/* ==========================================================================
   CHU GIA SMART SECURITY - MINIMALIST DESIGN SYSTEM
   Phong cách tối giản, sang trọng (Imou & EZVIZ Minimalist)
   Hotline: 0941204125
   ========================================================================== */

/* Font loaded via preconnect in HTML head for non-blocking rendering */

:root {
  --ezviz-blue: #0084FF;
  --ezviz-cyan: #00A0E9;
  --imou-orange: #FF6600;
  --imou-hover: #E55B00;
  
  --dark-bg: #090E17;
  --dark-surface: #111827;
  --dark-border: rgba(255, 255, 255, 0.08);

  --light-bg: #F8FAFC;
  --light-surface: #FFFFFF;
  --border-subtle: #E2E8F0;
  
  --text-main: #0F172A;
  --text-muted: #64748B;
  --text-light: #94A3B8;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.08);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-main);
  background-color: var(--light-bg);
  line-height: 1.5;
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.5px;
}

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

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

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------------- TOPBAR ---------------- */
.topbar {
  background: var(--dark-bg);
  color: #94A3B8;
  font-size: 0.82rem;
  padding: 8px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.topbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

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

.topbar-badge {
  background: rgba(0, 160, 233, 0.15);
  color: #38BDF8;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.72rem;
  font-weight: 600;
}

.topbar-link {
  color: #FFFFFF;
  font-weight: 600;
}

.topbar-link:hover {
  color: var(--imou-orange);
}

/* ---------------- HEADER & NAV ---------------- */
.header {
  position: sticky;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  gap: 16px;
}

/* Logo - Đồng bộ hỗ trợ cả .brand-logo và .logo */
.brand-logo, .logo {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  gap: 10px !important;
  flex-shrink: 0 !important;
  text-decoration: none;
  cursor: pointer;
}

.brand-logo-img {
  height: 44px;
  width: auto;
  max-width: 250px;
  display: block;
  object-fit: contain;
  transition: transform 0.2s ease;
}

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

@media (max-width: 576px) {
  .brand-logo-img {
    height: 36px;
    max-width: 200px;
  }
}

.brand-icon-box, .logo-shield {
  width: 38px;
  height: 38px;
  min-width: 38px;
  background: var(--dark-bg, #070B14);
  border-radius: 9px;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  color: #FFFFFF;
  flex-shrink: 0 !important;
}

.brand-icon-box svg, .logo-shield svg {
  display: block;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--dark-bg, #070B14);
  white-space: nowrap !important;
  display: inline-block;
  line-height: 1;
}

.brand-name span {
  color: var(--imou-orange, #FF6600);
}

/* Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 1;
  list-style: none;
}

.nav-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: #475569;
  padding: 6px 10px;
  border-radius: 6px;
  white-space: nowrap !important;
  transition: all var(--transition, 0.2s ease);
  display: inline-flex;
  align-items: center;
  line-height: 1.2;
}

.nav-link:hover {
  color: var(--imou-orange, #FF6600);
  background: rgba(255, 102, 0, 0.05);
}

.nav-link.active {
  color: var(--imou-orange, #FF6600);
  font-weight: 700;
  background: rgba(255, 102, 0, 0.08);
}

/* Buttons */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0 !important;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--imou-orange);
  color: #FFFFFF;
}

.btn-primary:hover {
  background: var(--imou-hover);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--border-subtle);
  color: var(--text-main);
}

.btn-outline:hover {
  border-color: var(--ezviz-blue);
  color: var(--ezviz-blue);
}

/* Nút Dự Toán Nổi Bật Trên Header */
.btn-dutoan-header {
  position: relative;
  background: linear-gradient(135deg, #0084FF 0%, #0056B3 100%);
  color: #FFFFFF !important;
  font-weight: 700 !important;
  font-size: 0.83rem;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  box-shadow: 0 3px 14px rgba(0, 132, 255, 0.38);
  border: 1px solid rgba(255, 255, 255, 0.35);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
  animation: dutoan-pulse 2.8s infinite;
}

.btn-dutoan-header svg {
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

/* Ánh sáng quét (Shimmer effect) */
.btn-dutoan-header::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -80%;
  width: 50%;
  height: 200%;
  background: linear-gradient(
    60deg,
    transparent 0%,
    rgba(255, 255, 255, 0.45) 50%,
    transparent 100%
  );
  transform: rotate(25deg);
  animation: dutoan-shimmer 3.2s infinite;
  pointer-events: none;
}

@keyframes dutoan-shimmer {
  0%, 65% {
    left: -80%;
  }
  100% {
    left: 150%;
  }
}

@keyframes dutoan-pulse {
  0%, 100% {
    box-shadow: 0 3px 14px rgba(0, 132, 255, 0.38);
    transform: scale(1);
  }
  50% {
    box-shadow: 0 4px 20px rgba(0, 132, 255, 0.65), 0 0 0 3px rgba(0, 132, 255, 0.2);
    transform: scale(1.03);
  }
}

.btn-dutoan-header:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 6px 24px rgba(0, 132, 255, 0.6);
  color: #FFFFFF !important;
  background: linear-gradient(135deg, #0091FF 0%, #0060CC 100%);
}

.btn-dutoan-header:hover svg {
  transform: rotate(-10deg) scale(1.1);
}

.btn-dutoan-header:active {
  transform: translateY(0) scale(0.98);
}

.nav-link-mobile-cta {
  display: none;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.82rem;
}

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: var(--text-main);
}

/* ---------------- HERO (HIGH-TECH DYNAMIC SHOWCASE) ---------------- */
.hero {
  background-color: #070B14;
  background-image: 
    radial-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    radial-gradient(ellipse at 85% 15%, rgba(0, 160, 233, 0.22) 0%, transparent 60%),
    radial-gradient(ellipse at 15% 85%, rgba(255, 102, 0, 0.18) 0%, transparent 55%);
  background-size: 28px 28px, 100% 100%, 100% 100%;
  color: #FFFFFF;
  padding: 55px 0 70px;
  position: relative;
  overflow: hidden;
}

/* Ambient glow orbs */
.hero-ambient-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 1;
}

.hero-ambient-glow.glow-cyan {
  width: 500px;
  height: 500px;
  top: -80px;
  right: -50px;
  background: radial-gradient(circle, rgba(0, 160, 233, 0.25) 0%, rgba(0, 132, 255, 0.08) 50%, transparent 70%);
}

.hero-ambient-glow.glow-orange {
  width: 450px;
  height: 450px;
  bottom: -100px;
  left: -50px;
  background: radial-gradient(circle, rgba(255, 102, 0, 0.2) 0%, rgba(255, 122, 0, 0.05) 50%, transparent 70%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  align-items: center;
  gap: 40px;
  position: relative;
  z-index: 2;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
  max-width: 100%;
}

/* Badge tag with live pulsing beacon */
.hero-badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  background: rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 122, 0, 0.35);
  box-shadow: 0 0 16px rgba(255, 102, 0, 0.12);
  padding: 5px 14px;
  border-radius: var(--radius-full);
  font-size: 0.76rem;
  font-weight: 700;
  color: #E2E8F0;
  letter-spacing: 0.3px;
  width: fit-content;
}

.pulse-beacon {
  width: 8px;
  height: 8px;
  background: #10B981;
  border-radius: 50%;
  box-shadow: 0 0 0 rgba(16, 185, 129, 0.6);
  animation: pulseBeacon 2s infinite;
}

@keyframes pulseBeacon {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
  font-size: 2.85rem;
  font-weight: 800;
  line-height: 1.15;
  color: #FFFFFF;
  letter-spacing: -0.5px;
}

.text-gradient-fire {
  background: linear-gradient(135deg, #FF9900 0%, #FF5500 50%, #FF7A00 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  filter: drop-shadow(0 2px 14px rgba(255, 102, 0, 0.35));
}

.promo-hook-link {
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition);
}

.promo-hook-link:hover {
  filter: brightness(1.25) drop-shadow(0 0 18px rgba(255, 122, 0, 0.7));
  transform: translateY(-2px);
}

.hero-headline-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition);
}

.hero-headline-link:hover {
  filter: brightness(1.2) drop-shadow(0 0 20px rgba(255, 122, 0, 0.8));
  transform: translateX(4px);
}

a.hero-badge-tag {
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition);
}

a.hero-badge-tag:hover {
  border-color: rgba(255, 122, 0, 0.8);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 22px rgba(255, 102, 0, 0.35);
  transform: translateY(-2px);
}

.badge-arrow-hint {
  font-size: 0.85rem;
  color: #FF7A00;
  font-weight: 800;
  transition: transform 0.2s ease;
}

a.hero-badge-tag:hover .badge-arrow-hint {
  transform: translate(2px, -2px);
}

a.floating-hud-badge.hud-top-right {
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--transition);
}

a.floating-hud-badge.hud-top-right:hover {
  transform: scale(1.08) translateY(-4px);
}

.click-pulse-icon {
  display: inline-block;
  font-size: 1.3rem;
  margin-left: 6px;
  vertical-align: middle;
  animation: bounceHint 1.5s infinite;
  color: #FF7A00;
}

.click-pulse-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 102, 0, 0.15);
  border: 1px solid rgba(255, 122, 0, 0.6);
  border-radius: var(--radius-full);
  padding: 4px 10px;
  font-size: 0.72rem;
  font-weight: 800;
  color: #FF9900;
  letter-spacing: 0.5px;
  animation: bounceHint 1.5s infinite;
  box-shadow: 0 0 12px rgba(255, 102, 0, 0.3);
}

@keyframes bounceHint {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(3px, -3px); }
}

@keyframes targetPulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 102, 0, 0.9), 0 0 30px rgba(255, 102, 0, 0.5); transform: scale(1); }
  50% { box-shadow: 0 0 0 14px rgba(255, 102, 0, 0.4), 0 0 50px rgba(255, 102, 0, 0.9); transform: scale(1.04); border-color: #FF7A00; }
  100% { box-shadow: 0 0 0 0 rgba(255, 102, 0, 0), 0 0 20px rgba(255, 102, 0, 0.2); transform: scale(1); }
}

.highlight-target {
  animation: targetPulse 1.1s ease-in-out 3;
  border-color: #FF7A00 !important;
  scroll-margin-top: 100px;
  position: relative;
  z-index: 10;
}

.promo-featured-card {
  border: 2px solid #FF7A00 !important;
  position: relative;
  box-shadow: 0 4px 20px rgba(255, 122, 0, 0.18);
}

.hero-sub {
  font-size: 0.98rem;
  color: #94A3B8;
  max-width: 520px;
  line-height: 1.5;
}

/* Feature tags pill list */
.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 2px 0;
}

.hero-chip {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 5px 12px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: #E2E8F0;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  transition: all var(--transition);
}

.hero-chip:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(0, 160, 233, 0.4);
  transform: translateY(-1px);
}

.chip-icon {
  font-size: 0.9rem;
}

/* Actions */
.hero-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.hero-btn-glow {
  background: linear-gradient(135deg, #FF7A00, #FF4500) !important;
  box-shadow: 0 6px 25px rgba(255, 102, 0, 0.45);
  border: none !important;
  padding: 12px 24px !important;
  font-weight: 700 !important;
  transition: all var(--transition) !important;
}

.hero-btn-glow:hover {
  box-shadow: 0 8px 30px rgba(255, 102, 0, 0.65) !important;
  transform: translateY(-2px);
}

.hero-btn-glass {
  background: rgba(255, 255, 255, 0.06) !important;
  backdrop-filter: blur(12px) !important;
  border: 1px solid rgba(255, 255, 255, 0.2) !important;
  color: #FFFFFF !important;
  padding: 12px 20px !important;
  font-weight: 600 !important;
}

.hero-btn-glass:hover {
  background: rgba(255, 255, 255, 0.12) !important;
  border-color: var(--ezviz-blue) !important;
  color: #38BDF8 !important;
}

/* Stats: 4 Glass Cards with Glowing Top Line */
.hero-stats-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 18px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-stat-card {
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.hero-stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255, 122, 0, 0.6), transparent);
  opacity: 0.4;
  transition: opacity var(--transition);
}

.hero-stat-card:nth-child(2)::before,
.hero-stat-card:nth-child(4)::before {
  background: linear-gradient(90deg, transparent, rgba(0, 160, 233, 0.6), transparent);
}

.hero-stat-card:hover {
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.18);
}

.hero-stat-card:hover::before {
  opacity: 1;
}

.stat-num {
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.2;
}

.stat-num.orange { color: #FF7A00; }
.stat-num.blue { color: #38BDF8; }

.stat-label {
  font-size: 0.72rem;
  color: #94A3B8;
  margin-top: 2px;
}

/* ---------------- HERO SHOWCASE (RIGHT VISUAL WITH SLIDER & HUDS) ---------------- */
.hero-visual {
  position: relative;
}

.hero-showcase-container {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  padding: 8px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(0, 160, 233, 0.15);
}

.hero-slides-wrapper {
  position: relative;
  width: 100%;
  height: 380px;
  border-radius: calc(var(--radius-lg) - 4px);
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s ease, transform 0.6s ease;
  transform: scale(1.02);
}

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

.hero-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.slide-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(7, 11, 20, 0.95) 0%, rgba(7, 11, 20, 0.6) 60%, transparent 100%);
  padding: 24px 16px 12px;
  font-size: 0.8rem;
  color: #E2E8F0;
  display: flex;
  align-items: center;
  gap: 8px;
  z-index: 2;
}

.caption-brand {
  padding: 2px 7px;
  border-radius: 4px;
  background: var(--ezviz-blue);
  color: #FFFFFF;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.caption-brand.imou {
  background: var(--imou-orange);
}

/* Floating HUD Badges */
.floating-hud-badge {
  position: absolute;
  background: rgba(11, 19, 36, 0.88);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-md);
  padding: 8px 14px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  z-index: 3;
  animation: hudFloat 4s ease-in-out infinite alternate;
}

.floating-hud-badge.hud-top-left {
  top: -14px;
  left: -14px;
  border-color: rgba(16, 185, 129, 0.4);
}

.floating-hud-badge.hud-bottom-left {
  bottom: 50px;
  left: -18px;
  border-color: rgba(0, 160, 233, 0.4);
  animation-delay: 1.5s;
}

.floating-hud-badge.hud-top-right {
  top: -12px;
  right: -10px;
  padding: 0;
  border: none;
  background: transparent;
  box-shadow: none;
  animation-delay: 0.8s;
}

.hud-live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 10px #10B981;
  animation: pulseBeacon 1.5s infinite;
}

.hud-title {
  font-size: 0.78rem;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.2;
}

.hud-desc {
  font-size: 0.68rem;
  color: #94A3B8;
}

.hud-icon {
  font-size: 1.1rem;
}

.hud-pill-tag {
  background: linear-gradient(135deg, #EF4444, #F97316);
  color: #FFFFFF;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.45);
  letter-spacing: 0.5px;
}

@keyframes hudFloat {
  0% { transform: translateY(0); }
  100% { transform: translateY(-7px); }
}

/* Slider navigation tabs */
.hero-slider-tabs {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  background: rgba(255, 255, 255, 0.03);
  padding: 4px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.slider-tab-btn {
  flex: 1;
  background: transparent;
  border: none;
  color: #94A3B8;
  font-size: 0.74rem;
  font-weight: 600;
  padding: 7px 10px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all var(--transition);
}

.slider-tab-btn:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.06);
}

.slider-tab-btn.active {
  background: rgba(255, 255, 255, 0.12);
  color: #FFFFFF;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.tab-indicator {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #64748B;
  transition: all var(--transition);
}

.slider-tab-btn.active .tab-indicator {
  background: #38BDF8;
  box-shadow: 0 0 6px #38BDF8;
}

.slider-tab-btn:nth-child(2).active .tab-indicator {
  background: #FF7A00;
  box-shadow: 0 0 6px #FF7A00;
}

/* ---------------- BRANDS STRIP ---------------- */
.brands-strip {
  background: #FFFFFF;
  padding: 20px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.brands-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.brands-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.brands-logos {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.brand-logo-img {
  height: 22px;
  max-width: 90px;
  object-fit: contain;
  opacity: 0.85;
}

.brand-text-partner {
  font-size: 0.9rem;
  font-weight: 800;
  color: #64748B;
  letter-spacing: 0.5px;
}

/* ---------------- SECTIONS COMMON ---------------- */
.section {
  padding: 55px 0;
}

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

.section-white {
  background: #FFFFFF;
}

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

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 30px;
}

.section-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--imou-orange);
  margin-bottom: 8px;
}

.section-dark .section-badge {
  color: #38BDF8;
}

.section-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 6px;
}

.section-dark .section-title {
  color: #FFFFFF;
}

.section-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

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

/* ---------------- PRODUCT CATALOG ---------------- */
.catalog-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 26px;
}

.tab-btn {
  padding: 7px 16px;
  border-radius: var(--radius-full);
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}

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

.tab-btn.active {
  background: var(--dark-bg);
  border-color: var(--dark-bg);
  color: #FFFFFF;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.product-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(0, 132, 255, 0.25);
}

.product-image-box {
  width: 100%;
  height: 200px;
  background: #F8FAFC;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  position: relative;
}

.product-image-box img {
  max-height: 160px;
  max-width: 100%;
  object-fit: contain;
  transition: transform var(--transition);
}

.product-card:hover .product-image-box img {
  transform: scale(1.04);
}

.badge-brand-chip {
  position: absolute;
  top: 10px;
  left: 10px;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-full);
  color: #FFFFFF;
  text-transform: uppercase;
}

.badge-brand-chip.imou { background: var(--imou-orange); }
.badge-brand-chip.ezviz { background: var(--ezviz-blue); }

.badge-hot-tag {
  position: absolute;
  top: 10px;
  right: 10px;
  font-size: 0.62rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, #EF4444, #F97316);
  color: #FFFFFF;
  box-shadow: 0 2px 6px rgba(239, 68, 68, 0.35);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  z-index: 2;
}

.product-body {
  padding: 14px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
  line-height: 1.3;
}

.product-specs-compact {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 12px;
}

.spec-badge {
  font-size: 0.68rem;
  background: #F1F5F9;
  color: #475569;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 500;
}

.product-footer {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.product-price {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--imou-orange);
}

/* ---------------- INTERACTIVE CALCULATOR (COMPACT & VISUAL) ---------------- */
.calculator-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-subtle);
  padding: 24px;
  max-width: 900px;
  margin: 0 auto;
}

/* --- Live Top Preview Box --- */
.calc-live-preview-box {
  background: linear-gradient(135deg, #0b1329 0%, #1e293b 100%);
  border: 1.5px solid rgba(0, 132, 255, 0.35);
  border-radius: 14px;
  padding: 16px 20px;
  margin-bottom: 22px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.14), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: all 0.3s ease;
}

.calc-preview-left {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.calc-preview-img-wrap {
  width: 72px;
  height: 72px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  padding: 4px;
}

.calc-preview-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.35));
  transition: transform 0.25s ease;
}

.calc-preview-details {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.calc-preview-badge {
  font-size: 0.7rem;
  font-weight: 800;
  color: #FF7A00;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.calc-preview-name {
  font-size: 1.05rem;
  font-weight: 800;
  color: #FFFFFF;
  margin: 0 0 5px 0;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.calc-preview-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.preview-chip {
  background: rgba(255, 255, 255, 0.1);
  color: #E2E8F0;
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.calc-preview-right {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.calc-preview-price-group {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  text-align: right;
  gap: 2px;
}

.calc-preview-price-label {
  font-size: 0.72rem;
  color: #94A3B8;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.4px;
}

.calc-preview-total {
  font-size: 1.45rem;
  font-weight: 800;
  color: #FF7A00;
  line-height: 1.15;
  text-shadow: 0 0 16px rgba(255, 122, 0, 0.35);
}

.calc-preview-cta {
  padding: 8px 14px;
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: 8px;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

@media (max-width: 640px) {
  .calc-live-preview-box {
    flex-direction: column;
    align-items: stretch;
    padding: 12px 14px;
    gap: 10px;
  }
  .calc-preview-left {
    gap: 10px;
  }
  .calc-preview-img-wrap {
    width: 60px;
    height: 60px;
  }
  .calc-preview-name {
    font-size: 0.95rem;
  }
  .calc-preview-right {
    width: 100%;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 10px;
    margin-top: 2px;
    gap: 10px;
  }
  .calc-preview-price-group {
    align-items: flex-start;
    text-align: left;
  }
  .calc-preview-total {
    font-size: 1.25rem;
  }
  .calc-preview-cta {
    padding: 8px 12px;
    font-size: 0.74rem;
  }
}

/* --- Step 1: Visual Camera Card Grid --- */
.calc-cam-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 6px;
}

.calc-cam-card {
  position: relative;
  border: 1.5px solid #E2E8F0;
  border-radius: 12px;
  padding: 10px 8px 8px;
  cursor: pointer;
  transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  background: #FFFFFF;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-align: center;
  user-select: none;
  overflow: hidden;
}

.calc-cam-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.calc-cam-card:hover {
  border-color: #0084FF;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 132, 255, 0.12);
}

.calc-cam-card.selected {
  border-color: #0084FF;
  background: #F0F7FF;
  box-shadow: 0 0 0 2px rgba(0, 132, 255, 0.22), 0 6px 16px rgba(0, 132, 255, 0.1);
}

.calc-cam-tag {
  position: absolute;
  top: 6px;
  left: 6px;
  max-width: calc(100% - 28px);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-size: 0.62rem;
  font-weight: 800;
  padding: 2px 6px;
  border-radius: 6px;
  background: #F1F5F9;
  color: #475569;
  z-index: 2;
  letter-spacing: 0.3px;
}

.calc-cam-tag.hot {
  background: #FEF2F2;
  color: #DC2626;
  border: 1px solid #FECACA;
}

.calc-cam-tag.quality {
  background: #EFF6FF;
  color: #0284C7;
  border: 1px solid #BAE6FD;
}

.calc-cam-tag.outdoor {
  background: #F0FDF4;
  color: #16A34A;
  border: 1px solid #BBF7D0;
}

.calc-cam-tag.premium {
  background: #FAF5FF;
  color: #9333EA;
  border: 1px solid #E9D5FF;
}

.calc-cam-tag.solar {
  background: #FFFBEB;
  color: #D97706;
  border: 1px solid #FDE68A;
}

.calc-cam-qty-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  min-width: 22px;
  height: 22px;
  padding: 0 4px;
  border-radius: 11px;
  background: #0084FF;
  color: #FFFFFF;
  font-size: 0.72rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 6px rgba(0, 132, 255, 0.35);
  z-index: 2;
  border: 1.5px solid #FFFFFF;
}

.calc-cam-img-wrap {
  width: 100%;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 14px 0 6px 0;
}

.calc-cam-img-wrap img {
  max-height: 70px;
  max-width: 100%;
  object-fit: contain;
  transition: transform 0.25s ease;
}

.calc-cam-card:hover .calc-cam-img-wrap img {
  transform: scale(1.08);
}

.calc-cam-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.calc-cam-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: #0F172A;
  line-height: 1.25;
}

.calc-cam-desc {
  font-size: 0.67rem;
  color: #64748B;
  margin-bottom: 2px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.calc-cam-price {
  font-size: 0.95rem;
  font-weight: 800;
  color: #FF6600;
}

/* Actions per camera card: Add button vs Stepper */
.calc-cam-actions {
  margin-top: 8px;
}

.cam-add-btn {
  width: 100%;
  padding: 5px 8px;
  border-radius: 8px;
  border: 1.5px dashed #CBD5E1;
  background: #F8FAFC;
  color: #0084FF;
  font-weight: 700;
  font-size: 0.74rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.cam-add-btn:hover {
  border-color: #0084FF;
  background: #EFF6FF;
  border-style: solid;
}

.cam-stepper {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #F0F7FF;
  border: 1.5px solid #0084FF;
  border-radius: 8px;
  padding: 2px 4px;
  box-sizing: border-box;
}

.cam-stepper-btn {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: none;
  background: #0084FF;
  color: #FFFFFF;
  font-size: 0.95rem;
  font-weight: 800;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.1s, background 0.2s;
  font-family: inherit;
}

.cam-stepper-btn:hover {
  background: #006ED4;
}

.cam-stepper-btn:active {
  transform: scale(0.92);
}

.cam-stepper-btn.minus {
  background: #E2E8F0;
  color: #334155;
}

.cam-stepper-btn.minus:hover {
  background: #CBD5E1;
  color: #0F172A;
}

.cam-stepper-val {
  font-size: 0.85rem;
  font-weight: 800;
  color: #0F172A;
}

@media (max-width: 600px) {
  .calc-cam-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }
  .calc-cam-tag {
    font-size: 0.58rem;
    padding: 1.5px 4.5px;
  }
  .calc-cam-qty-badge {
    min-width: 20px;
    height: 20px;
    font-size: 0.68rem;
  }
  .calc-cam-img-wrap {
    height: 66px;
    margin: 12px 0 4px 0;
  }
  .calc-cam-img-wrap img {
    max-height: 60px;
  }
  .calc-cam-title {
    font-size: 0.76rem;
  }
  .cam-add-btn {
    font-size: 0.70rem;
    padding: 4px 6px;
  }
  .cam-stepper-btn {
    width: 20px;
    height: 20px;
    font-size: 0.85rem;
  }
}

/* --- Step 2: Combo Presets & Total Cam Pill --- */
.calc-step-hint {
  font-size: 0.72rem;
  color: #0084FF;
  font-weight: 700;
  background: #EFF6FF;
  padding: 3px 8px;
  border-radius: 20px;
  border: 1px solid #BAE6FD;
}

.calc-total-cam-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: #EFF6FF;
  border: 1.5px solid #0084FF;
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 0.76rem;
  color: #0F172A;
  font-weight: 600;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22C55E;
  display: inline-block;
  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
  animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 6px rgba(34, 197, 94, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
  }
}

.combo-presets-wrapper {
  margin-top: 4px;
}

.combo-presets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.combo-preset-btn {
  position: relative;
  background: #FFFFFF;
  border: 1.5px solid #E2E8F0;
  border-radius: 12px;
  padding: 10px 10px 8px;
  text-align: left;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  font-family: inherit;
  user-select: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.combo-preset-btn:hover {
  border-color: #0084FF;
  background: #F8FAFC;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 132, 255, 0.08);
}

.combo-preset-btn.active {
  border-color: #0084FF;
  background: #F0F7FF;
  box-shadow: 0 0 0 2px rgba(0, 132, 255, 0.22), 0 4px 12px rgba(0, 132, 255, 0.1);
}

.preset-badge-tag {
  position: absolute;
  top: -7px;
  right: 8px;
  font-size: 0.58rem;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: 10px;
  background: #F1F5F9;
  color: #475569;
  border: 1px solid #E2E8F0;
  letter-spacing: 0.2px;
}

.preset-badge-tag.hot {
  background: #FEF2F2;
  color: #DC2626;
  border-color: #FECACA;
}

.preset-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 2px;
}

.preset-icon {
  font-size: 1rem;
  line-height: 1;
}

.preset-name {
  font-size: 0.78rem;
  font-weight: 800;
  color: #0F172A;
  line-height: 1.25;
}

.combo-preset-btn.active .preset-name {
  color: #0084FF;
}

.preset-desc {
  font-size: 0.67rem;
  color: #64748B;
  line-height: 1.25;
}

.combo-preset-btn.reset-btn {
  border-style: dashed;
}

.combo-preset-btn.reset-btn:hover {
  border-color: #94A3B8;
  background: #F8FAFC;
}

@media (max-width: 600px) {
  .combo-presets-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }
  .combo-preset-btn {
    padding: 8px 8px 6px;
  }
  .preset-name {
    font-size: 0.72rem;
  }
  .preset-desc {
    font-size: 0.63rem;
  }
}

/* --- Summary Box Camera Breakdown Items --- */
.summary-cam-section {
  margin-bottom: 6px;
}

.summary-sec-title {
  font-size: 0.74rem;
  color: #94A3B8;
  font-weight: 600;
  margin-bottom: 5px;
}

.summary-cam-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 6px;
}

.summary-cam-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.76rem;
  padding: 5px 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  border-left: 3px solid #38BDF8;
}

.summary-cam-item span {
  color: #E2E8F0;
  font-weight: 500;
}

.summary-cam-item strong {
  color: #38BDF8;
  font-weight: 700;
}

.summary-subtotal-line {
  font-weight: 700;
  color: #38BDF8 !important;
  margin-top: 4px;
}

.summary-subtotal-line span:last-child {
  color: #38BDF8 !important;
}

/* --- Step 3: Compact Grids (MicroSD & NVR) --- */
.storage-grid-2x2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.nvr-grid-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

@media (max-width: 600px) {
  .nvr-grid-cards {
    grid-template-columns: 1fr;
  }
}

/* --- Floating Mobile Sticky Bar --- */
.calc-mobile-sticky-bar {
  display: none;
}

@media (max-width: 768px) {
  .calc-mobile-sticky-bar {
    display: block;
    position: fixed;
    left: 0;
    right: 0;
    bottom: 62px;
    bottom: calc(62px + env(safe-area-inset-bottom));
    z-index: 980;
    padding: 0 10px;
    pointer-events: none;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
    transform: translateY(120%);
    opacity: 0;
  }

  .calc-mobile-sticky-bar.visible {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .cmsb-content {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1.5px solid rgba(0, 132, 255, 0.35);
    border-radius: 12px;
    padding: 8px 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  }

  .cmsb-cam-info {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
  }

  .cmsb-img {
    width: 38px;
    height: 38px;
    object-fit: contain;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 2px;
    flex-shrink: 0;
    border: 1px solid rgba(255, 255, 255, 0.15);
  }

  .cmsb-text {
    display: flex;
    flex-direction: column;
    min-width: 0;
  }

  .cmsb-name {
    font-size: 0.72rem;
    font-weight: 700;
    color: #FFFFFF;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 140px;
  }

  .cmsb-price {
    font-size: 0.96rem;
    font-weight: 800;
    color: #FF7A00;
    line-height: 1.15;
  }

  .cmsb-btn {
    flex-shrink: 0;
    padding: 8px 12px;
    font-size: 0.74rem;
    font-weight: 700;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    box-shadow: 0 3px 10px rgba(255, 102, 0, 0.35);
  }
}

.calculator-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
}

.calc-step {
  margin-bottom: 18px;
}

.calc-step-title {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.step-num {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--ezviz-blue);
  color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
}

.calc-options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.calc-option {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 9px 10px;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
}

.calc-option:hover {
  border-color: var(--ezviz-blue);
}

.calc-option.selected {
  border-color: var(--ezviz-blue);
  background: rgba(0, 132, 255, 0.04);
}

/* Storage Mode Toggle (Thẻ nhớ vs Đầu ghi + Ổ cứng) */
.storage-mode-toggle {
  display: inline-flex;
  background: #F1F5F9;
  border: 1.5px solid #CBD5E1;
  border-radius: var(--radius-full);
  padding: 4px;
  gap: 6px;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.04);
}

.storage-tab-btn {
  background: #FFFFFF;
  border: 1.5px solid #CBD5E1;
  border-radius: var(--radius-full);
  padding: 6px 14px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #475569;
  cursor: pointer;
  transition: all 0.22s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: inherit;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
  position: relative;
  user-select: none;
}

/* Radio circle indicator inside each button to clearly show it's a choice option */
.storage-tab-btn::before {
  content: '';
  display: inline-block;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 1.5px solid #94A3B8;
  background: #FFFFFF;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

/* Hover effects for unselected buttons */
.storage-tab-btn[data-mode="card"]:hover:not(.active) {
  border-color: #0084FF;
  color: #0084FF;
  background: #F0F9FF;
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(0, 132, 255, 0.15);
}

.storage-tab-btn[data-mode="card"]:hover:not(.active)::before {
  border-color: #0084FF;
}

.storage-tab-btn[data-mode="nvr"]:hover:not(.active) {
  border-color: #FF6600;
  color: #EA580C;
  background: #FFF7ED;
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(255, 102, 0, 0.18);
}

.storage-tab-btn[data-mode="nvr"]:hover:not(.active)::before {
  border-color: #FF6600;
}

.storage-tab-btn:active {
  transform: scale(0.97);
}

/* Active State: Card (MicroSD) */
.storage-tab-btn.active[data-mode="card"] {
  background: #EFF6FF;
  border-color: var(--ezviz-blue);
  color: var(--ezviz-blue);
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(0, 132, 255, 0.22), 0 0 0 1px rgba(0, 132, 255, 0.2);
}

.storage-tab-btn.active[data-mode="card"]::before {
  border-color: var(--ezviz-blue);
  background: var(--ezviz-blue);
  box-shadow: inset 0 0 0 2.5px #FFFFFF;
}

/* Active State: NVR (Đầu ghi & Ổ cứng) */
.storage-tab-btn.active[data-mode="nvr"] {
  background: #FFF7ED;
  border-color: #FF6600;
  color: #EA580C;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(255, 102, 0, 0.22), 0 0 0 1px rgba(255, 102, 0, 0.2);
}

.storage-tab-btn.active[data-mode="nvr"]::before {
  border-color: #FF6600;
  background: #FF6600;
  box-shadow: inset 0 0 0 2.5px #FFFFFF;
}

.storage-group-panel {
  transition: all 0.3s ease;
}

.nvr-grid-3,
.hdd-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.hdd-live-days {
  font-size: 0.72rem;
  color: #0284C7;
  font-weight: 700;
  margin-top: 2px;
}

/* CCTV 24/7 Advisory Box */
.cctv-advisory-box {
  background: linear-gradient(135deg, rgba(0, 132, 255, 0.06), rgba(255, 102, 0, 0.06));
  border: 1px solid rgba(0, 132, 255, 0.25);
  border-radius: 10px;
  padding: 12px 14px;
  margin-top: 12px;
  transition: all 0.3s ease;
}

@media (max-width: 600px) {
  .nvr-grid-3,
  .hdd-grid-3 {
    grid-template-columns: 1fr;
  }
  .storage-mode-toggle {
    width: 100%;
    margin-top: 6px;
  }
  .storage-tab-btn {
    flex: 1;
    justify-content: center;
    padding: 6px 8px;
    font-size: 0.72rem;
  }
}

.qty-stepper {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #F1F5F9;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  width: fit-content;
}

.qty-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  cursor: pointer;
}

.qty-val {
  font-size: 1.05rem;
  font-weight: 700;
  min-width: 20px;
  text-align: center;
}

/* Calculator Summary */
.calc-summary-box {
  background: var(--dark-bg);
  border-radius: var(--radius-md);
  padding: 22px;
  color: #FFFFFF;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: sticky;
  top: 90px;
  align-self: start;
}

.calc-summary-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.summary-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.82rem;
  color: #CBD5E1;
  margin-bottom: 18px;
}

.summary-line {
  display: flex;
  justify-content: space-between;
}

.summary-line span:last-child {
  font-weight: 600;
  color: #FFFFFF;
}

.summary-total {
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 14px;
  text-align: center;
}

.total-number {
  font-size: 1.6rem;
  font-weight: 800;
  color: #FF7A00;
}

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

.solution-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  padding: 22px 18px;
  transition: all var(--transition);
}

.solution-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--ezviz-blue);
}

.solution-icon {
  font-size: 1.5rem;
  margin-bottom: 10px;
}

.solution-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.solution-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 12px;
  line-height: 1.4;
}

/* ---------------- WHY CHOOSE (5 PILLARS WITH >10 YEARS CCTV) ---------------- */
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.benefit-card {
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-md);
  padding: 20px 14px;
  transition: transform var(--transition), border-color var(--transition);
}

.benefit-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 102, 0, 0.4);
}

.benefit-icon {
  width: 38px;
  height: 38px;
  border-radius: 9px;
  background: rgba(0, 160, 233, 0.15);
  color: #38BDF8;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  font-size: 1.15rem;
}

.benefit-card:nth-child(1) .benefit-icon,
.benefit-card:nth-child(3) .benefit-icon,
.benefit-card:nth-child(5) .benefit-icon {
  background: rgba(255, 102, 0, 0.15);
  color: #FF7A00;
}

.benefit-card:nth-child(2) .benefit-icon,
.benefit-card:nth-child(4) .benefit-icon {
  background: rgba(0, 160, 233, 0.15);
  color: #38BDF8;
}

.benefit-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 4px;
}

.benefit-desc {
  font-size: 0.78rem;
  color: #94A3B8;
  line-height: 1.4;
}

/* ---------------- PROJECTS GALLERY ---------------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.project-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
}

.project-img-box {
  height: 180px;
  position: relative;
}

.project-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.project-loc {
  position: absolute;
  bottom: 8px;
  left: 8px;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  color: #FFFFFF;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: var(--radius-full);
}

.project-content {
  padding: 14px;
}

.project-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.project-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ---------------- COMPACT CONTACT & INFO ---------------- */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.contact-info-panel {
  background: var(--dark-bg);
  color: #FFFFFF;
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.company-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.company-sub {
  font-size: 0.85rem;
  color: #94A3B8;
  margin-bottom: 20px;
}

.contact-info-lines {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.info-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
}

.info-line svg {
  color: var(--imou-orange);
  flex-shrink: 0;
}

.contact-form-panel {
  padding: 30px;
}

.contact-form-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.form-group {
  margin-bottom: 12px;
}

.form-control {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  background: #F8FAFC;
  font-family: inherit;
}

.form-control:focus {
  outline: none;
  border-color: var(--ezviz-blue);
  background: #FFFFFF;
}

/* ---------------- FOOTER ---------------- */
.footer {
  background: #05070B;
  color: #94A3B8;
  padding: 35px 0 20px;
  font-size: 0.8rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------------- FLOATING WIDGETS (COMPACT) ---------------- */
.floating-widgets {
  position: fixed;
  bottom: 20px;
  right: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 999;
}

.float-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
  color: #FFFFFF;
  transition: transform var(--transition);
}

.float-btn:hover {
  transform: scale(1.06);
}

.float-phone {
  background: var(--imou-orange);
}

.float-zalo {
  background: #0068FF;
  font-weight: 700;
  font-size: 0.75rem;
}

.float-top {
  background: var(--dark-bg);
  border: 1px solid rgba(255, 255, 255, 0.2);
  opacity: 0;
  visibility: hidden;
  cursor: pointer;
}

.float-top.visible {
  opacity: 1;
  visibility: visible;
}

/* ---------------- MODAL & TOAST ---------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  padding: 20px;
}

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

.modal-content {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  max-width: 550px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  padding: 24px;
}

.modal-close-btn {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #F1F5F9;
  border: 1px solid #E2E8F0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #64748B;
  transition: all var(--transition);
}

.modal-close-btn:hover {
  background: #E2E8F0;
  color: #0F172A;
  transform: rotate(90deg);
}

/* Product Quick Share on Grid Cards */
.product-quick-share-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(4px);
  border: 1px solid #E2E8F0;
  color: #64748B;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 3;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.product-quick-share-btn:hover {
  background: #FFFFFF;
  color: var(--ezviz-blue);
  border-color: var(--ezviz-blue);
  transform: scale(1.1);
  box-shadow: 0 4px 12px rgba(0, 132, 255, 0.2);
}

/* Modal Social Share Bar */
.modal-share-wrapper {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed #E2E8F0;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.modal-share-header {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.76rem;
  font-weight: 700;
  color: #64748B;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.modal-share-btns {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
}

.btn-share-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 13px;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: 1.5px solid #CBD5E1;
  background: #FFFFFF;
  color: #475569;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  user-select: none;
  font-family: inherit;
}

.btn-share-item:hover {
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.08);
}

.btn-share-item:active {
  transform: scale(0.97);
}

/* Copy button */
.share-btn-copy:hover {
  border-color: #0084FF;
  color: #0084FF;
  background: #EFF6FF;
}

.share-btn-copy.copied {
  border-color: #10B981 !important;
  color: #059669 !important;
  background: #ECFDF5 !important;
  box-shadow: 0 0 0 2px rgba(16, 185, 129, 0.2) !important;
}

/* Facebook button */
.share-btn-fb:hover {
  border-color: #1877F2;
  color: #1877F2;
  background: #F0F5FF;
}

/* Zalo button */
.share-btn-zalo:hover {
  border-color: #0068FF;
  color: #0068FF;
  background: #F0F6FF;
}

.zalo-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #0068FF;
  color: #FFFFFF;
  font-size: 0.58rem;
  font-weight: 800;
  padding: 1px 4px;
  border-radius: 4px;
  line-height: 1;
}

/* Native Share button */
.share-btn-native:hover {
  border-color: #64748B;
  color: #0F172A;
  background: #F1F5F9;
}

/* QR Button in Modal Share Bar */
.share-btn-qr {
  background: linear-gradient(135deg, #0084FF, #00A0E9);
  color: #FFFFFF !important;
  border-color: transparent;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(0, 132, 255, 0.25);
}

.share-btn-qr:hover {
  background: linear-gradient(135deg, #0070DB, #0084FF);
  color: #FFFFFF !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 132, 255, 0.35);
}

/* ---------------- QR SHARE MODAL ---------------- */
.qr-modal-content {
  max-width: 440px;
  width: 95%;
  padding: 18px;
  border-radius: 20px;
  background: #FFFFFF;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.qr-share-card {
  background: #FFFFFF;
  border: 1.5px solid #E2E8F0;
  border-radius: 16px;
  padding: 14px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04);
}

.qr-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 8px;
  margin-bottom: 10px;
  border-bottom: 1px solid #F1F5F9;
}

.qr-shop-brand {
  font-size: 0.76rem;
  font-weight: 800;
  color: #0F172A;
  display: flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.3px;
}

.qr-shop-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #0084FF;
  box-shadow: 0 0 0 2px rgba(0, 132, 255, 0.25);
}

.qr-card-tag {
  font-size: 0.65rem;
  font-weight: 700;
  color: #059669;
  background: #ECFDF5;
  padding: 2px 8px;
  border-radius: 20px;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Khung ảnh sản phẩm to chính giữa, có mã QR nhỏ ở góc dưới phải */
.qr-product-hero-wrap {
  position: relative;
  width: 100%;
  height: 230px;
  background: #F8FAFC;
  border-radius: 14px;
  border: 1px solid #E2E8F0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  overflow: hidden;
  margin-bottom: 12px;
}

.qr-hero-img {
  max-height: 190px;
  max-width: 80%;
  object-fit: contain;
  transition: transform 0.2s ease;
}

/* Mã QR nhỏ ở góc ảnh sản phẩm đủ để điện thoại quét được (~82px) */
.qr-corner-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: #FFFFFF;
  border: 1.5px solid #CBD5E1;
  border-radius: 10px;
  padding: 4px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.14);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  z-index: 3;
}

.qr-code-box-mini {
  width: 82px;
  height: 82px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #FFFFFF;
}

.qr-code-box-mini img,
.qr-code-box-mini canvas {
  width: 82px !important;
  height: 82px !important;
  display: block;
}

.qr-corner-label {
  font-size: 0.6rem;
  font-weight: 800;
  color: #0F172A;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  line-height: 1;
  margin-top: 1px;
}

/* Thông tin sản phẩm bên dưới */
.qr-card-info-bottom {
  text-align: left;
}

.qr-card-title {
  font-size: 0.98rem;
  font-weight: 800;
  color: #0F172A;
  line-height: 1.35;
  margin-bottom: 4px;
}

.qr-card-price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.qr-card-price {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.qr-price-val {
  font-size: 1.15rem;
  font-weight: 800;
  color: #FF6600;
}

.qr-price-old {
  font-size: 0.76rem;
  color: #94A3B8;
  text-decoration: line-through;
}

.qr-hotline-badge {
  font-size: 0.7rem;
  font-weight: 700;
  color: #0284C7;
  background: #E0F2FE;
  padding: 2px 7px;
  border-radius: 6px;
}

.qr-card-desc {
  font-size: 0.75rem;
  color: #64748B;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
  margin-bottom: 2px;
}

.qr-modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 14px;
  width: 100%;
}

.btn-qr-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: inherit;
}

.toast-msg {
  position: fixed;
  top: 16px;
  right: 16px;
  background: #10B981;
  color: #FFFFFF;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 3000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-15px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  max-width: calc(100vw - 32px);
  box-sizing: border-box;
  pointer-events: none;
}

.toast-msg.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  pointer-events: auto;
}

/* ---------------- RESPONSIVE (ZERO OVERLAPS) ---------------- */
.hide-mobile {
  display: inline-flex !important;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .calculator-grid {
    grid-template-columns: 1fr;
  }

  .solutions-grid, .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-wrapper {
    grid-template-columns: 1fr;
  }
}

/* Intermediate desktop screen: Compact menu */
@media (min-width: 993px) and (max-width: 1240px) {
  .header-container {
    padding: 0 16px;
    gap: 10px;
  }
  .nav-menu {
    gap: 8px;
  }
  .nav-link {
    font-size: 0.82rem;
    padding: 6px 7px;
  }
  .brand-name {
    font-size: 1.05rem;
  }
  .header-actions {
    gap: 6px;
  }
  .header-actions .btn-sm {
    padding: 6px 10px;
    font-size: 0.78rem;
  }
}

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

  .hide-mobile {
    display: none !important;
  }

  .header-container {
    height: 60px;
    padding: 0 16px;
  }

  .brand-icon-box, .logo-shield {
    width: 34px;
    height: 34px;
    min-width: 34px;
  }

  .brand-icon-box svg, .logo-shield svg {
    width: 18px;
    height: 18px;
  }

  .brand-name {
    font-size: 1.05rem;
  }

  .btn-dutoan-header {
    display: inline-flex !important;
    padding: 5px 10px;
    font-size: 0.76rem;
    gap: 4px;
    border-radius: var(--radius-full);
  }

  .btn-dutoan-header svg {
    width: 13px;
    height: 13px;
  }

  .nav-link-mobile-cta {
    display: flex !important;
    align-items: center;
    background: linear-gradient(135deg, rgba(0, 132, 255, 0.08), rgba(0, 86, 179, 0.12));
    color: var(--ezviz-blue) !important;
    font-weight: 700;
    border: 1px solid rgba(0, 132, 255, 0.3);
    border-radius: 8px;
    padding: 11px 14px;
    margin-top: 4px;
    box-shadow: 0 2px 8px rgba(0, 132, 255, 0.08);
  }

  .header-actions {
    gap: 6px;
  }

  .header-actions .btn-sm {
    padding: 6px 11px;
    font-size: 0.78rem;
  }

  .mobile-toggle {
    display: flex !important;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    background: #F1F5F9;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    color: var(--text-main);
  }

  .nav-menu {
    position: fixed;
    top: 60px;
    left: 0;
    width: 100%;
    background: #FFFFFF;
    flex-direction: column;
    align-items: stretch;
    padding: 18px 20px;
    gap: 8px;
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: 0 14px 35px rgba(0, 0, 0, 0.12);
    transform: translateY(-150%);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 999;
  }

  .nav-menu.open,
  .nav-menu.active {
    transform: translateY(0);
  }

  .nav-link {
    padding: 10px 14px;
    font-size: 0.92rem;
    width: 100%;
    border-radius: 8px;
  }

  .nav-link:hover, .nav-link.active {
    background: #FFF7ED;
  }

  .hero {
    padding: 35px 0 45px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-sub {
    font-size: 0.9rem;
  }

  .hero-stats-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .hero-slides-wrapper {
    height: 250px;
  }

  .floating-hud-badge.hud-bottom-left {
    bottom: 50px;
    left: 4px;
    padding: 6px 10px;
  }

  .floating-hud-badge.hud-top-left {
    top: -10px;
    left: 4px;
    padding: 6px 10px;
  }

  .solutions-grid, .benefits-grid, .projects-grid {
    grid-template-columns: 1fr;
  }

  .calc-options-grid {
    grid-template-columns: 1fr;
  }

  .contact-info-panel, .contact-form-panel {
    padding: 20px;
  }
}

@media (max-width: 576px) {
  .btn-dutoan-header {
    display: none !important;
  }

  .brand-logo-img {
    height: 32px !important;
    max-width: 160px !important;
  }

  .hero {
    padding: 24px 0 35px;
    overflow: hidden;
  }

  .hero-grid {
    gap: 22px;
  }

  .hero-title {
    font-size: 1.7rem;
    line-height: 1.25;
    word-break: break-word;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 10px;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
    text-align: center;
    padding: 12px 18px !important;
  }

  .click-pulse-pill {
    display: inline-flex;
    margin-top: 4px;
  }

  .modal-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .modal-cta-group .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .header-container {
    padding: 0 12px;
    gap: 8px;
  }

  .brand-icon-box,
  .logo-shield {
    width: 30px;
    height: 30px;
    min-width: 30px;
    border-radius: 7px;
  }

  .brand-icon-box svg,
  .logo-shield svg {
    width: 16px;
    height: 16px;
  }

  .brand-name {
    font-size: 0.92rem;
  }

  .brand-name span {
    display: none;
  }

  .header-actions {
    gap: 8px;
  }

  .header-actions .btn-primary.btn-sm {
    padding: 6px 12px;
    font-size: 0.78rem;
    gap: 4px;
    border-radius: var(--radius-full);
  }

  .header-actions .btn-primary.btn-sm svg {
    width: 13px;
    height: 13px;
  }

  .mobile-toggle {
    width: 36px;
    height: 36px;
    min-width: 36px;
  }
}

@media (max-width: 360px) {
  .header-actions .btn-primary.btn-sm span {
    display: none;
  }
  .header-actions .btn-primary.btn-sm {
    width: 34px;
    height: 34px;
    padding: 0;
    justify-content: center;
    border-radius: 50%;
  }
}

/* ==========================================================================
   MOBILE BOTTOM NAVIGATION (MODERN APP DOCK)
   Áp dụng đồng bộ cho Trang chủ, Sản phẩm, Giải pháp, Liên hệ
   ========================================================================== */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: calc(60px + env(safe-area-inset-bottom, 0px));
  background: rgba(9, 14, 25, 0.95);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 -6px 25px rgba(0, 0, 0, 0.5);
  z-index: 990;
  align-items: center;
  justify-content: space-around;
  padding: 0 4px;
  padding-bottom: env(safe-area-inset-bottom, 0px);
  box-sizing: border-box;
}

.mbn-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: #94A3B8;
  text-decoration: none;
  font-size: 0.72rem;
  font-weight: 600;
  font-family: inherit;
  flex: 1;
  height: 100%;
  position: relative;
  background: transparent !important;
  background-color: transparent !important;
  border: none !important;
  outline: none !important;
  box-shadow: none !important;
  -webkit-appearance: none;
  appearance: none;
  padding: 0 !important;
  margin: 0 !important;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  -webkit-tap-highlight-color: transparent;
}

.mbn-icon-wrap {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 26px;
  border-radius: 13px;
  transition: all 0.2s ease;
}

.mbn-item svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  transition: all 0.2s ease;
}

.mbn-item span {
  font-size: 0.68rem;
  font-weight: 600;
  line-height: 1.1;
  transition: color 0.2s ease;
}

/* Touch feedback */
.mbn-item:active .mbn-icon-wrap {
  transform: scale(0.9);
}

/* Active Tab Highlight */
.mbn-item.active {
  color: #0084FF !important;
}

.mbn-item.active .mbn-icon-wrap {
  background: rgba(0, 132, 255, 0.16);
}

.mbn-item.active svg {
  stroke: #0084FF;
  filter: drop-shadow(0 0 6px rgba(0, 132, 255, 0.6));
}

.mbn-item.active span {
  color: #38BDF8;
  font-weight: 700;
}

/* Special Highlight Item (e.g. Báo Giá / Dự Toán) */
.mbn-item.mbn-highlight {
  color: #FF7A00;
}

.mbn-item.mbn-highlight .mbn-icon-wrap {
  background: rgba(255, 122, 0, 0.12);
}

.mbn-item.mbn-highlight svg {
  stroke: #FF7A00;
}

.mbn-item.mbn-highlight span {
  color: #FF9900;
  font-weight: 700;
}

.mbn-item.mbn-highlight.active .mbn-icon-wrap {
  background: linear-gradient(135deg, #FF7A00, #FF5500);
}

.mbn-item.mbn-highlight.active svg {
  stroke: #FFFFFF;
}

/* Badge (e.g. Giỏ hàng) */
.mbn-badge {
  position: absolute;
  top: -4px;
  right: -5px;
  background: #EF4444;
  color: #FFFFFF;
  font-size: 0.62rem;
  font-weight: 800;
  min-width: 17px;
  height: 17px;
  line-height: 17px;
  border-radius: 99px;
  text-align: center;
  padding: 0 4px;
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.8);
  box-sizing: border-box;
  border: 1.5px solid #090e19;
}

@media (max-width: 768px) {
  body {
    padding-bottom: calc(68px + env(safe-area-inset-bottom, 0px)) !important;
  }

  .mobile-bottom-nav {
    display: flex !important;
  }

  .floating-widgets,
  .cart-float-btn {
    bottom: 74px !important;
    right: 14px !important;
    transition: bottom 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  }

  body.has-calc-sticky-visible .floating-widgets,
  body.has-calc-sticky-visible .cart-float-btn {
    bottom: 125px !important;
    bottom: calc(125px + env(safe-area-inset-bottom)) !important;
  }

  body.has-calc-sticky-visible #floatTop {
    display: none !important;
  }
}