/* ============================================
   GOOGLE FONTS - Be Vietnam Pro + Inter
   Hỗ trợ đầy đủ ký tự Tiếng Việt Unicode
   ============================================ */
@import url("https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,400&family=Inter:wght@300;400;500;600;700;800;900&display=swap");

/* ============================================
   DESIGN TOKENS (CSS CUSTOM PROPERTIES)
   ============================================ */
:root {
  /* Brand Colors */
  /* --primary: #0F172A;
    --primary-light: #1E293B;
    --secondary: #2563EB;
    --secondary-hover: #1D4ED8;
    --secondary-light: #DBEAFE;
    --accent: #22C55E;
    --accent-light: #DCFCE7;
    */
  --danger: #ef4444;
  --warning: #f59e0b;
  --primary: #0f172a;
  --primary-light: #283593;

  --secondary: #2d4ed8;
  /* Màu xanh logo */
  --secondary-hover: #1e40af;
  --secondary-light: #dbeafe;

  --accent: #22c55e;
  /* Neutral Palette */
  --bg-page: #f8fafc;
  --bg-section-alt: #eff6ff;
  --bg-white: #ffffff;
  --text-dark: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --border-focus: #93c5fd;

  /* Typography */
  --font-heading: "Be Vietnam Pro", sans-serif;
  --font-body: "Inter", sans-serif;

  /* Spacing (8px grid) */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 40px;
  --space-xl: 60px;
  --space-2xl: 90px;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-xs:
    0 1px 3px rgba(15, 23, 42, 0.05), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm:
    0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
  --shadow-md:
    0 10px 15px -3px rgba(15, 23, 42, 0.08),
    0 4px 6px -4px rgba(15, 23, 42, 0.05);
  --shadow-lg:
    0 20px 25px -5px rgba(15, 23, 42, 0.1),
    0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --shadow-xl: 0 25px 50px -12px rgba(15, 23, 42, 0.18);
  --shadow-glow: 0 0 0 4px rgba(37, 99, 235, 0.15);

  /* Transitions */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --duration-fast: 150ms;
  --duration-base: 250ms;
  --duration-slow: 400ms;
}

/* ============================================
   BASE RESET & GLOBAL STYLES
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: clip;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--text-body);
  background-color: var(--bg-page);
  overflow-x: clip;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Heading System */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-dark);
  letter-spacing: -0.02em;
  margin-bottom: 0;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
}

h3 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}

h4 {
  font-size: 1.125rem;
}

p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-body);
  margin-bottom: 0;
}

a {
  color: var(--secondary);
  text-decoration: none;
  transition: color var(--duration-base) var(--ease-out);
}

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

/* ============================================
   CUSTOM SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--bg-page);
}

::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover {
  background: #94a3b8;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.section-padding {
  padding: var(--space-2xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--secondary);
  background: var(--secondary-light);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: var(--space-sm);
}

.section-divider {
  width: 48px;
  height: 3px;
  background: linear-gradient(90deg, var(--secondary), #60a5fa);
  border-radius: var(--radius-pill);
  margin: 0 auto;
}

/* Header / Navbar custom styles (moved from inline) */
.navbar-custom .navbar-brand {
  font-weight: 700 !important;
  font-size: 1.5rem !important;
  color: #0F172A !important;
  max-width: 200px;
  display: flex;
  align-items: center;
}
.navbar-custom .navbar-toggler {
  border: none !important;
}
.navbar-custom .btn-primary-custom {
  background: #2563EB !important;
  color: #fff !important;
  padding: 10px 24px !important;
  border-radius: 8px !important;
  font-weight: 600 !important;
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  text-decoration: none !important;
}


/* Color Utilities */
.text-gradient {
  background: linear-gradient(135deg, var(--secondary) 0%, #60a5fa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-gradient-primary {
  background: linear-gradient(
    135deg,
    var(--secondary) 0%,
    var(--secondary-hover) 100%
  );
}

/* ============================================
   BUTTONS
   ============================================ */
.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(
    135deg,
    var(--secondary) 0%,
    var(--secondary-hover) 100%
  );
  color: #ffffff;
  border: none;
  padding: 14px 28px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-spring);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary-custom:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
  color: #ffffff;
}

.btn-primary-custom:active {
  transform: translateY(0);
}

.btn-outline-custom {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-dark);
  border: 1.5px solid var(--border);
  padding: 13px 28px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-spring);
  text-decoration: none;
  white-space: nowrap;
}

.btn-outline-custom:hover {
  border-color: var(--secondary);
  color: var(--secondary);
  background: rgba(37, 99, 235, 0.04);
  transform: translateY(-2px);
}

/* ============================================
   ANIMATIONS / KEYFRAMES
   ============================================ */
@keyframes float {
  0%,
  100% {
    transform: translateY(0px) rotate(-0.5deg);
  }

  50% {
    transform: translateY(-18px) rotate(0.5deg);
  }
}

@keyframes logoLoop {
  0% {
    transform: translateX(0);
  }

  100% {
    transform: translateX(calc(-200px * 8));
  }
}

@keyframes shake {
  0%,
  90%,
  100% {
    transform: scale(1) rotate(0deg);
  }

  92%,
  96% {
    transform: scale(1.1) rotate(-10deg);
  }

  94%,
  98% {
    transform: scale(1.1) rotate(10deg);
  }
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.5);
  }

  70% {
    transform: scale(1);
    box-shadow: 0 0 0 12px rgba(239, 68, 68, 0);
  }

  100% {
    transform: scale(0.9);
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
  }
}

@keyframes slideInRight {
  from {
    transform: translateX(120%);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@keyframes slideOutRight {
  from {
    transform: translateX(0);
    opacity: 1;
  }

  to {
    transform: translateX(120%);
    opacity: 0;
  }
}

@keyframes fadeInUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }

  100% {
    background-position: 200% 0;
  }
}

.floating-img {
  animation: float 7s ease-in-out infinite;
  will-change: transform;
  border-radius: 20px;
}

.hero-section .floating-img {
  aspect-ratio: 3 / 2;
  object-fit: cover;
  width: 100%;
  max-width: 680px;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar-custom {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  transition:
    background-color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-slow) var(--ease-spring),
    padding var(--duration-base) var(--ease-out);
  padding-top: 5px;
  padding-bottom: 5px;
}

.navbar-custom.navbar-scrolled {
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.12);
  padding-top: 2px;
  padding-bottom: 2px;
}

.navbar-custom .navbar-brand span {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.375rem;
  letter-spacing: -0.03em;
  color: var(--text-dark);
}

.navbar-custom .nav-link {
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-body) !important;
  padding: 6px 4px !important;
  transition: color var(--duration-fast) var(--ease-out);
}

.navbar-custom .nav-link:hover {
  color: var(--secondary) !important;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
  padding: 100px 0 90px;
  background:
    radial-gradient(
      ellipse at 75% 15%,
      rgba(37, 99, 235, 0.06) 0%,
      transparent 55%
    ),
    radial-gradient(
      ellipse at 20% 80%,
      rgba(34, 197, 94, 0.04) 0%,
      transparent 50%
    );
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 8px 18px;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-body);
  margin-bottom: 24px;
  box-shadow: var(--shadow-xs);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.1rem, 5vw, 3.2rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-dark);
  margin-bottom: 12px;
}

.hero-subtitle {
  font-family: var(--font-heading);
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 600;
  color: var(--text-body);
  line-height: 1.5;
  margin-bottom: 20px;
}

.hero-description {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 1.8;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 32px;
}

/* Trust Badges */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 28px;
  max-width: 420px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
}

.trust-item i {
  color: var(--accent);
  font-size: 1rem;
  flex-shrink: 0;
}

/* ============================================
   COMMITMENT SECTION
   ============================================ */
.commitment-section {
  background: var(--bg-section-alt);
  padding: var(--space-2xl) 0;
}

.card-feature {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  box-shadow: var(--shadow-xs);
  transition: all var(--duration-slow) var(--ease-spring);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.card-feature::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--secondary), #60a5fa);
  transform: scaleX(0);
  transition: transform var(--duration-base) var(--ease-out);
}

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

.card-feature:hover::before {
  transform: scaleX(1);
}

.card-feature-icon {
  width: 64px;
  height: 64px;
  background: var(--secondary-light);
  color: var(--secondary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin: 0 auto 20px;
  transition: all var(--duration-base) var(--ease-spring);
}

.card-feature:hover .card-feature-icon {
  background: var(--secondary);
  color: #fff;
  transform: scale(1.1) rotate(-5deg);
}

.card-feature-image {
  height: 150px;
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 20px;
  background: #f2f6fc;
  transition: transform var(--duration-base) var(--ease-spring);
}

.card-feature-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-feature:hover .card-feature-image {
  transform: scale(1.04);
}

.card-feature h4 {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.card-feature p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================================
   PHONE CATEGORIES
   ============================================ */
.categories-section {
  padding: var(--space-2xl) 0;
  background: var(--bg-white);
}

.device-card {
  background: var(--bg-white);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px 22px;
  text-align: center;
  box-shadow: var(--shadow-xs);
  transition: all var(--duration-slow) var(--ease-spring);
  height: 100%;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.device-card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 2px solid var(--secondary);
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-out);
}

.device-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.device-card:hover::after {
  opacity: 1;
}

.device-card-icon {
  height: 230px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #f2f6fc;
  transition: transform var(--duration-base) var(--ease-spring);
}

.device-card-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.device-card:hover .device-card-icon {
  transform: scale(1.08) translateY(-4px);
}

.device-card h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 6px;
}

.device-card p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  line-height: 1.5;
}

.link-detail {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--secondary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--duration-fast) var(--ease-out);
}

.link-detail:hover {
  gap: 10px;
  color: var(--secondary-hover);
}

/* Mobile Swiper for categories */
.swiper-categories {
  padding-bottom: 30px !important;
}

.swiper-categories .swiper-pagination-bullet {
  background: var(--secondary);
}

/* ============================================
   PROCESS TIMELINE (3 STEPS)
   ============================================ */
.process-section {
  padding: 100px 0;
  background: linear-gradient(180deg, #f8fbff 0%, #eef5ff 100%);
}

.process-horizontal {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-top: 60px;
}

.process-item {
  flex: 1;
  max-width: 360px;
  background: #fff;
  border-radius: 24px;
  padding: 40px 30px;
  text-align: center;
  position: relative;
  border: 1px solid #e5edf9;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
  transition: all 0.35s ease;
}

.process-item:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.15);
  border-color: var(--secondary);
}

.process-number {
  position: absolute;
  top: -18px;
  left: 50%;
  transform: translateX(-50%);
  min-width: 60px;
  height: 36px;
  padding: 0 16px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--secondary), var(--secondary-hover));
  color: #fff;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

.process-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: rgba(37, 99, 235, 0.08);
  color: var(--secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
}

.process-image {
  width: 100px;
  height: 100px;
  margin: 0 auto 24px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid rgba(37, 99, 235, 0.1);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.process-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.process-item:hover .process-image {
  transform: scale(1.08);
  border-color: var(--secondary);
}

.process-item h4 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-dark);
}

.process-item p {
  color: var(--text-muted);
  line-height: 1.8;
  margin: 0;
}

.process-arrow {
  color: var(--secondary);
  font-size: 30px;
  flex-shrink: 0;
  opacity: 0.6;
}

/* ============================================
   WHY CHOOSE US
   ============================================ */
.why-section {
  padding: var(--space-2xl) 0;
  background: var(--bg-white);
}

.why-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-xs);
  transition: all var(--duration-slow) var(--ease-spring);
  height: 100%;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.why-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--secondary-light);
}

.why-icon-wrap {
  width: 52px;
  height: 52px;
  background: var(--secondary-light);
  color: var(--secondary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
  transition: all var(--duration-base) var(--ease-spring);
}

.why-card:hover .why-icon-wrap {
  background: var(--secondary);
  color: #fff;
  transform: rotate(-8deg) scale(1.05);
}

.why-card h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-dark);
}

.why-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ============================================
   REVIEWS / TESTIMONIALS
   ============================================ */
.reviews-section {
  padding: var(--space-2xl) 0;
  background: var(--bg-section-alt);
}

.review-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.review-stars {
  color: var(--warning);
  font-size: 0.875rem;
  letter-spacing: 2px;
  margin-bottom: 16px;
}

.review-quote {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-body);
  font-style: italic;
  flex: 1;
  margin-bottom: 24px;
  position: relative;
  padding-left: 20px;
}

.review-quote::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -4px;
  font-size: 2.5rem;
  line-height: 1;
  color: var(--secondary-light);
  font-family: Georgia, serif;
  font-style: normal;
}

.review-transaction {
  position: relative;
  margin: 0 0 20px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-page);
  border: 1px solid var(--border);
}

.review-transaction img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.review-transaction figcaption {
  position: absolute;
  left: 10px;
  bottom: 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border-radius: var(--radius-pill);
  background: rgba(15, 23, 42, 0.78);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 600;
  line-height: 1.2;
  backdrop-filter: blur(8px);
}

.review-transaction figcaption i {
  color: var(--accent);
}

.review-author {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--border);
  padding-top: 18px;
}

.review-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--secondary-light);
  flex-shrink: 0;
}

.review-name {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 2px;
}

.review-device {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.swiper-reviews .swiper-pagination-bullet-active {
  background: var(--secondary);
}

/* ============================================
   BRANDS TICKER
   ============================================ */
.brands-section {
  padding: 50px 0;
  background: var(--bg-white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.brands-track-wrap {
  display: flex;
  overflow: hidden;
  user-select: none;
  -webkit-mask-image: linear-gradient(
    90deg,
    transparent 0%,
    #000 15%,
    #000 85%,
    transparent 100%
  );
  mask-image: linear-gradient(
    90deg,
    transparent 0%,
    #000 15%,
    #000 85%,
    transparent 100%
  );
}

.brands-track {
  display: flex;
  width: max-content;
  animation: logoLoop 28s linear infinite;
  align-items: center;
}

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

.brand-item {
  width: 180px;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 20px;
}

.brand-item i,
.brand-item span {
  opacity: 0.4;
  transition: all var(--duration-base) var(--ease-out);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
}

.brand-item:hover i,
.brand-item:hover span {
  opacity: 1;
  transform: scale(1.1);
}

/* ============================================
   FAQ ACCORDION
   ============================================ */
.faq-section {
  padding: var(--space-2xl) 0;
  background: var(--bg-page);
}

.faq-accordion .accordion-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg) !important;
  margin-bottom: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition:
    border-color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
}

.faq-accordion .accordion-item:hover {
  border-color: #93c5fd;
  box-shadow: var(--shadow-sm);
}

.faq-accordion .accordion-button {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-dark);
  background: var(--bg-white);
  padding: 20px 22px;
  box-shadow: none !important;
  letter-spacing: -0.01em;
  line-height: 1.5;
}

.faq-accordion .accordion-button:not(.collapsed) {
  color: var(--secondary);
  background: rgba(37, 99, 235, 0.02);
}

.faq-accordion .accordion-button::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%232563EB'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
  width: 1.1rem;
  height: 1.1rem;
  background-size: 1.1rem;
  transition: transform var(--duration-base) var(--ease-out);
}

.faq-accordion .accordion-button.collapsed::after {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%2364748B'%3e%3cpath fill-rule='evenodd' d='M1.646 4.646a.5.5 0 0 1 .708 0L8 10.293l5.646-5.647a.5.5 0 0 1 .708.708l-6 6a.5.5 0 0 1-.708 0l-6-6a.5.5 0 0 1 0-.708z'/%3e%3c/svg%3e");
}

.faq-accordion .accordion-body {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-body);
  background: var(--bg-white);
  padding: 6px 22px 22px;
  border-top: 1px solid var(--border);
}

/* ============================================
   FOOTER FORM (CONVERSION FORM)
   ============================================ */
img.logo-footer {
  display: flex;
  margin: 0 auto;
}

.footer-form-section {
  padding: var(--space-2xl) 0;
  background: linear-gradient(
    180deg,
    var(--bg-section-alt) 0%,
    var(--bg-white) 100%
  );
}

.form-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.form-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--secondary), #60a5fa, var(--accent));
}

.form-card-title {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 3vw, 1.875rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.form-label-custom {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 8px;
  display: block;
}

.form-control-custom,
.form-select-custom {
  width: 100%;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--text-dark);
  background: var(--bg-white);
  appearance: none;
  -webkit-appearance: none;
  transition:
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
  line-height: 1.5;
}

.form-control-custom:focus,
.form-select-custom:focus {
  outline: none;
  border-color: var(--secondary);
  box-shadow: var(--shadow-glow);
}

.form-control-custom::placeholder {
  color: var(--text-light);
  font-weight: 400;
}

/* Select arrow */
.select-wrap {
  position: relative;
}

.select-wrap::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--text-muted);
  pointer-events: none;
}

/* Drag Drop Upload */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  background: var(--bg-page);
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
}

..upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--secondary);
  background: rgba(37, 99, 235, 0.02);
}

.upload-zone i {
  font-size: 2rem;
  color: var(--text-light);
  margin-bottom: 10px;
  display: block;
}

.upload-preview-wrap {
  margin-top: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.upload-preview-item {
  position: relative;
  width: 100px;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-white);
}

.upload-preview-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.upload-preview-item .upload-remove-btn {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 22px;
  height: 22px;
  background: var(--danger);
  color: #fff;
  border: 2px solid var(--bg-white);
  border-radius: 50%;
  font-size: 0.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  line-height: 1;
  z-index: 2;
}

.upload-preview-item .upload-remove-btn:hover {
  transform: scale(1.05);
}

/* ============================================
   FOOTER
   ============================================ */
.footer-section {
  background: var(--primary);
  color: #94a3b8;
  padding: 80px 0 32px;
  font-size: 0.9rem;
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.375rem;
  letter-spacing: -0.03em;
  color: #fff;
}

.footer-desc {
  font-size: 0.875rem;
  line-height: 1.75;
  color: #94a3b8;
  margin-top: 14px;
  margin-bottom: 20px;
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-heading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 2px;
  background: var(--secondary);
  border-radius: var(--radius-pill);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-links a {
  color: #94a3b8;
  font-size: 0.875rem;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--duration-fast) var(--ease-out);
}

.footer-links i.fa-solid {
  padding-top: 7px;
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.social-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.social-btn {
  width: 38px;
  height: 38px;
  background: rgba(255, 255, 255, 0.06);
  color: #94a3b8;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  text-decoration: none;
  transition: all var(--duration-base) var(--ease-spring);
}

.social-btn:hover {
  background: var(--secondary);
  color: #fff;
  transform: translateY(-3px);
}

.footer-divider {
  margin-top: 60px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.07);
}

.footer-copy {
  font-size: 0.8125rem;
  color: #64748b;
  margin: 0;
}

/* ============================================
   STICKY DESKTOP FLOATING ACTIONS
   ============================================ */
.sticky-desktop-actions {
  position: fixed;
  right: 24px;
  bottom: 30px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.fab {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-lg);
  transition: all var(--duration-base) var(--ease-spring);
  position: relative;
}

.fab:hover {
  transform: scale(1.15) translateY(-2px);
  color: #fff;
}

.fab-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--primary);
  color: #fff;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-fast) var(--ease-out);
}

.fab-tooltip::after {
  content: "";
  position: absolute;
  left: 100%;
  top: 50%;
  transform: translateY(-50%);
  border: 5px solid transparent;
  border-left-color: var(--primary);
}

.fab:hover .fab-tooltip {
  opacity: 1;
}

.fab-zalo {
  background: #0068ff;
}

.fab-messenger {
  background: linear-gradient(135deg, #9b59b6, #3498db);
}

.fab-call {
  background: var(--danger);
  animation: pulse-ring 2.5s infinite;
}

/* ============================================
   STICKY MOBILE BOTTOM CTA
   ============================================ */
.sticky-mobile-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.07);
  padding: 10px 0;
  display: none;
}

.mobile-cta-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-decoration: none;
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--text-dark);
  transition: color var(--duration-fast) var(--ease-out);
}

.mobile-cta-btn i {
  font-size: 1.3rem;
}

.mobile-cta-btn.btn-call {
  color: var(--danger);
}

.mobile-cta-btn.btn-messenger {
  color: #8b5cf6;
}

.mobile-cta-btn.btn-zalo {
  color: #0068ff;
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.toast-custom {
  position: fixed;
  top: 24px;
  right: 24px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 22px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  z-index: 99999;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  color: #fff;
  max-width: 420px;
  animation: slideInRight var(--duration-base) var(--ease-spring) forwards;
}

.toast-custom.toast-success {
  background: var(--accent);
}

.toast-custom.toast-error {
  background: var(--danger);
}

/* ============================================
   THANK YOU PAGE
   ============================================ */
.ty-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background:
    radial-gradient(
      ellipse at 30% 70%,
      rgba(34, 197, 94, 0.06) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse at 70% 20%,
      rgba(37, 99, 235, 0.06) 0%,
      transparent 50%
    ),
    var(--bg-page);
}

.ty-card {
  background: var(--bg-white);
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  text-align: center;
  box-shadow: var(--shadow-xl);
  max-width: 580px;
  width: 100%;
  animation: fadeInUp 0.5s var(--ease-spring) both;
  border: 1px solid var(--border);
}

.ty-check {
  width: 80px;
  height: 80px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.25rem;
  margin: 0 auto 28px;
}

.ty-title {
  font-family: var(--font-heading);
  font-size: 1.875rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-dark);
  margin-bottom: 14px;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1199.98px) {
  :root {
    --space-2xl: 80px;
  }
}

@media (max-width: 991.98px) {
  :root {
    --space-2xl: 70px;
  }

  /* Swiper Category Active slide and hover cleanup on Mobile */
  .swiper-categories {
    overflow: visible !important;
    padding: 16px 0 48px !important;
  }

  .swiper-categories .device-card {
    transition: transform var(--duration-base) var(--ease-spring), border-color var(--duration-base) var(--ease-out), box-shadow var(--duration-base) var(--ease-out) !important;
    transform: scale(0.92) !important;
    opacity: 0.7;
    margin: 0 !important;
  }

  .swiper-categories .device-card:hover {
    transform: scale(0.92) !important;
    box-shadow: var(--shadow-sm) !important;
  }

  .swiper-categories .swiper-slide-active .device-card {
    transform: scale(1.04) !important;
    opacity: 1 !important;
    box-shadow: var(--shadow-lg) !important;
    border-color: var(--secondary) !important;
  }

  .swiper-categories .swiper-slide-active .device-card::after {
    opacity: 1 !important;
  }

  .swiper-categories .swiper-slide-active .device-card:hover {
    transform: scale(1.04) !important;
  }

  .navbar-custom {
    padding: 8px 0;
  }

  .navbar-custom .navbar-brand img {
    width: 70px !important;
  }

  .navbar-custom .navbar-toggler {
    width: 42px;
    height: 42px;
    padding: 9px;
    border: 1px solid var(--border) !important;
    border-radius: 10px;
    background: transparent;
    box-shadow: none;
    transition: border-color var(--duration-fast) var(--ease-out),
      background-color var(--duration-fast) var(--ease-out);
  }

  .navbar-custom .navbar-toggler:focus {
    box-shadow: none;
    border-color: var(--border-focus) !important;
  }

  .navbar-custom .navbar-toggler[aria-expanded="true"] {
    border-color: var(--border-focus) !important;
    background: rgba(37, 99, 235, 0.06);
  }

  .navbar-custom .navbar-toggler-icon {
    width: 22px;
    height: 22px;
    background-size: 22px;
  }

  .navbar-custom .navbar-collapse {
    margin-top: 8px;
    padding: 6px 0 10px;
    border-top: 1px solid var(--border);
    background: transparent;
    box-shadow: none;
  }

  .navbar-custom .navbar-nav {
    gap: 0 !important;
  }

  .navbar-custom .nav-link {
    position: relative;
    padding: 13px 4px !important;
    border-bottom: 1px solid rgba(226, 232, 240, 0.72);
    border-radius: 0;
    font-size: 0.9375rem;
    font-weight: 600;
    transition: all var(--duration-fast) var(--ease-out);
  }

  .navbar-custom .nav-link::after {
    content: "\f054";
    position: absolute;
    right: 4px;
    top: 50%;
    transform: translateY(-50%);
    font-family: "Font Awesome 6 Free";
    font-size: 0.68rem;
    font-weight: 900;
    color: var(--text-light);
  }

  .navbar-custom .nav-link:hover,
  .navbar-custom .nav-link:focus {
    padding-left: 8px !important;
    color: var(--secondary) !important;
    background: transparent;
  }

  .navbar-custom .navbar-nav .btn-primary-custom {
    width: 100%;
    justify-content: center;
    margin-top: 12px;
    padding: 12px 20px;
    border-radius: 10px;
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.2);
  }

  .hero-section {
    padding: 110px 0 70px;
    text-align: center;
  }

  .trust-grid {
    margin: 28px auto 0;
    max-width: 100%;
    justify-items: center;
  }

  .hero-description {
    max-width: 100%;
  }

  /* Hide desktop sticky on tablet/mobile */
  .sticky-desktop-actions {
    display: none;
  }

  /* Desktop timeline hidden on mobile */
  .timeline-wrapper {
    display: none;
  }
}

@media (max-width: 768.98px) {
  :root {
    --space-2xl: 60px;
  }

  .hero-actions {
    justify-content: center;
  }

  .process-section {
    padding: 70px 0;
  }

  .process-horizontal {
    flex-direction: column;
    gap: 0;
    margin-top: 48px;
  }

  .process-item {
    flex: none;
    width: 100%;
    max-width: 520px;
    padding: 36px 22px 28px;
    border-radius: 20px;
  }

  .process-item:hover {
    transform: translateY(-4px);
  }

  .process-icon {
    width: 68px;
    height: 68px;
    margin-bottom: 18px;
    font-size: 27px;
  }

  .process-image {
    width: 80px;
    height: 80px;
    margin-bottom: 18px;
  }

  .process-item h4 {
    font-size: 1.1rem;
  }

  .process-item p {
    font-size: 0.9rem;
    line-height: 1.7;
  }

  .process-arrow {
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
  }

  .process-arrow i {
    transform: rotate(90deg);
  }

  .sticky-mobile-cta {
    display: block;
  }

  body {
    padding-bottom: 68px;
  }

  .form-card {
    padding: 28px 20px;
  }

  .ty-card {
    padding: 36px 24px;
  }

  .ty-title {
    font-size: 1.5rem;
  }

  .navbar-custom .navbar-brand span {
    font-size: 1.2rem;
  }
  .section-header {
    margin-bottom: var(--space-md);
  }
  .brands-section {
    padding: 36px 0;
  }
  .categories-section,
  .process-section,
  .commitment-section,
  .reviews-section {
    padding: var(--space-md) 0;
  }
  .hero-section {
    padding: 40px 0;
    text-align: center;
  }
}

@media (max-width: 575.98px) {
  .hero-title {
    font-size: 1.85rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .trust-grid {
    grid-template-columns: repeat(2,1fr);
  }
  .btn-primary-custom.btn-form{
    font-size: 14px !important;
  }
  .footer-section .col-lg-4.col-md-6{
    margin-top: 0 !important;
  }
  .footer-divider{
        margin-top: 30px;
  }
    .footer-section .col-lg-4.col-md-6 .footer-heading{
      margin-top: 28px !important;
    }
}