/* ============================================================
   BảoHiểmSố - Insurance Website Design System
   Font: Be Vietnam Pro (Google Fonts)
   ============================================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

/* ---------- CSS Variables ---------- */
:root {
  /* Colors */
  --primary: #0052CC;
  --primary-dark: #003D99;
  --primary-light: #E8F0FE;
  --secondary: #FF5722;
  --secondary-light: #FFF3EF;
  --accent: #00BFA5;
  --accent-light: #E0F7F4;
  --success: #00C853;
  --warning: #FFB300;

  /* Neutrals */
  --white: #FFFFFF;
  --gray-50: #F8FAFF;
  --gray-100: #F1F4F9;
  --gray-200: #E2E8F0;
  --gray-300: #CBD5E1;
  --gray-400: #94A3B8;
  --gray-500: #64748B;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1E293B;
  --gray-900: #0F172A;

  /* Typography */
  --font-main: 'Be Vietnam Pro', sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Layout */
  --container: 1200px;
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 10px 25px rgba(0,82,204,0.10), 0 4px 10px rgba(0,0,0,0.06);
  --shadow-lg: 0 20px 50px rgba(0,82,204,0.15), 0 8px 20px rgba(0,0,0,0.06);
  --shadow-card: 0 2px 20px rgba(0,82,204,0.08);

  /* Transitions */
  --transition: all 0.25s ease;
  --transition-slow: all 0.4s ease;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-main);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
ul, ol { list-style: none; }
input, select, textarea { font-family: inherit; }

/* ---------- Container ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

/* ---------- Typography ---------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--primary-light);
  color: var(--primary);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}
.section-label svg { width: 16px; height: 16px; }
.section-title {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl));
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.2;
  margin-bottom: var(--space-4);
}
.section-title span { color: var(--primary); }
.section-subtitle {
  font-size: var(--text-lg);
  color: var(--gray-500);
  max-width: 600px;
  line-height: 1.7;
}
.section-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin-bottom: var(--space-12);
}
.section-header.center {
  align-items: center;
  text-align: center;
}
.section-header.center .section-subtitle { margin: 0 auto; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
  border: 2px solid transparent;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(0,82,204,0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,82,204,0.45);
}
.btn-secondary {
  background: linear-gradient(135deg, var(--secondary) 0%, #E64A19 100%);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(255,87,34,0.35);
}
.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255,87,34,0.45);
}
.btn-outline {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-2px);
}
.btn-ghost {
  color: var(--primary);
  background: var(--primary-light);
}
.btn-ghost:hover {
  background: var(--primary);
  color: var(--white);
}
.btn-lg { padding: 1rem 2rem; font-size: var(--text-lg); }
.btn-sm { padding: 0.5rem 1rem; font-size: var(--text-sm); }

/* ---------- Topbar ---------- */
.topbar {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.85);
  font-size: var(--text-sm);
  padding: var(--space-2) 0;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}
.topbar-left, .topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}
.topbar a {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  color: rgba(255,255,255,0.85);
  transition: var(--transition);
}
.topbar a:hover { color: var(--white); }
.topbar svg { width: 14px; height: 14px; }

/* ---------- Header / Navbar ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--white);
  border-bottom: 1px solid var(--gray-100);
  transition: var(--transition-slow);
}
.header.scrolled {
  box-shadow: var(--shadow-md);
}
.navbar {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-4) 0;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--primary);
}
.nav-logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
}
.nav-logo-icon svg { width: 24px; height: 24px; color: var(--white); }
.nav-logo span.dot { color: var(--secondary); }
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex: 1;
}
.nav-item {
  position: relative;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-700);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
}
.nav-link svg { width: 14px; height: 14px; transition: transform 0.2s; }
.nav-item:hover .nav-link svg { transform: rotate(180deg); }

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  min-width: 220px;
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-100);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: var(--transition);
  z-index: 100;
}
.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.nav-dropdown a {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--gray-700);
  transition: var(--transition);
}
.nav-dropdown a:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.nav-dropdown a .icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 16px;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-left: auto;
}
.phone-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 600;
  font-size: var(--text-sm);
  transition: var(--transition);
}
.phone-btn:hover { background: var(--accent); color: var(--white); }
.phone-btn svg { width: 16px; height: 16px; }

/* Mobile Menu Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gray-700);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---------- Hero Section ---------- */
.hero {
  background: linear-gradient(135deg, #EEF2FF 0%, #E0F2FE 50%, #F0FDF4 100%);
  padding: var(--space-20) 0 var(--space-16);
  overflow: hidden;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,82,204,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -150px;
  left: -80px;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0,191,165,0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--white);
  border: 1px solid var(--gray-200);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--gray-600);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-sm);
}
.hero-badge .dot {
  width: 8px; height: 8px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.3); }
}
.hero-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--gray-900);
  margin-bottom: var(--space-5);
}
.hero-title span {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--gray-500);
  margin-bottom: var(--space-8);
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-bottom: var(--space-10);
}
.hero-trust {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--gray-600);
}
.trust-item svg { width: 18px; height: 18px; color: var(--success); }
.trust-item strong { color: var(--gray-800); }

/* Hero Quote Card */
.hero-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
  position: relative;
}
.hero-card::before {
  content: '';
  position: absolute;
  top: -2px; left: -2px; right: -2px; bottom: -2px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: calc(var(--radius-xl) + 2px);
  z-index: -1;
  opacity: 0.3;
}
.hero-card-title {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-6);
  text-align: center;
}
.hero-card-title span { color: var(--primary); }
.form-group { margin-bottom: var(--space-4); }
.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: var(--space-2);
}
.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: var(--text-base);
  color: var(--gray-800);
  background: var(--gray-50);
  transition: var(--transition);
  outline: none;
}
.form-control:focus {
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(0,82,204,0.1);
}
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748B' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.hero-card .btn { width: 100%; margin-top: var(--space-2); }
.hero-card-footer {
  text-align: center;
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  color: var(--gray-500);
}
.hero-card-footer a { color: var(--primary); font-weight: 500; }

/* ---------- Products Section ---------- */
.products {
  padding: var(--space-20) 0;
  background: var(--white);
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.product-card {
  background: var(--white);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: var(--transition-slow);
  text-decoration: none;
  display: block;
  position: relative;
  overflow: hidden;
}
.product-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  opacity: 0;
  transition: var(--transition-slow);
}
.product-card:hover {
  border-color: transparent;
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.product-card:hover::before { opacity: 1; }
.product-card:hover .product-icon { background: rgba(255,255,255,0.2); }
.product-card:hover .product-name { color: var(--white); }
.product-card:hover .product-desc { color: rgba(255,255,255,0.8); }
.product-card:hover .product-cta { color: var(--white); }
.product-card:hover .product-cta svg { transform: translateX(4px); }
.product-card > * { position: relative; z-index: 1; }
.product-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: var(--space-5);
  transition: var(--transition);
}
.product-icon.blue { background: var(--primary-light); }
.product-icon.orange { background: var(--secondary-light); }
.product-icon.green { background: var(--accent-light); }
.product-icon.yellow { background: #FFF8E1; }
.product-icon.purple { background: #F3E5F5; }
.product-icon.teal { background: #E0F7FA; }
.product-name {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-3);
  transition: var(--transition);
}
.product-desc {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: 1.7;
  margin-bottom: var(--space-5);
  transition: var(--transition);
}
.product-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}
.product-feature {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--gray-600);
  transition: var(--transition);
}
.product-card:hover .product-feature { color: rgba(255,255,255,0.85); }
.product-feature svg { width: 14px; height: 14px; color: var(--success); flex-shrink: 0; }
.product-card:hover .product-feature svg { color: rgba(255,255,255,0.9); }
.product-cta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
}
.product-cta svg { width: 16px; height: 16px; transition: transform 0.2s; }
.product-tag {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: var(--secondary);
  color: var(--white);
  font-size: 11px;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  z-index: 2;
}
.product-card:hover .product-tag { background: rgba(255,255,255,0.25); }

/* ---------- Stats Section ---------- */
.stats {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, #1A0066 100%);
  padding: var(--space-16) 0;
  position: relative;
  overflow: hidden;
}
.stats::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: rgba(255,255,255,0.05);
  border-radius: 50%;
}
.stats .container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  position: relative;
  z-index: 1;
}
.stat-item { text-align: center; }
.stat-number {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1;
  margin-bottom: var(--space-2);
}
.stat-number span { color: #FFD740; }
.stat-label {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.75);
  font-weight: 400;
}
.stat-divider {
  width: 1px;
  background: rgba(255,255,255,0.15);
  align-self: stretch;
}

/* ---------- Why Us Section ---------- */
.why-us {
  padding: var(--space-20) 0;
  background: var(--gray-50);
}
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}
.why-image-wrap {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.why-image-placeholder {
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent-light) 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
}
.why-illustration {
  font-size: 8rem;
  text-align: center;
}
.why-badge {
  position: absolute;
  bottom: var(--space-6);
  left: var(--space-6);
  background: var(--white);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.why-badge-icon { font-size: 2rem; }
.why-badge-text strong {
  display: block;
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--primary);
}
.why-badge-text span {
  font-size: var(--text-xs);
  color: var(--gray-500);
}
.why-content .section-header { margin-bottom: var(--space-8); }
.why-features {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.why-feature {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}
.why-feature-icon {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: var(--white);
  box-shadow: var(--shadow-sm);
}
.why-feature-body h3 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-1);
}
.why-feature-body p {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: 1.6;
}

/* ---------- Brands Section ---------- */
.brands {
  padding: var(--space-16) 0;
  background: var(--white);
  border-top: 1px solid var(--gray-100);
  border-bottom: 1px solid var(--gray-100);
}
.brands-header {
  text-align: center;
  margin-bottom: var(--space-10);
}
.brands-header p {
  font-size: var(--text-sm);
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
}
.brands-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.brand-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-5) var(--space-8);
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--gray-200);
  transition: var(--transition);
  min-width: 140px;
  text-align: center;
}
.brand-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.brand-logo {
  font-size: var(--text-2xl);
  font-weight: 900;
  letter-spacing: -1px;
}
.brand-name {
  font-size: var(--text-xs);
  color: var(--gray-500);
  font-weight: 500;
}

/* ---------- Articles Section ---------- */
.articles {
  padding: var(--space-20) 0;
  background: var(--gray-50);
}
.articles-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: var(--space-12);
  flex-wrap: wrap;
  gap: var(--space-4);
}
.articles-header .section-header { margin-bottom: 0; }
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}
.article-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition-slow);
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}
.article-thumb {
  height: 200px;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
  position: relative;
  overflow: hidden;
}
.article-thumb-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(0,82,204,0.15) 100%);
}
.article-category-badge {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  background: var(--primary);
  color: var(--white);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.article-body {
  padding: var(--space-6);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  font-size: var(--text-xs);
  color: var(--gray-500);
}
.article-meta svg { width: 13px; height: 13px; }
.article-meta .dot { width: 3px; height: 3px; background: var(--gray-400); border-radius: 50%; }
.article-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.5;
  margin-bottom: var(--space-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: var(--transition);
}
.article-card:hover .article-title { color: var(--primary); }
.article-excerpt {
  font-size: var(--text-sm);
  color: var(--gray-500);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
  margin-bottom: var(--space-4);
}
.article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--gray-100);
}
.article-read-time {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  color: var(--gray-500);
}
.article-read-time svg { width: 13px; height: 13px; }
.article-link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
}
.article-link:hover { gap: var(--space-2); }
.article-link svg { width: 14px; height: 14px; transition: transform 0.2s; }
.article-link:hover svg { transform: translateX(3px); }

/* Loading spinner */
.articles-loading {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-16);
  color: var(--gray-400);
}
.spinner {
  width: 40px; height: 40px;
  border: 3px solid var(--gray-200);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto var(--space-4);
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- FAQ Section ---------- */
.faq {
  padding: var(--space-20) 0;
  background: var(--white);
}
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
  align-items: start;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.faq-item {
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,82,204,0.08);
}
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-5);
  cursor: pointer;
  font-weight: 600;
  color: var(--gray-800);
  font-size: var(--text-base);
  transition: var(--transition);
  background: var(--white);
  width: 100%;
  text-align: left;
}
.faq-item.active .faq-question { color: var(--primary); }
.faq-question .icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}
.faq-item.active .faq-question .icon {
  background: var(--primary);
  color: var(--white);
  transform: rotate(45deg);
}
.faq-question .icon svg { width: 14px; height: 14px; }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-item.active .faq-answer { max-height: 400px; }
.faq-answer-inner {
  padding: 0 var(--space-5) var(--space-5);
  font-size: var(--text-sm);
  color: var(--gray-600);
  line-height: 1.75;
  border-top: 1px solid var(--gray-100);
  padding-top: var(--space-4);
}
.faq-cta-card {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  color: var(--white);
  text-align: center;
  position: sticky;
  top: 100px;
}
.faq-cta-icon { font-size: 3rem; margin-bottom: var(--space-4); }
.faq-cta-card h3 {
  font-size: var(--text-2xl);
  font-weight: 800;
  margin-bottom: var(--space-3);
}
.faq-cta-card p {
  color: rgba(255,255,255,0.8);
  margin-bottom: var(--space-6);
  font-size: var(--text-sm);
  line-height: 1.7;
}
.faq-cta-card .btn {
  background: var(--white);
  color: var(--primary);
  width: 100%;
  margin-bottom: var(--space-3);
}
.faq-cta-card .btn:hover { background: var(--gray-100); }
.faq-cta-card .btn-outline-white {
  border: 2px solid rgba(255,255,255,0.5);
  color: var(--white);
  background: transparent;
  width: 100%;
  padding: 0.75rem;
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  font-weight: 600;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}
.faq-cta-card .btn-outline-white:hover { background: rgba(255,255,255,0.1); }

/* ---------- CTA Section ---------- */
.cta-section {
  padding: var(--space-20) 0;
  background: linear-gradient(135deg, #EEF2FF 0%, #E0F2FE 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '🛡️';
  position: absolute;
  font-size: 20rem;
  opacity: 0.04;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section .section-title { max-width: 700px; margin: 0 auto var(--space-5); }
.cta-section .section-subtitle { margin: 0 auto var(--space-8); }
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--gray-900);
  color: rgba(255,255,255,0.75);
  padding: var(--space-16) 0 0;
}
.footer-main {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand .nav-logo {
  color: var(--white);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xl);
  font-weight: 800;
}
.footer-brand p {
  font-size: var(--text-sm);
  line-height: 1.7;
  margin-bottom: var(--space-6);
  max-width: 300px;
}
.footer-social {
  display: flex;
  gap: var(--space-3);
}
.social-btn {
  width: 38px; height: 38px;
  border-radius: var(--radius);
  background: rgba(255,255,255,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition);
  color: rgba(255,255,255,0.75);
}
.social-btn:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-3px);
}
.footer-col h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-5);
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.footer-col ul li a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.65);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}
.footer-col ul li a:hover {
  color: var(--white);
  padding-left: var(--space-2);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-5) 0;
  flex-wrap: wrap;
  gap: var(--space-3);
}
.footer-copyright { font-size: var(--text-sm); color: rgba(255,255,255,0.5); }
.footer-legal {
  display: flex;
  gap: var(--space-5);
}
.footer-legal a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.5);
  transition: var(--transition);
}
.footer-legal a:hover { color: var(--white); }

/* ---------- Blog Listing Page ---------- */
.page-hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: var(--space-16) 0;
  color: var(--white);
  text-align: center;
}
.page-hero h1 {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-5xl));
  font-weight: 800;
  margin-bottom: var(--space-4);
}
.page-hero p {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.8);
  max-width: 600px;
  margin: 0 auto;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.65);
  justify-content: center;
  margin-bottom: var(--space-4);
}
.breadcrumb a { color: rgba(255,255,255,0.75); transition: var(--transition); }
.breadcrumb a:hover { color: var(--white); }
.breadcrumb svg { width: 12px; height: 12px; }

.blog-section {
  padding: var(--space-16) 0;
  background: var(--gray-50);
}
.blog-filters {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-8);
}
.filter-btn {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  border: 1.5px solid var(--gray-200);
  background: var(--white);
  color: var(--gray-600);
  cursor: pointer;
  transition: var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-10);
}
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.page-btn {
  min-width: 40px; height: 40px;
  border-radius: var(--radius);
  border: 1.5px solid var(--gray-200);
  background: var(--white);
  color: var(--gray-600);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-3);
}
.page-btn:hover, .page-btn.active {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* ---------- Single Article Page ---------- */
.article-page { padding: var(--space-12) 0; background: var(--gray-50); }
.article-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: var(--space-8);
  align-items: start;
}
.article-main {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.article-hero-img {
  height: 300px;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
}
.article-content-wrap {
  padding: var(--space-8);
}
.article-header { margin-bottom: var(--space-6); }
.article-header .article-meta {
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.article-header h1 {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-3xl));
  font-weight: 800;
  color: var(--gray-900);
  line-height: 1.3;
  margin-bottom: var(--space-4);
}
.article-intro {
  font-size: var(--text-lg);
  color: var(--gray-600);
  line-height: 1.7;
  padding: var(--space-5);
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
}
.article-body { margin-top: var(--space-6); }
.article-body h2 {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--gray-900);
  margin: var(--space-8) 0 var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--gray-100);
}
.article-body h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--primary);
  margin: var(--space-6) 0 var(--space-3);
}
.article-body p {
  font-size: var(--text-base);
  color: var(--gray-700);
  line-height: 1.8;
  margin-bottom: var(--space-4);
}
.article-body ul, .article-body ol {
  margin: var(--space-4) 0 var(--space-4) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li {
  font-size: var(--text-base);
  color: var(--gray-700);
  line-height: 1.7;
}
.article-body strong { color: var(--gray-900); }
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--gray-100);
}
.article-tag {
  padding: var(--space-1) var(--space-3);
  background: var(--gray-100);
  color: var(--gray-600);
  font-size: var(--text-xs);
  font-weight: 500;
  border-radius: var(--radius-full);
  transition: var(--transition);
}
.article-tag:hover { background: var(--primary-light); color: var(--primary); }
.article-share {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-6);
  padding: var(--space-5);
  background: var(--gray-50);
  border-radius: var(--radius);
}
.article-share span { font-size: var(--text-sm); font-weight: 600; color: var(--gray-600); }
.share-btn {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: var(--transition);
  border: 1.5px solid transparent;
}
.share-btn.fb { background: #1877F2; color: var(--white); }
.share-btn.zl { background: #0068FF; color: var(--white); }
.share-btn.tw { background: #1DA1F2; color: var(--white); }
.share-btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

/* Sidebar */
.article-sidebar { display: flex; flex-direction: column; gap: var(--space-5); }
.sidebar-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}
.sidebar-card-title {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--primary-light);
}
.sidebar-cta {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--white);
}
.sidebar-cta .sidebar-card-title { color: var(--white); border-bottom-color: rgba(255,255,255,0.2); }
.sidebar-cta p { font-size: var(--text-sm); color: rgba(255,255,255,0.85); margin-bottom: var(--space-4); line-height: 1.6; }
.sidebar-cta .btn { background: var(--white); color: var(--primary); width: 100%; }
.related-articles { display: flex; flex-direction: column; gap: var(--space-4); }
.related-article-item {
  display: flex;
  gap: var(--space-3);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--gray-100);
}
.related-article-item:last-child { border-bottom: none; padding-bottom: 0; }
.related-thumb {
  width: 70px; height: 70px;
  border-radius: var(--radius-sm);
  background: var(--primary-light);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
}
.related-info a {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--gray-800);
  line-height: 1.4;
  display: block;
  margin-bottom: var(--space-1);
  transition: var(--transition);
}
.related-info a:hover { color: var(--primary); }
.related-info span {
  font-size: var(--text-xs);
  color: var(--gray-500);
}
.toc { display: flex; flex-direction: column; gap: var(--space-2); }
.toc a {
  font-size: var(--text-sm);
  color: var(--gray-600);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--gray-200);
  transition: var(--transition);
  display: block;
}
.toc a:hover, .toc a.active {
  background: var(--primary-light);
  color: var(--primary);
  border-left-color: var(--primary);
}

/* ---------- Animations ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

.fade-up:nth-child(2) { transition-delay: 0.1s; }
.fade-up:nth-child(3) { transition-delay: 0.2s; }
.fade-up:nth-child(4) { transition-delay: 0.3s; }
.fade-up:nth-child(5) { transition-delay: 0.4s; }
.fade-up:nth-child(6) { transition-delay: 0.5s; }

/* ---------- Back to Top ---------- */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 46px; height: 46px;
  background: var(--primary);
  color: var(--white);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--primary-dark); transform: translateY(-3px); }
.back-to-top svg { width: 20px; height: 20px; }

/* ---------- Floating CTA ---------- */
.float-cta {
  position: fixed;
  bottom: var(--space-6);
  left: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  z-index: 999;
}
.float-btn {
  width: 52px; height: 52px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.float-btn:hover { transform: scale(1.1); }
.float-btn.zalo { background: #0068FF; }
.float-btn.phone { background: var(--success); }
.float-btn.msg { background: var(--secondary); }

/* ---------- Loading Skeleton ---------- */
.skeleton {
  background: linear-gradient(90deg, var(--gray-100) 25%, var(--gray-200) 50%, var(--gray-100) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}
@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ---------- Search Bar ---------- */
.search-wrap {
  position: relative;
  max-width: 500px;
  margin-bottom: var(--space-8);
}
.search-input {
  width: 100%;
  padding: 0.875rem 1.25rem 0.875rem 3.25rem;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-full);
  font-size: var(--text-base);
  color: var(--gray-800);
  background: var(--white);
  transition: var(--transition);
  outline: none;
}
.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,82,204,0.1);
}
.search-icon {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 20px; height: 20px;
  color: var(--gray-400);
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .stats .container { grid-template-columns: repeat(2, 1fr); }
  .stat-divider { display: none; }
  .footer-main { grid-template-columns: 1fr 1fr; gap: var(--space-8); }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { order: -1; }
  .sidebar-card.sticky { position: static; }
  .faq-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .topbar .topbar-right { display: none; }
  .nav-menu, .nav-cta { display: none; }
  .nav-toggle { display: flex; }
  .navbar { justify-content: space-between; }
  .hero .container { grid-template-columns: 1fr; }
  .hero-card { order: -1; }
  .hero-title { font-size: 2rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { justify-content: center; }
  .why-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .articles-grid, .blog-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-main { grid-template-columns: 1fr; }
  .articles-header { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  :root {
    --space-20: 3rem;
    --space-16: 2.5rem;
    --space-12: 2rem;
  }
  .brands-grid { gap: var(--space-3); }
  .brand-item { min-width: 100px; padding: var(--space-4); }
}

/* Mobile Nav */
.nav-mobile {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: var(--white);
  z-index: 9999;
  transform: translateX(-100%);
  transition: var(--transition-slow);
  overflow-y: auto;
  padding: var(--space-6);
}
.nav-mobile.open { transform: translateX(0); }
.nav-mobile-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--gray-100);
}
.nav-mobile-close {
  width: 40px; height: 40px;
  border-radius: var(--radius);
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.nav-mobile-close svg { width: 20px; height: 20px; }
.nav-mobile-menu {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-8);
}
.nav-mobile-link {
  display: flex;
  align-items: center;
  padding: var(--space-4);
  border-radius: var(--radius);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--gray-800);
  transition: var(--transition);
}
.nav-mobile-link:hover { background: var(--primary-light); color: var(--primary); }
.nav-mobile-submenu {
  padding-left: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.nav-mobile-submenu a {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  color: var(--gray-600);
  transition: var(--transition);
}
.nav-mobile-submenu a:hover { color: var(--primary); background: var(--primary-light); }
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 9998;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.nav-overlay.open { opacity: 1; visibility: visible; }

/* ============================================================
   CONTACT MODAL
   ============================================================ */
.contact-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 9900;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}
.contact-modal-overlay.open {
  opacity: 1;
  visibility: visible;
}
.contact-modal-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 480px;
  box-shadow: 0 32px 80px rgba(0,0,0,0.25);
  transform: translateY(20px) scale(0.97);
  transition: transform 0.3s ease;
  position: relative;
  overflow: hidden;
  max-height: 90vh;
  overflow-y: auto;
}
.contact-modal-overlay.open .contact-modal-card {
  transform: translateY(0) scale(1);
}
.modal-top-bar {
  background: linear-gradient(135deg, var(--primary) 0%, #0033aa 100%);
  padding: var(--space-8) var(--space-8) var(--space-6);
  color: var(--white);
  position: relative;
}
.modal-close-btn {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 32px; height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  transition: var(--transition);
}
.modal-close-btn:hover { background: rgba(255,255,255,0.28); }
.modal-close-btn svg { width: 16px; height: 16px; }
.modal-icon {
  width: 52px; height: 52px;
  background: rgba(255,255,255,0.15);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem;
  margin-bottom: var(--space-4);
}
.modal-top-bar h2 {
  font-size: var(--text-xl);
  font-weight: 800;
  margin-bottom: var(--space-2);
  color: var(--white);
}
.modal-notice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  background: rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-4);
  margin-top: var(--space-3);
}
.modal-notice svg { width: 15px; height: 15px; flex-shrink: 0; margin-top: 1px; }
.modal-notice p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.9);
  line-height: 1.5;
}
.modal-body {
  padding: var(--space-7) var(--space-8) var(--space-8);
}
.modal-form-group {
  margin-bottom: var(--space-5);
}
.modal-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: var(--space-2);
}
.modal-label svg { width: 14px; height: 14px; color: var(--primary); }
.modal-input {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-size: var(--text-base);
  font-family: var(--font-main);
  color: var(--gray-800);
  background: var(--gray-50);
  transition: var(--transition);
  outline: none;
}
.modal-input:focus {
  border-color: var(--primary);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(0,82,204,0.1);
}
.modal-submit-btn {
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--secondary) 0%, #E64A19 100%);
  color: var(--white);
  border: none;
  border-radius: var(--radius);
  font-size: var(--text-base);
  font-weight: 700;
  font-family: var(--font-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(255,87,34,0.35);
  margin-top: var(--space-6);
}
.modal-submit-btn:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255,87,34,0.45);
}
.modal-submit-btn:disabled { opacity: 0.7; cursor: not-allowed; }
.modal-submit-btn svg { width: 18px; height: 18px; }
.modal-success {
  text-align: center;
  padding: var(--space-8) var(--space-6);
}
.modal-success-icon {
  width: 72px; height: 72px;
  background: linear-gradient(135deg, #22C55E, #16A34A);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto var(--space-5);
  box-shadow: 0 8px 24px rgba(34,197,94,0.35);
}
.modal-success-icon svg { width: 36px; height: 36px; color: var(--white); }
.modal-success h3 {
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: var(--space-3);
}
.modal-success-msg {
  color: var(--gray-600);
  font-size: var(--text-sm);
  line-height: 1.7;
  background: var(--gray-50);
  border-radius: var(--radius);
  padding: var(--space-4);
  margin-bottom: var(--space-6);
}
.modal-success-msg strong { color: var(--primary); }
.modal-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-size: 11px;
  color: var(--gray-400);
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--gray-100);
}
.modal-trust svg { width: 13px; height: 13px; }
@keyframes spin-modal { to { transform: rotate(360deg); } }