/* ==========================================================================
   JIE CHU VIỆT NAM — DESIGN SYSTEM & STYLESHEET
   Sản phẩm máy phun bi, máy phun cát công nghiệp & hạt mài làm sạch bề mặt
   ========================================================================== */

:root {
  --primary: #0f172a;          /* Deep industrial navy slate */
  --primary-hover: #1e293b;
  --secondary: #0284c7;        /* Tech cyan blue */
  --secondary-hover: #0369a1;
  --accent: #f97316;           /* Energetic flame industrial orange */
  --accent-hover: #ea580c;
  --accent-glow: rgba(249, 115, 22, 0.35);
  --success: #16a34a;
  --zalo-color: #0068ff;
  
  --bg-body: #f8fafc;
  --bg-surface: #ffffff;
  --bg-subtle: #f1f5f9;
  --bg-dark: #090d16;
  --bg-dark-surface: #111827;
  
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --text-white: #ffffff;
  
  --border-color: #e2e8f0;
  --border-dark: #1f2937;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 10px 25px -5px var(--accent-glow);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

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

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

button, input, select, textarea {
  font-family: inherit;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ==========================================================================
   TOP BAR (THÔNG BÁO & CAM KẾT)
   ========================================================================== */
.top-bar {
  background: var(--bg-dark);
  color: #cbd5e1;
  font-size: 0.85rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.top-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.top-bar-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

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

.top-item i {
  color: var(--accent);
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.top-link {
  color: #e2e8f0;
  display: flex;
  align-items: center;
  gap: 6px;
}

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

/* ==========================================================================
   HEADER & NAVBAR
   ========================================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
  gap: 20px;
}

/* Brand Logo */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-icon {
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--accent) 0%, #b43403 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1.4rem;
  box-shadow: 0 4px 12px var(--accent-glow);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.5px;
  color: var(--primary);
  line-height: 1.1;
}

.brand-name span {
  color: var(--accent);
}

.brand-tagline {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 24px;
}

.nav-link {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
  padding: 8px 4px;
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: var(--accent);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
}

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

/* Nav Actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.search-bar-wrap {
  position: relative;
  width: 220px;
}

.search-input {
  width: 100%;
  padding: 9px 14px 9px 36px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-subtle);
  font-size: 0.88rem;
  transition: var(--transition);
  outline: none;
}

.search-input:focus {
  background: #ffffff;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  width: 260px;
}

.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
  pointer-events: none;
}

.btn-hotline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent) 0%, #ea580c 100%);
  color: #ffffff;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.92rem;
  box-shadow: var(--shadow-glow);
  white-space: nowrap;
}

.btn-hotline:hover {
  background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(234, 88, 12, 0.4);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-main);
  cursor: pointer;
}

/* ==========================================================================
   HERO SECTION (BANNER ĐẲNG CẤP CÔNG NGHIỆP)
   ========================================================================== */
.hero {
  position: relative;
  background: linear-gradient(135deg, #090e17 0%, #172554 50%, #0f172a 100%);
  color: #ffffff;
  padding: 80px 0 100px;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 15% 50%, rgba(249, 115, 22, 0.15), transparent 40%),
    radial-gradient(circle at 85% 30%, rgba(2, 132, 199, 0.2), transparent 45%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(249, 115, 22, 0.15);
  border: 1px solid rgba(249, 115, 22, 0.35);
  color: #fb923c;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 2.85rem;
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}

.hero-title span {
  background: linear-gradient(135deg, #ffedd5 0%, #fb923c 60%, #f97316 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.1rem;
  color: #cbd5e1;
  line-height: 1.65;
  margin-bottom: 32px;
  max-width: 580px;
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 36px;
}

.hero-feat-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: #e2e8f0;
  font-weight: 500;
}

.hero-feat-item i {
  color: #22c55e;
  font-size: 1.1rem;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--accent) 0%, #ea580c 100%);
  color: #ffffff;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1.05rem;
  box-shadow: 0 10px 25px -5px rgba(249, 115, 22, 0.45);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
  transform: translateY(-2px);
  box-shadow: 0 14px 28px -5px rgba(249, 115, 22, 0.55);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #ffffff;
  padding: 14px 26px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1.05rem;
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: #ffffff;
  transform: translateY(-2px);
}

/* Hero Showcase Card */
.hero-media {
  position: relative;
}

.hero-card-preview {
  background: rgba(17, 24, 39, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(16px);
  position: relative;
}

.hero-img-wrap {
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
  background: #000000;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.hero-card-preview:hover .hero-img-wrap img {
  transform: scale(1.04);
}

.hero-card-info {
  margin-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.hero-card-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
}

.hero-card-sub {
  font-size: 0.88rem;
  color: var(--accent);
  font-weight: 600;
}

.floating-trust-badge {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  border: 1px solid rgba(249, 115, 22, 0.4);
  padding: 14px 20px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-xl);
}

.badge-num {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.badge-text {
  font-size: 0.82rem;
  color: #cbd5e1;
  line-height: 1.3;
}

/* ==========================================================================
   STATS BAR
   ========================================================================== */
.stats-bar {
  background: #ffffff;
  padding: 30px 0;
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  border-right: 1px solid var(--border-color);
}

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

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--bg-subtle);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
}

.stat-val {
  font-family: var(--font-heading);
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ==========================================================================
   SECTION COMMON
   ========================================================================== */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}

.section-badge {
  display: inline-block;
  background: #ffedd5;
  color: var(--accent);
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 5px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  line-height: 1.25;
}

.section-title span {
  color: var(--accent);
}

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

/* ==========================================================================
   PRODUCT CATALOG SECTION (LƯỚI SẢN PHẨM & BỘ LỌC)
   ========================================================================== */
.catalog-section {
  background: var(--bg-body);
}

/* Category Filter Tabs */
.filter-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.tab-btn {
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}

.tab-btn .badge-count {
  background: var(--bg-subtle);
  color: var(--text-muted);
  font-size: 0.78rem;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 700;
  transition: var(--transition);
}

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

.tab-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.tab-btn.active .badge-count {
  background: var(--accent);
  color: #ffffff;
}

/* Active Search/Filter Notification */
.filter-status {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  padding: 12px 18px;
  background: #ffffff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.filter-result-count {
  font-weight: 600;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.filter-result-count strong {
  color: var(--primary);
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.product-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: #cbd5e1;
  box-shadow: 0 16px 30px -10px rgba(0, 0, 0, 0.12);
}

.product-thumb-wrap {
  position: relative;
  width: 100%;
  padding-top: 75%; /* 4:3 Aspect Ratio */
  background: #f8fafc;
  overflow: hidden;
}

.product-thumb-wrap img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 16px;
  transition: transform 0.4s ease;
}

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

.product-cat-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 23, 42, 0.85);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
  z-index: 2;
}

.product-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.4;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 2.8em;
}

.product-card:hover .product-title {
  color: var(--accent);
}

.product-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 3em;
}

.product-price-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  border-top: 1px dashed var(--border-color);
  margin-top: auto;
}

.product-price {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--accent);
}

.product-actions {
  display: flex;
  gap: 8px;
}

.btn-view-detail {
  padding: 8px 14px;
  background: var(--bg-subtle);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: var(--transition);
}

.btn-view-detail:hover {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}

.btn-call-order {
  padding: 8px 14px;
  background: var(--accent);
  color: #ffffff;
  border-radius: var(--radius-sm);
  font-size: 0.84rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-call-order:hover {
  background: var(--accent-hover);
  box-shadow: 0 4px 10px var(--accent-glow);
}

/* Pagination / Load more */
.load-more-wrap {
  text-align: center;
  margin-top: 40px;
}

.btn-load-more {
  padding: 12px 32px;
  background: #ffffff;
  border: 2px solid var(--primary);
  color: var(--primary);
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
}

.btn-load-more:hover {
  background: var(--primary);
  color: #ffffff;
}

/* ==========================================================================
   SERVICES SECTION (DỊCH VỤ GIA CÔNG & SỬA CHỮA)
   ========================================================================== */
.services-section {
  background: #ffffff;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

.service-card {
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: var(--transition);
  position: relative;
}

.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  background: #ffffff;
  box-shadow: 0 20px 30px -10px rgba(0, 0, 0, 0.08);
}

.service-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: #ffedd5;
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin-bottom: 20px;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background: var(--accent);
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

.service-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
}

.service-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   ADVANTAGES / WHY CHOOSE JIE CHU
   ========================================================================== */
.why-section {
  background: linear-gradient(135deg, #090e17 0%, #0f172a 100%);
  color: #ffffff;
}

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

.why-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.why-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.why-item-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(249, 115, 22, 0.15);
  border: 1px solid rgba(249, 115, 22, 0.4);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.why-item-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: #ffffff;
}

.why-item-desc {
  font-size: 0.94rem;
  color: #94a3b8;
  line-height: 1.6;
}

.why-box-quote {
  background: rgba(30, 41, 59, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(12px);
  position: relative;
}

.quote-highlight {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.6;
  color: #f8fafc;
  margin-bottom: 24px;
}

.quote-highlight span {
  color: var(--accent);
}

.author-block {
  display: flex;
  align-items: center;
  gap: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
}

.author-avatar {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #ffffff;
}

.author-name {
  font-weight: 700;
  font-size: 1.05rem;
  color: #ffffff;
}

.author-role {
  font-size: 0.85rem;
  color: #94a3b8;
}

/* ==========================================================================
   CONSULTATION / CONTACT BANNER
   ========================================================================== */
.cta-banner-section {
  padding: 60px 0;
}

.cta-banner-box {
  background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
  border-radius: var(--radius-lg);
  padding: 50px 60px;
  color: #ffffff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 30px;
  box-shadow: 0 20px 35px -5px rgba(234, 88, 12, 0.4);
}

.cta-banner-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
}

.cta-banner-desc {
  font-size: 1.1rem;
  color: #ffedd5;
  max-width: 620px;
}

.cta-banner-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex-shrink: 0;
}

.btn-white {
  background: #ffffff;
  color: #c2410c;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 800;
  font-size: 1.05rem;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.btn-white:hover {
  background: #f8fafc;
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2);
}

.btn-trans {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.4);
  color: #ffffff;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1.05rem;
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.btn-trans:hover {
  background: rgba(0, 0, 0, 0.35);
  border-color: #ffffff;
}

/* ==========================================================================
   MODAL CHI TIẾT SẢN PHẨM
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal-backdrop.show {
  display: flex;
  opacity: 1;
}

.modal-box {
  background: #ffffff;
  border-radius: var(--radius-lg);
  max-width: 860px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
  transform: scale(0.95);
  transition: transform 0.3s ease;
}

.modal-backdrop.show .modal-box {
  transform: scale(1);
}

.btn-close-modal {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 38px;
  height: 38px;
  background: var(--bg-subtle);
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: var(--text-main);
  cursor: pointer;
  transition: var(--transition);
  z-index: 10;
}

.btn-close-modal:hover {
  background: #fee2e2;
  color: #dc2626;
}

.modal-content-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 30px;
  padding: 36px;
}

.modal-img-wrap {
  background: #f8fafc;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 340px;
}

.modal-img-wrap img {
  max-height: 320px;
  object-fit: contain;
}

.modal-details {
  display: flex;
  flex-direction: column;
}

.modal-cat-badge {
  display: inline-block;
  background: #e0f2fe;
  color: #0369a1;
  font-weight: 700;
  font-size: 0.8rem;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 12px;
  align-self: flex-start;
}

.modal-title {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.35;
  margin-bottom: 14px;
}

.modal-desc {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
}

.modal-specs-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 24px;
  font-size: 0.9rem;
}

.modal-specs-table tr {
  border-bottom: 1px solid var(--border-color);
}

.modal-specs-table td {
  padding: 8px 12px;
}

.modal-specs-table td:first-child {
  font-weight: 600;
  color: var(--text-muted);
  width: 40%;
  background: var(--bg-subtle);
}

.modal-specs-table td:last-child {
  font-weight: 500;
  color: var(--text-main);
}

.modal-cta-row {
  display: flex;
  gap: 12px;
  margin-top: auto;
}

/* ==========================================================================
   FLOATING CALL & ZALO WIDGET (CHỐT ĐƠN SIÊU TỐC)
   ========================================================================== */
.floating-contact {
  position: fixed;
  bottom: 25px;
  left: 25px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  z-index: 1500;
}

.floating-btn {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-size: 1.6rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  position: relative;
  text-decoration: none;
  transition: transform 0.3s ease;
}

.floating-btn:hover {
  transform: scale(1.1);
}

.floating-phone {
  background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
  animation: radar-pulse 2s infinite;
}

.floating-zalo {
  background: linear-gradient(135deg, #0068ff 0%, #0052cc 100%);
  animation: radar-pulse 2.2s infinite 0.5s;
}

.floating-label {
  position: absolute;
  left: 68px;
  background: rgba(15, 23, 42, 0.9);
  color: #ffffff;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transform: translateX(-10px);
  transition: var(--transition);
  box-shadow: var(--shadow-md);
}

.floating-btn:hover .floating-label {
  opacity: 1;
  transform: translateX(0);
}

@keyframes radar-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6);
  }
  70% {
    box-shadow: 0 0 0 16px rgba(239, 68, 68, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
  }
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  background: var(--bg-dark);
  color: #94a3b8;
  padding: 70px 0 25px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

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

.footer-col-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 35px;
  height: 2px;
  background: var(--accent);
}

.footer-text {
  font-size: 0.92rem;
  line-height: 1.65;
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  color: #94a3b8;
  font-size: 0.92rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.footer-link:hover {
  color: var(--accent);
  transform: translateX(4px);
}

.footer-contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.92rem;
}

.footer-contact-item i {
  color: var(--accent);
  font-size: 1.1rem;
  margin-top: 3px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 25px;
  text-align: center;
  font-size: 0.85rem;
  color: #64748b;
}

/* ==========================================================================
   RESPONSIVE (MOBILE & TABLET)
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero-desc {
    margin: 0 auto 30px;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-features {
    justify-content: center;
    max-width: 500px;
    margin: 0 auto 30px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .why-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .cta-banner-box {
    flex-direction: column;
    text-align: center;
    padding: 40px 30px;
  }
  .cta-banner-buttons {
    flex-direction: row;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .nav-menu {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
}

@media (max-width: 640px) {
  .hero-title {
    font-size: 2.1rem;
  }
  .section-title {
    font-size: 1.8rem;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .product-grid {
    grid-template-columns: 1fr;
  }
  .modal-content-grid {
    grid-template-columns: 1fr;
    padding: 24px;
    gap: 20px;
  }
  .cta-banner-buttons {
    flex-direction: column;
    width: 100%;
  }
  .btn-white, .btn-trans {
    width: 100%;
    justify-content: center;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .top-bar-left {
    display: none;
  }
  .top-bar-inner {
    justify-content: center;
  }
  .search-bar-wrap {
    display: none;
  }
  .floating-label {
    display: none;
  }
}

/* ==========================================================================
   QR CODE ZALO STYLES
   ========================================================================== */
.floating-zalo-wrapper {
  position: relative;
}

.floating-qr-popup {
  position: absolute;
  left: 72px;
  bottom: 0;
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 12px;
  box-shadow: 0 15px 35px -5px rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  opacity: 0;
  pointer-events: none;
  transform: translateX(-10px) scale(0.95);
  transition: all 0.25s ease;
  z-index: 1600;
  width: 140px;
}

.floating-qr-popup img {
  width: 110px;
  height: 110px;
  object-fit: contain;
}

.floating-qr-popup span {
  font-size: 0.72rem;
  font-weight: 700;
  color: #0068ff;
  text-align: center;
  line-height: 1.2;
}

.floating-zalo-wrapper:hover .floating-qr-popup {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0) scale(1);
}

.qr-box-cta {
  background: #ffffff;
  border-radius: var(--radius-md);
  padding: 12px;
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  color: var(--primary);
  max-width: 270px;
}

.qr-box-cta img {
  width: 76px;
  height: 76px;
  border-radius: 4px;
  flex-shrink: 0;
}

.qr-box-cta-text {
  font-size: 0.8rem;
  line-height: 1.35;
}

.qr-box-cta-text strong {
  color: #0068ff;
  display: block;
  font-size: 0.85rem;
  margin-bottom: 2px;
}

.qr-footer-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
}

.qr-footer-card img {
  width: 70px;
  height: 70px;
  background: #ffffff;
  border-radius: 6px;
  padding: 3px;
  flex-shrink: 0;
}

.qr-footer-card-desc {
  font-size: 0.8rem;
  color: #cbd5e1;
  line-height: 1.35;
}

.qr-footer-card-desc strong {
  color: #38bdf8;
}

@media (max-width: 768px) {
  .floating-qr-popup {
    display: none !important;
  }
}

/* Nút mở chỉ đường Google Maps */
.btn-map-nav {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, rgba(249, 115, 22, 0.18) 0%, rgba(234, 88, 12, 0.08) 100%);
  color: #fb923c !important;
  border: 1px solid rgba(249, 115, 22, 0.45);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  margin-top: 6px;
}

.btn-map-nav:hover {
  background: var(--accent);
  color: #ffffff !important;
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.35);
}