight: 700;
}

.article-highlight-box p {
  margin-bottom: 0;
  font-size: 0.92rem;
  line-height: 1.6;
}

/* Footer Bar: Tags & Share */
.article-footer-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 24px;
  margin-top: 36px;
  border-top: 1px solid var(--border-light);
}

.article-tags-wrap {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-pill {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--bg-alt);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid var(--border-light);
  transition: all var(--transition-fast);
}

.tag-pill:hover {
  background: var(--primary-tint);
  color: var(--primary);
  border-color: var(--border-green);
}

.article-share-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-share-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--bg-alt);
  border: 1px solid var(--border-light);
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.btn-share-icon:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}

/* Author Box */
.article-author-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--bg-alt);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  border: 1px solid var(--border-light);
  margin-top: 35px;
}

.author-avatar-badge {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: var(--white);
  font-size: 1.3rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-sm);
}

.author-info {
  flex: 1;
}

.author-full-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 2px;
}

.author-position {
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 6px;
}

.author-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin: 0;
}

/* Ask Question Box */
.article-question-card {
  background: var(--white);
  border: 1px solid var(--border-green);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  margin-top: 40px;
  box-shadow: var(--shadow-sm);
}

/* Related Posts */
.article-related-wrap {
  margin-top: 50px;
}

/* Sidebar Widgets */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

.sidebar-widget {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 24px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-xs);
}

.sidebar-widget-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-tint);
  position: relative;
}

.sidebar-widget-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 35px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.sidebar-category-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0;
  margin: 0;
}

.sidebar-cat-link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-body);
  font-size: 0.88rem;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.sidebar-cat-link:hover {
  background: var(--primary-tint);
  color: var(--primary);
  transform: translateX(3px);
}

.cat-count {
  font-size: 0.75rem;
  background: rgba(0, 0, 0, 0.05);
  color: var(--text-muted);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

.sidebar-post-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 0;
  margin: 0;
}

.sidebar-post-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.sidebar-post-rank {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--primary-tint);
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.sidebar-post-item:nth-child(1) .sidebar-post-rank {
  background: #FEF3C7;
  color: #D97706;
}

.sidebar-post-item:nth-child(2) .sidebar-post-rank {
  background: #E0E7FF;
  color: #4338CA;
}

.sidebar-post-item:nth-child(3) .sidebar-post-rank {
  background: #FEE2E2;
  color: #DC2626;
}

.sidebar-post-info {
  flex: 1;
}

.sidebar-post-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.4;
  text-decoration: none;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition-fast);
}

.sidebar-post-title:hover {
  color: var(--primary);
}

.sidebar-post-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.sidebar-promo-card {
  background: var(--primary-gradient);
  color: var(--white);
  border: none;
  box-shadow: var(--shadow-md);
}

/* ==========================================================================
   SERVICE DETAIL BOOKING MODAL POPUP (MOBILE & DESKTOP QUICK ACTIONS)
   ========================================================================== */
.booking-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(14, 30, 20, 0.78);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2500;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.booking-modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.booking-modal-wrapper {
  position: fixed;
  inset: 0;
  z-index: 2501;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.booking-modal-wrapper.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.booking-modal-card {
  position: relative;
  width: 100%;
  max-width: 480px;
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 24px 22px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(46, 204, 113, 0.25);
  max-height: 90vh;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  transform: translateY(20px) scale(0.96);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.booking-modal-wrapper.active .booking-modal-card {
  transform: translateY(0) scale(1);
}

.booking-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 34px;
  height: 34px;
  background: var(--bg-soft);
  border: 1px solid var(--border-light);
  border-radius: 50%;
  font-size: 1.3rem;
  line-height: 1;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  z-index: 5;
}

.booking-modal-close:hover {
  background: #EF4444;
  color: var(--white);
  border-color: #EF4444;
}

.booking-modal-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 4px;
  line-height: 1.25;
}

.booking-modal-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
  margin-bottom: 16px;
}

.booking-modal-card .form-group-modal {
  margin-bottom: 11px;
}

.booking-modal-card .form-group-modal label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 3px;
}

.booking-modal-card .form-group-modal .form-input {
  width: 100%;
  padding: 9px 12px;
  font-size: 0.88rem;
  background: #F8FAF9;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  transition: border-color var(--transition-fast);
}

.booking-modal-card .form-group-modal .form-input:focus {
  border-color: var(--primary);
  outline: none;
  background: var(--white);
}

.modal-footer-hotline {
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed var(--border-light);
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}