/* =====================================================
   LED SƠN LÂM V2 — PREMIUM DESIGN SYSTEM
   Dark Theme | Glassmorphism | Modern B2B
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:wght@300;400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700;800&display=swap');

/* =====================================================
   CSS VARIABLES — DESIGN TOKENS
   ===================================================== */
:root {
  /* Primary Palette */
  --primary: #2563EB;
  --primary-light: #3B82F6;
  --primary-dark: #1D4ED8;
  --primary-glow: rgba(37, 99, 235, 0.4);

  /* Accent */
  --accent: #F59E0B;
  --accent-light: #FCD34D;
  --accent-dark: #D97706;

  /* Success / Tech */
  --success: #10B981;
  --tech-cyan: #06B6D4;
  --tech-purple: #8B5CF6;

  /* Dark Background System */
  --bg-900: #050810;
  --bg-800: #0A0F1E;
  --bg-700: #0F172A;
  --bg-600: #1E293B;
  --bg-500: #263042;
  --bg-glass: rgba(15, 23, 42, 0.8);
  --bg-glass-light: rgba(30, 41, 59, 0.6);

  /* Text */
  --text-primary: #F8FAFC;
  --text-secondary: #CBD5E1;
  --text-muted: #64748B;
  --text-accent: #2563EB;

  /* Borders */
  --border: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(37, 99, 235, 0.4);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #1D4ED8 0%, #7C3AED 100%);
  --gradient-accent: linear-gradient(135deg, #F59E0B 0%, #EF4444 100%);
  --gradient-tech: linear-gradient(135deg, #06B6D4 0%, #2563EB 50%, #8B5CF6 100%);
  --gradient-dark: linear-gradient(180deg, #050810 0%, #0A0F1E 100%);
  --gradient-card: linear-gradient(135deg, rgba(30,41,59,0.8) 0%, rgba(15,23,42,0.9) 100%);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.4);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
  --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.3);
  --shadow-accent: 0 0 30px rgba(245, 158, 11, 0.3);

  /* Spacing */
  --section-py: clamp(60px, 8vw, 100px);
  --container-max: 1280px;
  --container-px: clamp(16px, 4vw, 48px);

  /* Typography */
  --font-main: 'Be Vietnam Pro', 'Inter', sans-serif;

  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  background: var(--bg-900);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* =====================================================
   SCROLLBAR
   ===================================================== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-800); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 3px; }

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

.section { padding: var(--section-py) 0; }

/* =====================================================
   TYPOGRAPHY
   ===================================================== */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary-light);
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.section-title span {
  background: var(--gradient-tech);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin-top: 12px;
  line-height: 1.8;
}

/* =====================================================
   BUTTONS
   ===================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(37, 99, 235, 0.5);
}

.btn-accent {
  background: var(--gradient-accent);
  color: white;
  box-shadow: var(--shadow-accent);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(245, 158, 11, 0.5);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  border-color: var(--primary-light);
  color: var(--primary-light);
  background: rgba(37, 99, 235, 0.1);
}

.btn-glass {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px);
}

.btn-glass:hover {
  background: rgba(37, 99, 235, 0.2);
  border-color: var(--primary-light);
}

.btn-lg { padding: 18px 36px; font-size: 16px; }
.btn-sm { padding: 10px 20px; font-size: 13px; }

/* =====================================================
   CARDS
   ===================================================== */
.card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px);
  transition: var(--transition);
  overflow: hidden;
}

.card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

/* =====================================================
   BADGES & TAGS
   ===================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
}

.badge-primary { background: rgba(37,99,235,0.2); color: var(--primary-light); border: 1px solid rgba(37,99,235,0.3); }
.badge-accent { background: rgba(245,158,11,0.2); color: var(--accent-light); border: 1px solid rgba(245,158,11,0.3); }
.badge-success { background: rgba(16,185,129,0.2); color: #34D399; border: 1px solid rgba(16,185,129,0.3); }
.badge-hot { background: rgba(239,68,68,0.2); color: #F87171; border: 1px solid rgba(239,68,68,0.3); }

/* =====================================================
   NAVBAR
   ===================================================== */
.v2-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: var(--transition);
}

.navbar-top {
  background: var(--bg-800);
  border-bottom: 1px solid var(--border);
  padding: 8px 0;
}

.navbar-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.navbar-top-left {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 13px;
  color: var(--text-secondary);
}

.navbar-top-left a {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.navbar-top-left a:hover { color: var(--primary-light); }

.navbar-top-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.navbar-hotline {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  color: var(--accent-light);
  font-weight: 600;
  font-size: 13px;
  transition: var(--transition);
}

.navbar-hotline:hover {
  background: rgba(245, 158, 11, 0.25);
  color: var(--accent-light);
}

.navbar-main {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0;
}

.navbar-main-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.navbar-logo img {
  height: 44px;
  width: auto;
  filter: drop-shadow(0 2px 8px rgba(37,99,235,0.3));
}

.navbar-logo-text,
.logo-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  line-height: 1.2;
}

.navbar-logo-text .brand,
.brand-name {
  font-size: 18px;
  font-weight: 900;
  color: #FFFFFF;
  letter-spacing: 0.5px;
  white-space: nowrap;
  display: block;
}

.navbar-logo-text .tagline,
.brand-sub {
  font-size: 10px;
  font-weight: 700;
  color: #60A5FA;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  white-space: nowrap;
  display: block;
  margin-top: 2px;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-item {
  position: relative;
}

.nav-link-v2 {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-link-v2:hover,
.nav-link-v2.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.nav-item:hover > .nav-link-v2 {
  background: #004BB7 !important;
  color: #FFFFFF !important;
  border-radius: 8px 8px 0 0;
  font-weight: 800;
}

.nav-item:hover > .nav-link-v2 i {
  transform: rotate(180deg);
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 270px;
  background: #FFFFFF !important;
  border: 1px solid #E2E8F0;
  border-radius: 0 0 12px 12px;
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(0);
  transition: all 0.25s ease;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.25);
  backdrop-filter: none;
  z-index: 1500;
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
}

.nav-dropdown a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: 0;
  color: #1E293B !important;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s ease;
  line-height: 1.3;
}

.nav-dropdown a:hover {
  background: #F1F5F9 !important;
  color: #004BB7 !important;
  padding-left: 28px;
}

/* Sub-dropdown & Mega Menu Flyout */
.dropdown-category-item {
  position: relative;
}

.category-title-link {
  display: flex !important;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 24px;
  color: #1E293B !important;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.2s ease;
}

.category-title-link:hover,
.dropdown-category-item:hover > .category-title-link {
  background: #F1F5F9 !important;
  color: #004BB7 !important;
  padding-left: 28px;
}

.category-title-link .arrow-icon {
  font-size: 11px;
  color: #94A3B8;
  transition: transform 0.2s ease, color 0.2s ease;
}

.dropdown-category-item:hover > .category-title-link .arrow-icon {
  color: #004BB7;
  transform: translateX(3px);
}

.nav-submenu {
  position: absolute;
  top: 0;
  left: 100%;
  min-width: 320px;
  background: #FFFFFF !important;
  border: 1px solid #E2E8F0;
  border-radius: 0 12px 12px 12px;
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateX(8px);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.22);
  z-index: 1600;
}

.dropdown-category-item:hover > .nav-submenu {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.nav-submenu a {
  display: flex !important;
  align-items: center;
  gap: 10px;
  padding: 10px 20px !important;
  color: #334155 !important;
  font-size: 13.5px !important;
  font-weight: 600 !important;
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.nav-submenu a:hover {
  background: #EFF6FF !important;
  color: #004BB7 !important;
  padding-left: 24px !important;
}

.nav-submenu a i {
  font-size: 12px;
  color: #64748B;
  width: 16px;
  text-align: center;
}

.nav-submenu a:hover i {
  color: #004BB7;
}

@media (max-width: 992px) {
  .nav-submenu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: #F8FAFC !important;
    padding-left: 16px;
    min-width: 100%;
  }
}

.navbar-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.navbar-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
  display: block;
}

.v2-navbar.scrolled .navbar-top { display: none; }
.v2-navbar.scrolled .navbar-main {
  background: rgba(5, 8, 16, 0.95);
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}

/* =====================================================
   HERO
   ===================================================== */
.hero-v2 {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  padding-top: 120px;
  overflow: hidden;
}

.hero-bg-v2 {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-v2 img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.25;
}

.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(5,8,16,0.95) 0%, rgba(10,15,30,0.85) 50%, rgba(5,8,16,0.90) 100%);
}

.hero-grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.5;
}

.hero-content-v2 {
  position: relative;
  z-index: 2;
  width: 100%;
}

.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
  margin-top: 60px;
}

.hero-split-card {
  padding: 40px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  backdrop-filter: blur(20px);
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.hero-split-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: var(--transition-slow);
  border-radius: var(--radius-xl);
}

.hero-split-card.card-construction::before {
  background: linear-gradient(135deg, rgba(37,99,235,0.15) 0%, rgba(124,58,237,0.10) 100%);
}

.hero-split-card.card-components::before {
  background: linear-gradient(135deg, rgba(245,158,11,0.15) 0%, rgba(239,68,68,0.10) 100%);
}

.hero-split-card:hover::before { opacity: 1; }
.hero-split-card:hover { border-color: var(--border-accent); transform: translateY(-6px); box-shadow: var(--shadow-glow); }
.hero-split-card.card-components:hover { border-color: rgba(245,158,11,0.4); box-shadow: var(--shadow-accent); }

.hero-split-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
}

.icon-construction { background: rgba(37,99,235,0.2); border: 1px solid rgba(37,99,235,0.3); color: var(--primary-light); }
.icon-components { background: rgba(245,158,11,0.2); border: 1px solid rgba(245,158,11,0.3); color: var(--accent-light); }

.hero-split-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.hero-split-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.hero-split-features {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 28px;
}

.hero-split-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.hero-split-feature .check {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  flex-shrink: 0;
}

.check-blue { background: rgba(37,99,235,0.2); color: var(--primary-light); }
.check-gold { background: rgba(245,158,11,0.2); color: var(--accent-light); }

/* =====================================================
   STATS BAR
   ===================================================== */
.stats-bar {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  backdrop-filter: blur(20px);
  position: relative;
  overflow: hidden;
}

.stats-bar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-tech);
  opacity: 0.6;
}

.stat-item-v2 {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 16px;
  border-right: 1px solid var(--border);
}

.stat-item-v2:last-child { border-right: none; }

.stat-number-v2 {
  font-size: clamp(28px, 3vw, 42px);
  font-weight: 900;
  background: var(--gradient-tech);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label-v2 {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  text-align: center;
}

/* =====================================================
   PARTNER LOGOS (inline chips)
   ===================================================== */
.partners-chip-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.partner-chip {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.partner-chip:hover {
  border-color: var(--primary-light);
  color: var(--primary-light);
  background: rgba(37,99,235,0.1);
}

/* =====================================================
   QUICK ESTIMATOR WIDGET
   ===================================================== */
.estimator-widget {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  backdrop-filter: blur(20px);
}

.estimator-header {
  background: var(--gradient-primary);
  padding: 20px 28px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.estimator-header-icon {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: white;
}

.estimator-header h3 {
  font-size: 18px;
  font-weight: 700;
  color: white;
  margin: 0;
}

.estimator-header p {
  font-size: 12px;
  color: rgba(255,255,255,0.7);
  margin: 0;
}

.estimator-steps {
  display: flex;
  border-bottom: 1px solid var(--border);
}

.estimator-step-tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  transition: var(--transition);
  cursor: pointer;
}

.estimator-step-tab.active {
  color: var(--primary-light);
  border-bottom-color: var(--primary-light);
}

.estimator-step-tab .step-num {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(37,99,235,0.2);
  border: 1px solid rgba(37,99,235,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  color: var(--primary-light);
}

.estimator-step-tab.active .step-num {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.estimator-body {
  padding: 24px 28px;
}

.estimator-panel { display: none; }
.estimator-panel.active { display: block; }

.estimator-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin-bottom: 20px;
}

.estimator-option {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 12px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  background: var(--bg-glass);
}

.estimator-option:hover { border-color: var(--primary-light); }
.estimator-option.selected {
  border-color: var(--primary-light);
  background: rgba(37,99,235,0.15);
  box-shadow: 0 0 0 2px rgba(37,99,235,0.3);
}

.estimator-option-icon { font-size: 24px; margin-bottom: 6px; }
.estimator-option-label { font-size: 12px; font-weight: 600; color: var(--text-secondary); }
.estimator-option.selected .estimator-option-label { color: var(--primary-light); }

.estimator-input-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.estimator-input-wrap label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.estimator-input-wrap input, .estimator-input-wrap select {
  width: 100%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
}

.estimator-input-wrap input:focus, .estimator-input-wrap select:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}

.estimator-input-wrap select option { background: var(--bg-700); color: var(--text-primary); }

.estimator-result {
  background: var(--bg-700);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-top: 16px;
}

.estimator-result h4 {
  font-size: 13px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.result-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.result-item label {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.result-item .result-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.result-total {
  border-top: 1px solid var(--border);
  padding-top: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.result-total label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 600;
}

.result-total .total-price {
  font-size: 24px;
  font-weight: 900;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.estimator-nav {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 16px;
}

/* =====================================================
   PRODUCTS SECTION
   ===================================================== */
.products-v2 { position: relative; }

.product-categories-tabs {
  display: flex;
  gap: 6px;
  margin-bottom: 36px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 6px;
  width: fit-content;
}

.product-cat-tab {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.product-cat-tab:hover { color: var(--text-primary); }
.product-cat-tab.active {
  background: var(--gradient-primary);
  color: white;
  box-shadow: var(--shadow-glow);
}

.products-grid-v2 {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.product-card-v2 {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.product-card-v2:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
  transform: translateY(-6px);
}

.product-img-v2 {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
}

.product-img-v2 img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.product-card-v2:hover .product-img-v2 img { transform: scale(1.08); }

.product-img-badges {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.product-img-actions {
  position: absolute;
  top: 12px;
  right: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  opacity: 0;
  transition: var(--transition);
}

.product-card-v2:hover .product-img-actions { opacity: 1; }

.product-action-btn {
  width: 36px;
  height: 36px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  font-size: 14px;
  backdrop-filter: blur(10px);
  cursor: pointer;
  transition: var(--transition);
}

.product-action-btn:hover { background: var(--primary); border-color: var(--primary); }

.product-info-v2 {
  padding: 16px;
}

.product-specs-row {
  display: flex;
  gap: 6px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.spec-chip {
  background: rgba(37,99,235,0.1);
  border: 1px solid rgba(37,99,235,0.2);
  border-radius: var(--radius-full);
  padding: 3px 10px;
  font-size: 11px;
  color: var(--primary-light);
  font-weight: 500;
}

.product-name-v2 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.3;
}

.product-price-v2 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
}

.product-price-label {
  font-size: 13px;
  color: var(--text-muted);
}

.product-price-cta {
  background: var(--gradient-primary);
  color: white;
  border-radius: var(--radius-full);
  padding: 6px 16px;
  font-size: 12px;
  font-weight: 600;
  transition: var(--transition);
}

.product-price-cta:hover { box-shadow: var(--shadow-glow); }

/* =====================================================
   SOLUTIONS GRID
   ===================================================== */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.solution-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3/4;
  cursor: pointer;
}

.solution-card:nth-child(1), .solution-card:nth-child(4) { grid-row: span 2; aspect-ratio: unset; }

.solution-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
  filter: brightness(0.6);
}

.solution-card:hover img { transform: scale(1.08); filter: brightness(0.4); }

.solution-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(5,8,16,0.9) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
  transition: var(--transition);
}

.solution-card-icon {
  width: 44px;
  height: 44px;
  background: rgba(37,99,235,0.3);
  border: 1px solid rgba(37,99,235,0.5);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary-light);
  margin-bottom: 12px;
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.solution-card:hover .solution-card-icon {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.solution-card-title {
  font-size: 18px;
  font-weight: 700;
  color: white;
  margin-bottom: 6px;
}

.solution-card-desc {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  line-height: 1.5;
  max-height: 0;
  overflow: hidden;
  transition: var(--transition-slow);
}

.solution-card:hover .solution-card-desc { max-height: 60px; }

.solution-card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--primary-light);
  font-size: 12px;
  font-weight: 600;
  margin-top: 10px;
  opacity: 0;
  transition: var(--transition);
}

.solution-card:hover .solution-card-link { opacity: 1; }

/* =====================================================
   WORKFLOW STEPS
   ===================================================== */
.workflow-steps {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  position: relative;
}

.workflow-steps::before {
  content: '';
  position: absolute;
  top: 32px;
  left: calc(100% / 12);
  right: calc(100% / 12);
  height: 1px;
  background: var(--gradient-tech);
  opacity: 0.4;
}

.workflow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 0 12px;
  position: relative;
}

.workflow-step-num {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 900;
  color: var(--text-muted);
  margin-bottom: 16px;
  transition: var(--transition);
  position: relative;
  z-index: 1;
  backdrop-filter: blur(10px);
}

.workflow-step:hover .workflow-step-num {
  background: var(--gradient-primary);
  border-color: var(--primary);
  color: white;
  box-shadow: var(--shadow-glow);
}

.workflow-step-icon {
  font-size: 24px;
}

.workflow-step-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.workflow-step-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* =====================================================
   PROJECTS MAP
   ===================================================== */
.projects-map-section {
  position: relative;
}

.map-container {
  position: relative;
  display: flex;
  gap: 32px;
  align-items: flex-start;
}

.map-svg-wrapper {
  flex: 1;
  position: relative;
}

.map-sidebar {
  width: 300px;
  flex-shrink: 0;
}

.project-list-item {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 12px;
  transition: var(--transition);
  cursor: pointer;
}

.project-list-item:hover {
  border-color: var(--border-accent);
  transform: translateX(-4px);
}

.project-list-item h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.project-list-item p {
  font-size: 12px;
  color: var(--text-muted);
}

.project-list-meta {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

/* =====================================================
   CTA FORM
   ===================================================== */
.cta-form-section {
  background: var(--bg-700);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.cta-form-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.cta-form-left h2 {
  font-size: clamp(28px, 3.5vw, 44px);
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-features-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 24px;
}

.cta-feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--text-secondary);
}

.cta-feature-icon {
  width: 32px;
  height: 32px;
  background: rgba(16,185,129,0.15);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--success);
  font-size: 14px;
  flex-shrink: 0;
}

.v2-form {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  backdrop-filter: blur(20px);
}

.v2-form-group {
  margin-bottom: 16px;
}

.v2-form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.v2-form-input {
  width: 100%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 14px;
  transition: var(--transition);
}

.v2-form-input:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}

.v2-form-input::placeholder { color: var(--text-muted); }

.v2-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.v2-form-select {
  width: 100%;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 14px;
  transition: var(--transition);
  cursor: pointer;
}

.v2-form-select:focus { outline: none; border-color: var(--primary-light); }
.v2-form-select option { background: var(--bg-700); }

/* =====================================================
   FOOTER V2
   ===================================================== */
.footer-v2 {
  background: var(--bg-800);
  border-top: 1px solid var(--border);
}

.footer-top {
  padding: 60px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
  gap: 48px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  margin: 16px 0;
}

.footer-brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand-logo img { height: 40px; width: auto; }

.footer-social-links {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.social-btn {
  width: 38px;
  height: 38px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 15px;
  transition: var(--transition);
}

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

.footer-cert-badges {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.cert-badge-v2 {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
}

.cert-badge-v2 img { height: 20px; width: auto; }

.footer-col-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  position: relative;
}

.footer-col-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--gradient-primary);
  border-radius: 2px;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

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

.footer-contact-block {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-contact-item-v2 {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.footer-contact-item-v2 .fi-icon {
  width: 32px;
  height: 32px;
  background: rgba(37,99,235,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  font-size: 13px;
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-contact-item-v2 .fi-text {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.footer-contact-item-v2 .fi-text strong {
  color: var(--text-secondary);
  display: block;
}

.footer-zalo-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, #0068FF, #0052CC);
  border-radius: var(--radius-full);
  padding: 12px 20px;
  color: white;
  font-weight: 600;
  font-size: 14px;
  margin-top: 12px;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  text-decoration: none;
}

.footer-zalo-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,104,255,0.4); color: white; }

.footer-branches {
  padding: 24px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.footer-branches h4 {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.branches-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.branch-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12px;
  color: var(--text-muted);
}

.branch-item i { color: var(--primary-light); margin-top: 2px; flex-shrink: 0; }

.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom-links {
  display: flex;
  gap: 20px;
}

.footer-bottom-links a {
  color: var(--text-muted);
  font-size: 12px;
  transition: var(--transition);
}

.footer-bottom-links a:hover { color: var(--primary-light); }

/* =====================================================
   FLOATING BUTTONS V2
   ===================================================== */
.floating-v2 {
  position: fixed;
  right: 20px;
  bottom: 30px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 999;
  align-items: flex-end;
}

.float-v2-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  backdrop-filter: blur(20px);
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
  box-shadow: var(--shadow-md);
  white-space: nowrap;
}

.float-v2-btn:hover { transform: translateX(-4px); }
.float-v2-btn.zalo { border-color: rgba(0,104,255,0.4); }
.float-v2-btn.zalo:hover { background: rgba(0,104,255,0.15); color: #6FAFFF; }
.float-v2-btn.phone { border-color: rgba(16,185,129,0.4); }
.float-v2-btn.phone:hover { background: rgba(16,185,129,0.15); color: var(--success); }
.float-v2-btn.quote { background: var(--gradient-primary); border-color: var(--primary); color: white; box-shadow: var(--shadow-glow); }

.float-v2-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.float-phone-fixed {
  position: fixed;
  left: 20px;
  bottom: 30px;
  z-index: 999;
}

.phone-pulse-btn {
  width: 56px;
  height: 56px;
  background: var(--success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 22px;
  cursor: pointer;
  text-decoration: none;
  position: relative;
  box-shadow: 0 0 0 0 rgba(16,185,129,0.4);
  animation: phone-pulse 2s infinite;
}

@keyframes phone-pulse {
  0% { box-shadow: 0 0 0 0 rgba(16,185,129,0.5); }
  70% { box-shadow: 0 0 0 20px rgba(16,185,129,0); }
  100% { box-shadow: 0 0 0 0 rgba(16,185,129,0); }
}

.scroll-to-top-v2 {
  position: fixed;
  bottom: 100px;
  right: 20px;
  width: 44px;
  height: 44px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 16px;
  cursor: pointer;
  z-index: 998;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  border: none;
  box-shadow: var(--shadow-glow);
}

.scroll-to-top-v2.visible { opacity: 1; transform: translateY(0); }
.scroll-to-top-v2:hover { transform: translateY(-4px); }

/* =====================================================
   TESTIMONIALS
   ===================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.testimonial-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}

.testimonial-card:hover { border-color: var(--border-accent); transform: translateY(-4px); }

.testimonial-stars {
  display: flex;
  gap: 3px;
  color: var(--accent);
  font-size: 14px;
  margin-bottom: 16px;
}

.testimonial-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 44px;
  height: 44px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}

.testimonial-author-info h5 { font-size: 14px; font-weight: 700; color: var(--text-primary); }
.testimonial-author-info p { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* =====================================================
   PARTNER MARQUEE
   ===================================================== */
.partner-marquee-wrap {
  overflow: hidden;
  position: relative;
}

.partner-marquee-wrap::before,
.partner-marquee-wrap::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 100px;
  z-index: 2;
}

.partner-marquee-wrap::before { left: 0; background: linear-gradient(90deg, var(--bg-900), transparent); }
.partner-marquee-wrap::after { right: 0; background: linear-gradient(-90deg, var(--bg-900), transparent); }

.partner-marquee-track {
  display: flex;
  gap: 24px;
  animation: marquee-scroll 30s linear infinite;
  width: max-content;
}

.partner-marquee-track:hover { animation-play-state: paused; }

@keyframes marquee-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.partner-logo-v2 {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  white-space: nowrap;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-muted);
  transition: var(--transition);
  backdrop-filter: blur(10px);
  min-width: 160px;
}

.partner-logo-v2:hover {
  border-color: var(--primary-light);
  color: var(--primary-light);
  background: rgba(37,99,235,0.1);
}

/* =====================================================
   PRODUCT FILTER (san-pham page)
   ===================================================== */
.filter-sidebar {
  width: 280px;
  flex-shrink: 0;
  position: sticky;
  top: 140px;
  height: fit-content;
}

.filter-block {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 16px;
}

.filter-block-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.filter-option {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  cursor: pointer;
}

.filter-option input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
  cursor: pointer;
}

.filter-option-label {
  font-size: 13px;
  color: var(--text-secondary);
  flex: 1;
  cursor: pointer;
}

.filter-option-count {
  font-size: 11px;
  color: var(--text-muted);
  background: var(--bg-glass);
  border-radius: var(--radius-full);
  padding: 2px 8px;
}

.price-range-slider {
  width: 100%;
  accent-color: var(--primary);
  margin: 8px 0;
}

/* =====================================================
   LED CALCULATOR PAGE
   ===================================================== */
.calculator-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 32px;
  align-items: flex-start;
}

.calc-panel {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.calc-panel-header {
  padding: 20px 28px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.calc-panel-header h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
}

.calc-panel-body { padding: 28px; }

.calc-section-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary-light);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 24px; }
.calc-grid-3 { grid-template-columns: 1fr 1fr 1fr; }

.calc-input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.calc-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.calc-label span { color: var(--text-muted); font-weight: 400; }

.calc-input {
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  width: 100%;
}

.calc-input:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}

.calc-input::placeholder { color: var(--text-muted); font-weight: 400; }
.calc-input option { background: var(--bg-700); }

.calc-toggle-group {
  display: flex;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 4px;
}

.calc-toggle-btn {
  flex: 1;
  padding: 10px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  text-align: center;
  transition: var(--transition);
}

.calc-toggle-btn.active { background: var(--primary); color: white; box-shadow: var(--shadow-glow); }

.calc-result-panel {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: sticky;
  top: 140px;
}

.result-panel-header {
  background: var(--gradient-primary);
  padding: 20px 24px;
}

.result-panel-header h3 { font-size: 16px; font-weight: 700; color: white; margin: 0 0 4px; }
.result-panel-header p { font-size: 12px; color: rgba(255,255,255,0.7); margin: 0; }

.result-panel-body { padding: 24px; }

.result-section { margin-bottom: 24px; }

.result-section-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 12px;
}

.result-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.result-row:last-child { border-bottom: none; }

.result-row-label {
  font-size: 13px;
  color: var(--text-secondary);
}

.result-row-value {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.result-highlight {
  background: rgba(37,99,235,0.1);
  border: 1px solid rgba(37,99,235,0.2);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 20px;
}

.result-highlight-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.result-highlight-value {
  font-size: 28px;
  font-weight: 900;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.result-highlight-note {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
}

/* =====================================================
   SUPPORT PAGE
   ===================================================== */
.warranty-lookup {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
  margin-bottom: 40px;
}

.warranty-search-bar {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.warranty-search-input {
  flex: 1;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 14px 24px;
  color: var(--text-primary);
  font-size: 15px;
  transition: var(--transition);
}

.warranty-search-input:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}

.faq-item {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.open { border-color: var(--border-accent); }

.faq-question {
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  gap: 12px;
}

.faq-icon {
  width: 28px;
  height: 28px;
  background: rgba(37,99,235,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  font-size: 13px;
  flex-shrink: 0;
  transition: var(--transition);
}

.faq-item.open .faq-icon { background: var(--primary); color: white; transform: rotate(45deg); }

.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 20px 20px;
}

.download-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
  cursor: pointer;
}

.download-card:hover { border-color: var(--border-accent); transform: translateX(4px); }

.download-icon {
  width: 48px;
  height: 48px;
  background: rgba(37,99,235,0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary-light);
  flex-shrink: 0;
}

.download-info { flex: 1; }
.download-info h4 { font-size: 14px; font-weight: 700; color: var(--text-primary); margin-bottom: 4px; }
.download-info p { font-size: 12px; color: var(--text-muted); }

.download-btn {
  background: rgba(37,99,235,0.15);
  border: 1px solid rgba(37,99,235,0.3);
  border-radius: var(--radius-full);
  padding: 8px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary-light);
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
}

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

/* =====================================================
   PROJECTS PAGE
   ===================================================== */
.project-card-v2 {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.project-card-v2:hover { border-color: var(--border-accent); box-shadow: var(--shadow-glow); transform: translateY(-6px); }

.project-img-v2 {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
}

.project-img-v2 img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition-slow); }
.project-card-v2:hover .project-img-v2 img { transform: scale(1.06); }

.project-img-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5,8,16,0.5);
  opacity: 0;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-card-v2:hover .project-img-overlay { opacity: 1; }

.project-info-v2 { padding: 20px; }
.project-info-v2 h3 { font-size: 16px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.project-info-v2 p { font-size: 13px; color: var(--text-muted); margin-bottom: 12px; }

.project-specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.project-spec {
  background: var(--bg-glass);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
}

.project-spec label { font-size: 10px; color: var(--text-muted); display: block; margin-bottom: 2px; text-transform: uppercase; }
.project-spec span { font-size: 13px; font-weight: 600; color: var(--text-primary); }

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

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

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

@keyframes floatY {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 20px rgba(37,99,235,0.2); }
  50% { box-shadow: 0 0 40px rgba(37,99,235,0.5); }
}

@keyframes count-up {
  from { opacity: 0; transform: scale(0.8); }
  to { opacity: 1; transform: scale(1); }
}

.animate-fadeInUp { animation: fadeInUp 0.6s ease forwards; }
.animate-fadeInLeft { animation: fadeInLeft 0.6s ease forwards; }
.animate-fadeInRight { animation: fadeInRight 0.6s ease forwards; }
.animate-float { animation: floatY 4s ease-in-out infinite; }

[data-animate] { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease, transform 0.6s ease; }
[data-animate].animated { opacity: 1; transform: translateY(0); }

/* =====================================================
   SECTION DIVIDERS
   ===================================================== */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), var(--primary-glow), var(--border), transparent);
  margin: 0;
}

/* =====================================================
   GLOW ORBS (decorative)
   ===================================================== */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.orb-blue { background: rgba(37,99,235,0.15); }
.orb-purple { background: rgba(124,58,237,0.12); }
.orb-cyan { background: rgba(6,182,212,0.10); }

/* =====================================================
   RESPONSIVE
   ===================================================== */
@media (max-width: 1200px) {
  .solutions-grid { grid-template-columns: repeat(3, 1fr); }
  .solutions-grid .solution-card:nth-child(1), 
  .solutions-grid .solution-card:nth-child(4) { grid-row: auto; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
  .calculator-layout { grid-template-columns: 1fr; }
  .calc-result-panel { position: static; }
}

@media (max-width: 992px) {
  .hero-split { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .stat-item-v2 { border-right: none; border-bottom: 1px solid var(--border); padding-bottom: 20px; }
  .stat-item-v2:nth-child(odd) { border-right: 1px solid var(--border); }
  .workflow-steps { grid-template-columns: repeat(3, 1fr); }
  .workflow-steps::before { display: none; }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .map-container { flex-direction: column; }
  .map-sidebar { width: 100%; }
  .cta-form-inner { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .branches-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .navbar-menu { display: none; }
  .navbar-menu.open { 
    display: flex; 
    flex-direction: column; 
    position: fixed; 
    top: 70px;
    left: 0;
    right: 0;
    background: var(--bg-800);
    border-bottom: 1px solid var(--border);
    padding: 16px;
    gap: 4px;
    z-index: 999;
  }
  .navbar-toggle { display: flex; }
  .navbar-cta .btn { display: none; }
  .navbar-top { display: none; }
  .hero-v2 { padding-top: 90px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); padding: 24px; }
  .workflow-steps { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .float-v2-btn span { display: none; }
  .float-v2-btn { padding: 12px; }
  .estimator-input-group { grid-template-columns: 1fr; }
  .v2-form-row { grid-template-columns: 1fr; }
  .calc-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  :root { --section-py: 50px; }
  .stats-bar { grid-template-columns: 1fr 1fr; gap: 16px; }
  .solutions-grid { grid-template-columns: 1fr; }
  .products-grid-v2 { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
  .hero-split-card { padding: 24px; }
}

/* =====================================================
   PRODUCT DETAIL PAGE STYLES (MATCHING USER REFERENCE)
   ===================================================== */
.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 40px;
  align-items: start;
}

.product-gallery {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.product-main-view {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.product-main-view img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.product-thumbnails {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.thumb-item {
  aspect-ratio: 4/3;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 2px solid var(--border);
  cursor: pointer;
  opacity: 0.6;
  transition: all 0.2s ease;
}

.thumb-item.active,
.thumb-item:hover {
  opacity: 1;
  border-color: var(--primary);
  box-shadow: 0 0 12px rgba(37,99,235,0.4);
}

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

/* Product Info Right Column */
.product-detail-header h1 {
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 24px;
  line-height: 1.3;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* 2x2 Specs Grid */
.detail-specs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 28px;
}

.spec-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.spec-icon-box {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: rgba(37,99,235,0.12);
  border: 1px solid rgba(37,99,235,0.25);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.spec-info label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.spec-info span {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

/* Detail CTA Buttons */
.detail-cta-row {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.btn-order-red {
  background: #EF4444;
  color: #ffffff;
  border: none;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 15px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 16px rgba(239,68,68,0.3);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-order-red:hover {
  background: #DC2626;
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(239,68,68,0.4);
}

.btn-consult-orange {
  background: transparent;
  color: #F97316;
  border: 2px solid #F97316;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-consult-orange:hover {
  background: rgba(249,115,22,0.1);
  color: #F97316;
  transform: translateY(-2px);
}

/* Quick Contact & Share Bar */
.detail-share-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  font-size: 13px;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.detail-share-bar a {
  color: var(--text-secondary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s ease;
}

.detail-share-bar a:hover {
  color: var(--primary);
}

.social-share-icons {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.social-icon-circle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all 0.2s ease;
  text-decoration: none;
}

.social-icon-circle:hover {
  background: var(--primary);
  color: #fff;
}

/* 4 Service Commitment Cards Bar */
.commitment-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  background: rgba(255,255,255,0.02);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  margin: 40px 0;
}

.commitment-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-right: 12px;
  border-right: 1px solid var(--border-color);
}

.commitment-item:last-child {
  border-right: none;
  padding-right: 0;
}

.commitment-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(37,99,235,0.1);
  border: 1px solid rgba(37,99,235,0.2);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  flex-shrink: 0;
}

.commitment-text h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.commitment-text p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
  margin: 0;
}

/* Product Detail Tabs Section */
.product-tabs-wrapper {
  margin-top: 40px;
}

.product-nav-tabs {
  display: flex;
  gap: 24px;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 28px;
}

.product-tab-btn {
  background: none;
  border: none;
  padding: 12px 4px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  position: relative;
  transition: color 0.3s ease;
}

.product-tab-btn.active {
  color: #EF4444;
}

.product-tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 3px;
  background: #EF4444;
  border-radius: 3px;
}

.product-tab-pane {
  display: none;
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 15px;
}

.product-tab-pane.active {
  display: block;
}

@media (max-width: 992px) {
  .product-detail-grid { grid-template-columns: 1fr; }
  .commitment-bar { grid-template-columns: 1fr 1fr; gap: 20px; }
  .commitment-item { border-right: none; }
}

@media (max-width: 576px) {
  .commitment-bar { grid-template-columns: 1fr; }
  .detail-specs-grid { grid-template-columns: 1fr; }
  .detail-cta-row { flex-direction: column; }
  .product-nav-tabs { overflow-x: auto; gap: 16px; font-size: 14px; }
}

/* =====================================================
   TOP NEWS TICKER BAR (MATCHING USER REFERENCE IMAGE)
   ===================================================== */
.v2-news-ticker-bar {
  background: linear-gradient(90deg, #1E40AF 0%, #2563EB 50%, #1D4ED8 100%);
  color: #FFFFFF;
  font-size: 13px;
  height: 38px;
  display: flex;
  align-items: center;
  overflow: visible;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  position: relative;
  z-index: 1001;
}

.ticker-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 16px;
}

.ticker-left {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.ticker-date {
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.9);
  white-space: nowrap;
}

.ticker-badge {
  background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.4);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.ticker-marquee-wrapper {
  flex: 1;
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(90deg, transparent 0%, #000 5%, #000 95%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 5%, #000 95%, transparent 100%);
}

.ticker-marquee-content {
  display: flex;
  align-items: center;
  gap: 40px;
  white-space: nowrap;
  animation: marquee-scroll 28s linear infinite;
  width: max-content;
}

.ticker-marquee-content:hover {
  animation-play-state: paused;
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.95);
  font-size: 13px;
}

.ticker-item strong {
  color: #FFF;
  font-weight: 700;
}

.ticker-right {
  flex-shrink: 0;
}

.ticker-hotline {
  color: #FACC15;
  font-weight: 800;
  font-size: 13px;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

/* =====================================================
   VISUAL LED SCREEN SIMULATOR
   ===================================================== */
.screen-sim-container {
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 20px;
  margin-top: 24px;
}
.screen-sim-title {
  font-size: 14px;
  font-weight: 700;
  color: #60A5FA;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.screen-sim-stage {
  height: 220px;
  background: radial-gradient(circle at 50% 100%, #1e293b 0%, #050810 100%);
  border-radius: 8px;
  border: 1px dashed rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 16px;
  position: relative;
  gap: 24px;
  overflow: hidden;
}
.sim-human-figure {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #94A3B8;
  font-size: 11px;
  gap: 4px;
  z-index: 2;
  flex-shrink: 0;
}
.sim-human-icon {
  font-size: 56px;
  color: #64748B;
  line-height: 1;
}
.sim-screen-box {
  background: linear-gradient(135deg, rgba(37,99,235,0.3), rgba(139,92,246,0.3));
  border: 2px solid #3B82F6;
  border-radius: 4px;
  box-shadow: 0 0 25px rgba(59,130,246,0.4);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #FFF;
  font-weight: 700;
  font-size: 12px;
  text-shadow: 0 1px 4px rgba(0,0,0,0.8);
  transition: all 0.3s ease;
  position: relative;
  z-index: 2;
  min-width: 60px;
  min-height: 40px;
}
.sim-screen-box::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(0deg, rgba(255,255,255,0.1) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.1) 1px, transparent 1px);
  background-size: 10px 10px;
}

/* =====================================================
   BEFORE / AFTER SLIDER
   ===================================================== */
.ba-slider-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
  border: 1px solid rgba(255,255,255,0.1);
  user-select: none;
}
.ba-img-after {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.ba-img-before-wrap {
  position: absolute;
  top: 0; left: 0; bottom: 0;
  width: 50%;
  overflow: hidden;
  z-index: 2;
  border-right: 3px solid #3B82F6;
}
.ba-img-before {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.6) blur(1px) contrast(0.8);
}
.ba-badge {
  position: absolute;
  top: 20px;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 800;
  backdrop-filter: blur(10px);
  z-index: 3;
  letter-spacing: 0.5px;
}
.ba-badge-left {
  left: 20px;
  background: rgba(239,68,68,0.85);
  color: #FFF;
  border: 1px solid rgba(255,255,255,0.3);
}
.ba-badge-right {
  right: 20px;
  background: rgba(16,185,129,0.85);
  color: #FFF;
  border: 1px solid rgba(255,255,255,0.3);
}
.ba-handle {
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 4px;
  background: #FFF;
  z-index: 4;
  cursor: ew-resize;
  transform: translateX(-50%);
  box-shadow: 0 0 12px rgba(0,0,0,0.5);
}
.ba-handle-button {
  width: 44px;
  height: 44px;
  background: #3B82F6;
  border: 3px solid #FFF;
  border-radius: 50%;
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFF;
  font-size: 14px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.4);
}

/* =====================================================
   PRODUCT COMPARISON BAR & MODAL
   ===================================================== */
.compare-bar-float {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: rgba(15, 23, 42, 0.95);
  border: 1px solid rgba(59, 130, 246, 0.4);
  backdrop-filter: blur(20px);
  border-radius: 40px;
  padding: 12px 28px;
  display: flex;
  align-items: center;
  gap: 20px;
  z-index: 1000;
  box-shadow: 0 10px 30px rgba(0,0,0,0.6);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.compare-bar-float.active {
  transform: translateX(-50%) translateY(0);
}
.compare-bar-info {
  font-size: 14px;
  color: #FFF;
  font-weight: 600;
}
.compare-bar-info span {
  color: #60A5FA;
  font-weight: 800;
}

.compare-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 16, 0.85);
  backdrop-filter: blur(16px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.compare-modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}
.compare-modal-box {
  background: #0F172A;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 20px;
  width: 100%;
  max-width: 1000px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px;
  position: relative;
  box-shadow: 0 25px 50px rgba(0,0,0,0.7);
}
.compare-modal-close {
  position: absolute;
  top: 20px; right: 20px;
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  border: none;
  color: #FFF;
  font-size: 18px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.compare-modal-close:hover { background: #EF4444; }

.compare-grid-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 24px;
}
.compare-grid-table th, .compare-grid-table td {
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-size: 14px;
}
.compare-grid-table th {
  text-align: left;
  color: #94A3B8;
  width: 22%;
  background: rgba(30,41,59,0.5);
}
.compare-grid-table td {
  color: #FFF;
  font-weight: 600;
}

/* =====================================================
   QUICK ZALO QUOTE DRAWER
   ===================================================== */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(5,8,16,0.75);
  backdrop-filter: blur(8px);
  z-index: 2500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.drawer-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}
.drawer-panel {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  width: 100%;
  max-width: 440px;
  background: #0F172A;
  border-left: 1px solid rgba(255,255,255,0.15);
  z-index: 2600;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  padding: 32px;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  box-shadow: -10px 0 40px rgba(0,0,0,0.6);
}
.drawer-panel.active {
  transform: translateX(0);
}
.drawer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding-bottom: 16px;
}
.drawer-title {
  font-size: 20px;
  font-weight: 800;
  color: #FFF;
  display: flex;
  align-items: center;
  gap: 10px;
}

/* =====================================================
   PRINTABLE QUOTATION SHEET (@media print & Modal)
   ===================================================== */
@media print {
  body * {
    visibility: hidden;
  }
  #print-quote-modal, #print-quote-modal * {
    visibility: visible;
  }
  #print-quote-modal {
    position: absolute;
    left: 0; top: 0;
    width: 100%;
    background: #FFF !important;
    color: #000 !important;
    padding: 0 !important;
  }
  .no-print { display: none !important; }
}

.printable-quote-sheet {
  background: #FFFFFF;
  color: #1E293B;
  border-radius: 12px;
  padding: 40px;
  font-family: 'Be Vietnam Pro', sans-serif;
  max-width: 850px;
  margin: 0 auto;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}
.p-quote-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid #2563EB;
  padding-bottom: 20px;
  margin-bottom: 24px;
}
.p-quote-brand {
  font-size: 22px;
  font-weight: 900;
  color: #1E40AF;
  line-height: 1.1;
}
.p-quote-sub {
  font-size: 11px;
  color: #64748B;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.p-quote-meta {
  text-align: right;
  font-size: 12px;
  color: #475569;
}
.p-quote-title {
  text-align: center;
  font-size: 22px;
  font-weight: 800;
  color: #0F172A;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.p-quote-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
}
.p-quote-table th {
  background: #F1F5F9;
  color: #1E293B;
  font-weight: 700;
  text-align: left;
  padding: 10px 12px;
  font-size: 12px;
  border: 1px solid #CBD5E1;
}
.p-quote-table td {
  padding: 10px 12px;
  font-size: 13px;
  border: 1px solid #E2E8F0;
  color: #334155;
}
.p-quote-total-row td {
  font-weight: 800;
  font-size: 15px;
  background: #EFF6FF;
  color: #1D4ED8;
}

/* =====================================================
   COMPANY PROFILE & NEWS PAGES CUSTOM STYLES
   ===================================================== */
.profile-cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 32px;
}
.profile-cert-card {
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  transition: all 0.3s;
}
.profile-cert-card:hover {
  border-color: #3B82F6;
  transform: translateY(-4px);
}
.news-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}
.news-card {
  background: rgba(30, 41, 59, 0.4);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 14px;
  overflow: hidden;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-6px);
  border-color: rgba(59,130,246,0.4);
  box-shadow: 0 12px 30px rgba(0,0,0,0.5);
}
.news-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}
.news-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.news-category {
  font-size: 11px;
  font-weight: 800;
  color: #60A5FA;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.news-title {
  font-size: 16px;
  font-weight: 700;
  color: #FFF;
  line-height: 1.4;
  margin-bottom: 10px;
}
.news-excerpt {
  font-size: 13px;
  color: #94A3B8;
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

/* =====================================================
   MULTI-LANGUAGE SWITCHER DROPDOWN (VI / EN / ZH)
   ===================================================== */
.v2-lang-switcher {
  position: relative;
  display: inline-block;
}
.lang-select-btn {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #FFFFFF;
  border-radius: 9999px;
  padding: 4px 14px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}
.lang-select-btn:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: #FFFFFF;
}
.lang-code-pill {
  font-size: 10px;
  font-weight: 800;
  color: #94A3B8;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.lang-menu-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #0B1329;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.65);
  padding: 8px;
  display: none;
  flex-direction: column;
  gap: 4px;
  z-index: 99999;
  min-width: 175px;
}
.v2-lang-switcher:hover .lang-menu-dropdown,
.v2-lang-switcher.active .lang-menu-dropdown {
  display: flex;
}
.lang-option-btn {
  background: transparent;
  border: none;
  color: #94A3B8;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 600;
  text-align: left;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: all 0.2s ease;
  width: 100%;
}
.lang-option-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
}
.lang-option-btn.active {
  background: #1D4ED8 !important;
  color: #FFFFFF !important;
  font-weight: 800;
}
.lang-code-badge {
  font-size: 11px;
  font-weight: 800;
  color: #64748B;
  width: 22px;
  display: inline-block;
  text-transform: uppercase;
}
.lang-option-btn.active .lang-code-badge {
  color: #93C5FD;
}

.ticker-hotline:hover {
  color: #FEF08A;
}

@keyframes marquee-scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

@media (max-width: 992px) {
  .ticker-date { display: none; }
}

@media (max-width: 600px) {
  .ticker-left { display: none; }
}

/* =====================================================
   ENTERPRISE FEATURES (5 NEW UPGRADES)
   ===================================================== */

/* 1. Distance & Pitch Recommender Widget */
.distance-recommender-card {
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-xl);
  margin-top: 32px;
}
.distance-slider-range {
  width: 100%;
  accent-color: var(--primary);
  height: 8px;
  border-radius: 4px;
  background: var(--bg-700);
  cursor: pointer;
}
.distance-readout-pill {
  background: rgba(37,99,235,0.2);
  border: 1px solid rgba(37,99,235,0.4);
  color: var(--primary-light);
  font-weight: 800;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.pitch-recommend-badge {
  background: linear-gradient(135deg, #10B981 0%, #059669 100%);
  color: #FFFFFF;
  font-weight: 900;
  font-size: 20px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  display: inline-block;
  box-shadow: 0 8px 20px rgba(16,185,129,0.3);
}

/* 2. Virtual Room LED Overlay Simulator */
.room-simulator-box {
  background: #090D16;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-top: 32px;
}
.room-canvas-wrapper {
  position: relative;
  width: 100%;
  height: 380px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.15);
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
}
.virtual-led-overlay {
  position: absolute;
  border: 3px solid #3B82F6;
  background: rgba(37, 99, 235, 0.4);
  box-shadow: 0 0 30px rgba(59, 130, 246, 0.6), inset 0 0 20px rgba(255,255,255,0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #FFF;
  font-weight: 800;
  cursor: move;
  border-radius: 4px;
  transition: box-shadow 0.2s ease;
}
.virtual-led-overlay:hover {
  box-shadow: 0 0 45px rgba(59, 130, 246, 0.8), inset 0 0 30px rgba(255,255,255,0.5);
}

/* 3. Energy Saving & ROI Calculator */
.roi-calculator-card {
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-top: 32px;
}
.roi-stat-box {
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
}
.roi-stat-val {
  font-size: 24px;
  font-weight: 900;
  color: #FBBF24;
}

/* 4. Interactive E-Brochure Viewer Modal */
.ebrochure-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.85);
  backdrop-filter: blur(12px);
  z-index: 999999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.ebrochure-modal.active { display: flex; }
.ebrochure-container {
  width: 90%;
  max-width: 1000px;
  height: 85vh;
  background: #0F172A;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 25px 50px rgba(0,0,0,0.8);
}

/* 5. Live Project Progress Tracking Timeline */
.project-tracking-card {
  background: var(--bg-800);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-top: 32px;
}
.tracking-timeline-list {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  margin-top: 24px;
  position: relative;
}
.tracking-step-item {
  text-align: center;
  position: relative;
}
.tracking-step-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-700);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-weight: 800;
  margin: 0 auto 10px;
  transition: all 0.3s ease;
}
.tracking-step-item.completed .tracking-step-circle {
  background: #10B981;
  border-color: #10B981;
  color: #FFF;
  box-shadow: 0 0 15px rgba(16,185,129,0.5);
}
.tracking-step-item.active .tracking-step-circle {
  background: #2563EB;
  border-color: #60A5FA;
  color: #FFF;
  box-shadow: 0 0 20px rgba(37,99,235,0.8);
}
@media (max-width: 768px) {
  .tracking-timeline-list { grid-template-columns: repeat(2, 1fr); }
}

/* =====================================================
   BANNER TRUST & GUARANTEE SIDEBAR WIDGET (MATCHING REFERENCE IMAGE)
   ===================================================== */
.banner-trust-widget {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  padding: 24px 20px;
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
  color: #1E293B;
  width: 100%;
  max-width: 360px;
  box-sizing: border-box;
}
.banner-trust-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}
.banner-trust-header::before,
.banner-trust-header::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #CBD5E1;
}
.banner-trust-title {
  font-size: 14px;
  font-weight: 800;
  color: #0284C7;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  white-space: nowrap;
}
.banner-trust-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px 14px;
  padding-bottom: 22px;
  border-bottom: 1px solid #E2E8F0;
}
.trust-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.trust-icon-circle {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  border: 2px solid #38BDF8;
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.25);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #0284C7;
  margin-bottom: 10px;
  background: #F0F9FF;
  position: relative;
  transition: all 0.3s ease;
}
.trust-item:hover .trust-icon-circle {
  transform: translateY(-3px) scale(1.05);
  background: #E0F2FE;
  border-color: #0284C7;
  box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.3);
}
.trust-icon-circle i {
  font-size: 26px;
  color: #0284C7;
}
.trust-badge-text {
  font-size: 7.5px;
  font-weight: 900;
  line-height: 1;
  text-transform: uppercase;
  margin-top: 3px;
  color: #0284C7;
  letter-spacing: -0.2px;
}
.trust-item-label {
  font-size: 13px;
  font-weight: 700;
  color: #334155;
  line-height: 1.35;
}
.banner-trust-contact {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 18px;
}
.contact-phone-circle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid #EF4444;
  background: #FEF2F2;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #EF4444;
  font-size: 22px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.25);
}
.contact-info-text {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}
.contact-info-label {
  font-size: 14px;
  font-weight: 800;
  color: #1E293B;
}
.contact-info-phone {
  font-size: 16px;
  font-weight: 900;
  color: #EF4444;
}