/* ==========================================================================
   NGUYEN AN INTERLINING - 1-TO-1 PIXEL PERFECT REPLICA STYLESHEET
   ========================================================================== */

/* Google Serif Font for Title Replica */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,600;0,700;0,800;0,900;1,600&display=swap');

/* Local Gilroy Web Font Family Definitions */
@font-face {
  font-family: 'Gilroy';
  src: url('../fonts/gilroy/Gilroy-Light.ttf') format('truetype');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Gilroy';
  src: url('../fonts/gilroy/Gilroy-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Gilroy';
  src: url('../fonts/gilroy/Gilroy-Medium.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Gilroy';
  src: url('../fonts/gilroy/Gilroy-SemiBold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Gilroy';
  src: url('../fonts/gilroy/Gilroy-Bold.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Gilroy';
  src: url('../fonts/gilroy/Gilroy-ExtraBold.ttf') format('truetype');
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Gilroy';
  src: url('../fonts/gilroy/Gilroy-Black.ttf') format('truetype');
  font-weight: 900;
  font-style: normal;
  font-display: swap;
}

/* ==========================================================================
   Design System Tokens & Global Styles (Phudu Font for Titles + Gilroy for Body)
   ========================================================================== */
:root {
  --color-primary-blue: #0071ce;
  --color-primary-hover: #005bb5;
  --color-primary-dark: #0b1320;
  
  --font-title: 'Phudu', sans-serif;
  --font-serif: 'Phudu', sans-serif;
  --font-sans: 'Gilroy', 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
}

/* Enforce Phudu Font for Titles and Headings */
.font-serif-title,
.font-phudu,
h1, h2, h3,
.hero-title,
.section-title {
  font-family: var(--font-title) !important;
}

/* Enforce Max Width 1440px for Site Containers */
.max-w-7xl,
.max-w-site,
.max-w-1440 {
  max-width: 1440px !important;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  color: #1e293b;
  background-color: #ffffff;
}

/* Enforce Gilroy Font for Navbar & Navigation Links */
header,
#main-nav,
nav,
.nav-link,
.nav-link-active,
header a,
header button {
  font-family: var(--font-sans) !important;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: #f1f5f9;
}
::-webkit-scrollbar-thumb {
  background: #0071ce;
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: #005bb5;
}

/* Selection Color */
::selection {
  background-color: rgba(0, 113, 206, 0.2);
  color: #0071ce;
}

.font-serif-title {
  font-family: var(--font-serif);
}

/* Navigation Link & Sliding Indicator (Closer to text & Smooth Glide) */
.nav-link-active {
  color: #0071ce !important;
  font-weight: 800 !important;
}

#nav-indicator {
  position: absolute !important;
  bottom: -2px !important;
  height: 2.5px !important;
  background-color: #0071ce !important;
  border-radius: 2px !important;
  margin-left: 0 !important;
  margin-right: 0 !important;
  transition: left 0.28s cubic-bezier(0.4, 0, 0.2, 1), width 0.28s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.15s ease !important;
  pointer-events: none !important;
  z-index: 30 !important;
}

/* Hero Section Background Overlay (Solid white fade on left/top for crystal-clear mobile text readability) */
.hero-gradient-overlay {
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.96) 0%, rgba(255, 255, 255, 0.85) 50%, rgba(255, 255, 255, 0.15) 80%, transparent 100%);
  pointer-events: none;
}

@media (max-width: 767px) {
  .hero-gradient-overlay {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.97) 0%, rgba(255, 255, 255, 0.90) 60%, rgba(255, 255, 255, 0.4) 85%, transparent 100%);
  }
}

/* Product Card Circular Badge Overlap */
.card-badge-overlap {
  position: absolute;
  bottom: -20px;
  left: 20px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: #ffffff;
  box-shadow: none !important;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #e2e8f0;
  z-index: 30 !important;
}

/* Infinite Marquee Scroll Animation for Certifications Slider */
@keyframes infinite-scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.animate-infinite-scroll {
  display: flex;
  width: max-content;
  animation: infinite-scroll 22s linear infinite;
}

.animate-infinite-scroll:hover {
  animation-play-state: paused;
}

.marquee-container {
  overflow: hidden;
  position: relative;
  width: 100%;
  mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 8%, black 92%, transparent 100%);
}

/* Card Hover Action Bar (At rest: simple blue arrow on left. On hover: solid blue bar, white XEM THÊM text, arrow slides to right end) */
.card-hover-bar {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  margin: 0 8px 8px 8px;
  min-height: 40px;
  background-color: transparent;
  border-radius: 0.125rem;
  transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.group:hover .card-hover-bar {
  background-color: #0071ce;
}

.card-hover-text {
  font-size: 11px;
  font-weight: 800;
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0;
  transform: translateX(-10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
  white-space: nowrap;
}

.group:hover .card-hover-text {
  opacity: 1;
  transform: translateX(0);
}

.card-hover-arrow {
  color: #0071ce;
  font-size: 12px;
  position: absolute;
  left: 16px;
  transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1), color 0.3s ease;
}

.group:hover .card-hover-arrow {
  color: #ffffff;
  left: calc(100% - 28px);
}

/* Progress bar top fixed */
#scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, #0071ce, #48a0e5, #00a3e0);
  z-index: 100;
  width: 0%;
  transition: width 0.1s ease-out;
}

/* Modal Overlay Styling */
.modal-overlay {
  background: rgba(11, 19, 32, 0.7);
  backdrop-filter: blur(4px);
}

/* GSAP Page Preloader Overlay */
#page-preloader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background-color: #0b1320;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: auto;
  transition: visibility 0.4s ease;
}

.preloader-spinner {
  width: 54px;
  height: 54px;
  border: 3px solid rgba(0, 113, 206, 0.2);
  border-top-color: #0071ce;
  border-right-color: #00a3e0;
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* GSAP Animation Helper Fallbacks */
.gsap-hidden-init {
  opacity: 0;
  transform: translateY(30px);
}