/* ============================================================
   OEM Như Phong — Main Stylesheet
   Vanilla CSS · Design tokens from Pencil ui-oem.pen
   ============================================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* ---- CSS Variables ---- */
:root {
  --color-primary: #0052CC;
  --color-primary-dark: #003D99;
  --color-accent: #00C853;
  --color-accent-dark: #00A844;
  --bg-page: #F4F5F7;
  --bg-surface: #FFFFFF;
  --bg-navy: #0A2540;
  --text-primary: #0A2540;
  --text-secondary: #425466;
  --text-muted: #A0B3C6;
  --border-color: #E8EEF4;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.10);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.12);
  --shadow-primary: 0 8px 24px rgba(0, 82, 204, 0.30);
  --shadow-accent: 0 8px 24px rgba(0, 200, 83, 0.30);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 32px;
  --radius-pill: 999px;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* Skip to content (accessibility + Core Web Vitals) */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--color-primary);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  padding: 10px 20px;
  border-radius: 0 0 8px 8px;
  z-index: 9999;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 0; }

/* ---- Typography ---- */
h1, h2, h3, h4 { font-weight: 900; line-height: 1.15; }
.section-label {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.2;
}
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header .section-title { margin-top: 12px; }

/* ---- Layout ---- */
.container {
  max-width: 1280px;
  width: 100%;
  margin: 0 auto;
  padding: 0 40px;
}
.section { padding: 120px 0; }

/* ===================================================
   NAVBAR
   =================================================== */
/* ---- Top Announcement ---- */
.top-announcement {
  background: var(--color-primary-dark);
  color: #fff;
  padding: 8px 0;
  font-size: 13px;
  font-weight: 500;
}
.ta-inner { display: flex; align-items: center; justify-content: center; gap: 12px; }
.ta-badge { background: var(--color-accent); color: #fff; padding: 2px 8px; border-radius: 4px; font-weight: 800; font-size: 11px; letter-spacing: 1px; text-transform: uppercase; }
.ta-link { color: #fff; text-decoration: none; transition: opacity 0.2s; }
.ta-link:hover { opacity: 0.8; text-decoration: underline; }

.navbar {
  position: sticky;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--bg-surface);
  height: 80px;
  display: flex;
  align-items: center;
  transition: box-shadow var(--transition);
}
.navbar.scrolled {
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.navbar-logo {
  flex-shrink: 0;
}
.navbar-logo img {
  height: 44px;
  width: auto;
  object-fit: contain;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
  flex: 1;
  justify-content: center;
}
.nav-links a {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width var(--transition);
}
.nav-links a:hover, .nav-links a.active {
  color: var(--text-primary);
  font-weight: 800;
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }

.nav-dropdown {
  position: relative;
}
.dropdown-trigger {
  display: flex !important;
  align-items: center;
  gap: 4px;
}
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  transform: translateY(16px);
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  padding: 8px;
  margin: 0;
  list-style: none;
  min-width: 240px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  z-index: 1010;
}
.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -20px;
  left: 0;
  right: 0;
  height: 20px;
}
.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(8px);
}
.dropdown-menu li { display: block; }
.dropdown-menu li a {
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  border-radius: 6px;
}
.dropdown-menu li a::after { display: none !important; }
.dropdown-menu li a:hover {
  color: var(--color-primary);
  background: var(--bg-page);
  font-weight: 700;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font);
  font-size: 15px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-primary);
  transition: all var(--transition);
}
.btn-cta svg { width: 18px; height: 18px; }
.btn-cta:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0,82,204,0.40);
}

/* ===================================================
   HERO SECTION
   =================================================== */
.hero {
  padding: 80px 0 100px;
  background: var(--bg-surface);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-label { color: var(--color-accent); }
.hero-title {
  font-size: clamp(40px, 5vw, 60px);
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.1;
  margin: 12px 0 24px;
}
.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 520px;
  margin-bottom: 40px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: center;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font);
  font-size: 16px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  padding: 16px 32px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-primary);
  transition: all var(--transition);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0,82,204,0.40);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--color-primary);
  font-family: var(--font);
  font-size: 16px;
  font-weight: 600;
  border: 2px solid var(--color-primary);
  cursor: pointer;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-2px);
}
.hero-image {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 4/3;
}
.hero-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.hero-image:hover img { transform: scale(1.03); }

/* ===================================================
   ABOUT SECTION
   =================================================== */
.about { background: var(--bg-surface); }
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: stretch;
}
.about-image {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  height: 100%;
}
.about-image img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.about-image:hover img { transform: scale(1.03); }
.about-label { color: var(--color-primary); }
.about-title {
  font-size: clamp(32px, 4vw, 48px);
  margin: 12px 0 20px;
}
.about-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 40px;
}
.stats-row {
  display: flex;
  gap: 48px;
  padding-top: 16px;
  border-top: 2px solid var(--border-color);
}
.stat-item { display: flex; flex-direction: column; }
.stat-number {
  font-size: 44px;
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1;
}
.stat-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* ===================================================
   SERVICES SECTION
   =================================================== */
.services {
  background: var(--bg-page);
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.service-card {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  padding: 40px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.10), 0 1px 4px rgba(0, 0, 0, 0.06);
  transition: all var(--transition);
}
.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.16), 0 4px 12px rgba(0, 0, 0, 0.08);
}
.service-card.featured {
  background: var(--bg-navy);
}
.service-icon {
  width: 64px; height: 64px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}
.service-icon svg { width: 32px; height: 32px; }
.service-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.service-card.featured h3 { color: #fff; }
.service-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}
.service-card.featured p { color: var(--text-muted); }

/* ===================================================
   WHY CHOOSE US SECTION
   =================================================== */
.why-us {
  background: var(--bg-navy);
  color: #fff;
}
.why-us .section-title { color: #fff; }
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.why-card {
  background: rgba(255,255,255,0.06);
  border-radius: var(--radius-md);
  padding: 40px;
  transition: all var(--transition);
  border: 1px solid rgba(255,255,255,0.08);
}
.why-card:hover {
  background: rgba(255,255,255,0.10);
  transform: translateY(-4px);
}
.why-icon {
  width: 64px; height: 64px;
  border-radius: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}
.why-icon svg { width: 28px; height: 28px; }
.why-card h3 {
  font-size: 22px;
  color: #fff;
  margin-bottom: 12px;
}
.why-card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===================================================
   PROCESS SECTION
   =================================================== */
.process { background: var(--bg-surface); }
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.process-step {
  position: relative;
  padding-left: 8px;
}
.process-step::before {
  content: '';
  position: absolute;
  top: 36px;
  right: -16px;
  width: 32px;
  height: 2px;
  background: var(--border-color);
}
.process-step:last-child::before { display: none; }
.step-number {
  font-size: 56px;
  font-weight: 900;
  line-height: 1;
  margin-bottom: 12px;
}
.step-number.primary { color: var(--color-primary); }
.step-number.accent { color: var(--color-accent); }
.process-step h3 {
  font-size: 22px;
  margin-bottom: 10px;
  color: var(--text-primary);
}
.process-step p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===================================================
   PARTNERS SECTION — MARQUEE SLIDER
   =================================================== */
.partners { background: var(--bg-page); }
.partners .section-header .section-title { max-width: 700px; margin: 12px auto 0; }

.marquee-wrapper {
  overflow: hidden;
  width: 100%;
  mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
  -webkit-mask-image: linear-gradient(to right, transparent 0%, black 10%, black 90%, transparent 100%);
}
.marquee-track {
  display: flex;
  gap: 32px;
  width: max-content;
  animation: marquee 35s linear infinite;
}
.marquee-track:hover { animation-play-state: paused; }
@keyframes marquee {
  0%   { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.partner-card {
  flex-shrink: 0;
  width: 220px;
  height: 110px;
  background: var(--bg-surface);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  transition: box-shadow var(--transition);
}
.partner-card:hover {
  box-shadow: var(--shadow-md);
}
.partner-card img {
  max-width: 160px;
  max-height: 70px;
  object-fit: contain;
  filter: grayscale(20%);
  transition: filter var(--transition);
}
.partner-card:hover img { filter: grayscale(0%); }

/* Trust Badges (About section) */
.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0;
}
.trust-badge {
  background: var(--bg-surface);
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

/* ===================================================
   PRODUCTS OEM SECTION
   =================================================== */
.products { background: var(--bg-surface); }
.section-desc {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 16px auto 0;
  line-height: 1.7;
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 8px;
}
.product-card {
  background: var(--bg-page);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  border: 1.5px solid var(--border-color);
  position: relative;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0;
}
.product-card:first-child {
  border-color: var(--color-primary);
  background: #EEF4FF;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}
.product-badge {
  position: absolute;
  top: -12px;
  left: 24px;
  background: var(--color-primary);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}
.product-icon {
  font-size: 40px;
  margin-bottom: 16px;
  line-height: 1;
}
.product-card h3 {
  font-size: 19px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.product-card > p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}
.product-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
  margin-top: auto;
}
.product-features li {
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.product-features li::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: 900;
  font-size: 14px;
  flex-shrink: 0;
}
.products-cta {
  margin-top: 40px;
  text-align: center;
  padding: 24px 32px;
  background: var(--bg-page);
  border-radius: var(--radius-md);
  border: 1.5px dashed var(--color-primary);
}
.products-cta p {
  font-size: 16px;
  color: var(--text-secondary);
}
.products-cta a {
  color: var(--color-primary);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.products-cta a:hover { color: var(--color-primary-dark); }

/* ===================================================
   FAQ SECTION
   =================================================== */
.faq { background: var(--bg-page); }
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--bg-surface);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: box-shadow var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-md);
}
.faq-item[open] {
  border-color: var(--color-primary);
  box-shadow: 0 4px 24px rgba(0, 82, 204, 0.12);
}
.faq-question {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-primary);
  padding: 24px 28px;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  user-select: none;
  transition: color var(--transition);
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after {
  content: '+';
  font-size: 24px;
  font-weight: 400;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: transform var(--transition);
  line-height: 1;
}
.faq-item[open] .faq-question { color: var(--color-primary); }
.faq-item[open] .faq-question::after { transform: rotate(45deg); }
.faq-answer {
  padding: 0 28px 24px;
  border-top: 1px solid var(--border-color);
}
.faq-answer p {
  padding-top: 20px;
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}
.faq-answer a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: text-decoration-color var(--transition);
}
.faq-answer a:hover { text-decoration-color: var(--color-primary); }

/* ===================================================
   FOOTER
   =================================================== */
footer {
  background: var(--bg-navy);
  color: #fff;
  padding: 80px 0 48px;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1fr;
  gap: 64px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.10);
}
.footer-logo { height: 44px; width: auto; margin-bottom: 20px; }
.footer-tagline {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 320px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 20px;
}
.footer-col p, .footer-col address {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  font-style: normal;
}
/* Google Maps embed in footer */
.map-embed {
  position: relative;        /* anchor cho logo pin */
  margin-top: 16px;
  border-radius: 12px;
  /* overflow: hidden bỏ đi – nó clip mất logo pin */
  border: 1.5px solid rgba(255,255,255,0.10);
  box-shadow: 0 4px 16px rgba(0,0,0,0.3);
}
.map-embed iframe {
  display: block;
  width: 100%;
  height: 200px;
  border-radius: 11px;       /* border-radius chuyển sang iframe */
  filter: grayscale(20%) brightness(0.9);
  transition: filter 0.3s ease;
}
.map-embed:hover iframe {
  filter: grayscale(0%) brightness(1);
}
/* Logo pin center overlay */
.map-logo-pin {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -55%);
  pointer-events: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 10;
  animation: pin-float 3s ease-in-out infinite;
}
.map-logo-pin img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: #fff;
  padding: 5px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.45), 0 0 0 3px rgba(255,255,255,0.95);
  object-fit: contain;
  display: block;
}
/* Triangle pin tail */
.map-logo-pin::after {
  content: '';
  width: 0;
  height: 0;
  border-left: 7px solid transparent;
  border-right: 7px solid transparent;
  border-top: 10px solid #fff;
  filter: drop-shadow(0 3px 4px rgba(0,0,0,0.25));
  margin-top: -2px;
}
@keyframes pin-float {
  0%, 100% { transform: translate(-50%, -55%); }
  50%       { transform: translate(-50%, -62%); }
}
.socials {
  display: flex;
  gap: 12px;
}
.social-btn {
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1.5px solid rgba(160, 179, 198, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.social-btn svg { width: 20px; height: 20px; }
.social-btn img { width: 22px; height: 22px; object-fit: contain; }
.social-btn:hover {
  background: rgba(255,255,255,0.10);
  border-color: rgba(255,255,255,0.40);
  transform: translateY(-2px);
}
.footer-bottom {
  padding-top: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.footer-bottom p {
  font-size: 14px;
  color: var(--text-muted);
}

/* ===================================================
   FLOATING ACTION BUTTONS (FAB)
   =================================================== */
.fab-group {
  position: fixed;
  bottom: 32px;
  right: 28px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.fab-item {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}
/* Tinh tế hơn: pulse ring nhỏ và subtle */
.fab-ring {
  position: absolute;
  border-radius: 50%;
  animation: pulse 3s ease-out infinite;
  pointer-events: none;
}
.fab-item:first-child .fab-ring {
  width: 72px; height: 72px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 200, 83, 0.15);
  animation-delay: 0s;
}
.fab-item:nth-child(2) .fab-ring {
  width: 72px; height: 72px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0, 104, 255, 0.15);
  animation-delay: 1s;
}
@keyframes pulse {
  0%   { transform: translate(-50%,-50%) scale(0.9); opacity: 0.6; }
  70%  { transform: translate(-50%,-50%) scale(1.25); opacity: 0; }
  100% { transform: translate(-50%,-50%) scale(1.25); opacity: 0; }
}
.fab-btn {
  width: 52px; height: 52px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.fab-btn:hover {
  transform: scale(1.08);
  border-radius: 26px;
}
.fab-phone {
  background: #00C853;
  box-shadow: 0 4px 16px rgba(0, 200, 83, 0.35);
}
.fab-zalo {
  background: #0068FF;
  box-shadow: 0 4px 16px rgba(0, 104, 255, 0.35);
}
.fab-btn img {
  width: 26px; height: 26px;
  object-fit: contain;
}
.fab-btn svg { width: 22px; height: 22px; }

/* Tooltip pill – gọn, elegant */
.fab-item::before {
  content: attr(data-tooltip);
  position: absolute;
  right: calc(100% + 10px);
  background: rgba(10, 25, 47, 0.92);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 10px;
  border-radius: 20px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;

}
.fab-item:hover::before { opacity: 1; }

/* ===================================================
   SCROLL REVEAL ANIMATIONS
   =================================================== */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ===================================================
   RESPONSIVE
   =================================================== */
@media (max-width: 1024px) {
  .hero-inner, .about-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero { padding-top: 120px; }
  .services-grid, .why-grid { grid-template-columns: 1fr 1fr; }
  .process-grid { grid-template-columns: 1fr 1fr; }
  .process-step::before { display: none; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .products-grid { grid-template-columns: 1fr 1fr; }
}
.mobile-menu-toggle { display: none; background: none; border: none; cursor: pointer; color: var(--text-primary); padding: 4px; }

@media (max-width: 900px) {
  .ta-inner { align-items: flex-start; text-align: left; }
  .ta-link { font-size: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
  
  /* Mobile Nav */
  .mobile-menu-toggle { display: block; }
  .navbar-inner .btn-cta { display: none; } /* Hide CTA on mobile to save space, rely on FAB */
  .nav-links { 
    display: flex; flex-direction: column; 
    align-items: stretch;
    position: absolute; top: 80px; left: 0; right: 0; 
    background: var(--bg-surface); padding: 16px 24px 32px; gap: 0;
    box-shadow: 0 16px 24px rgba(0,0,0,0.1); clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
    transition: clip-path var(--transition);
    border-top: 1px solid var(--border-color);
  }
  .nav-links.active { clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%); }
  
  .nav-links > li { border-bottom: 1px solid var(--border-color); }
  .nav-links > li:last-child { border-bottom: none; }
  
  .nav-links a { font-size: 16px; padding: 16px 0; display: block; width: 100%; }
  .dropdown-trigger { pointer-events: none; display: flex; justify-content: space-between; align-items: center; }
  
  .dropdown-menu { 
    position: static; opacity: 1; visibility: visible; transform: none; 
    box-shadow: none; border: none; padding: 0 0 16px 16px; margin-top: -8px; 
    background: transparent; border-left: 2px solid var(--border-color); margin-left: 8px;
    display: flex; flex-direction: column; gap: 8px;
  }
  .dropdown-menu::before { display: none; }
  .dropdown-menu li a { font-size: 15px; padding: 8px 0; color: var(--text-secondary); pointer-events: auto; border: none; font-weight: 500; }
}

@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .section { padding: 72px 0; }
  
  .services-grid, .why-grid, .process-grid, .products-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 40px; }
  .stats-row { gap: 24px; flex-wrap: wrap; }
  .stat-number { font-size: 36px; }
  .fab-group { right: 16px; bottom: 20px; }
  .section-desc { font-size: 15px; }
}

/* ===================================================
   SUBPAGE: STATS BAR
   =================================================== */
.stats-bar {
  background: var(--color-primary);
  padding: 40px 0;
}
.stats-bar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.sb-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  text-align: center;
}
.sb-val { font-size: 36px; font-weight: 800; color: #fff; line-height: 1; }
.sb-val.accent { color: var(--color-accent); }
.sb-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  white-space: nowrap;
}
.sb-div {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.2);
}

/* ===================================================
   SUBPAGE: PRICING SECTION
   =================================================== */
.pricing-section {
  background: var(--bg-navy);
  color: #fff;
  padding: 100px 0;
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.pricing-card {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px;
  padding: 36px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
  position: relative;
}
.pricing-card:hover { transform: translateY(-4px); background: rgba(255,255,255,0.12); }
.pricing-card.featured {
  background: var(--color-primary);
  border: 1px solid var(--color-primary);
  box-shadow: 0 16px 48px rgba(0,82,204,0.4);
}
.pricing-card.featured:hover { background: #004BBF; }
.pc-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-accent);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: 20px;
  white-space: nowrap;
}
.pc-label { font-size: 13px; font-weight: 700; color: #fff; letter-spacing: 1.5px; margin-bottom: 4px; }
.pc-label.accent { color: var(--color-accent); }
.pc-desc { font-size: 14px; color: rgba(255,255,255,0.7); line-height: 1.5; margin-bottom: 24px;}
.pc-price { font-size: 32px; font-weight: 800; color: #fff; margin-bottom: 4px;}
.pc-subdesc { font-size: 14px; color: rgba(255,255,255,0.6); }
.pc-divider { border: none; height: 1px; background: rgba(255,255,255,0.12); margin: 24px 0; }
.pricing-card.featured .pc-divider { background: rgba(255,255,255,0.2); }
.pc-feats { list-style: none; display: flex; flex-direction: column; gap: 12px; margin-bottom: 32px; flex: 1; padding: 0;}
.pc-feats li { font-size: 14px; color: #fff; line-height: 1.5; }
.pc-btn {
  text-align: center;
  padding: 14px 0;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid rgba(255,255,255,0.3);
  color: #fff;
  transition: all var(--transition);
  display: block;
}
.pc-btn:hover { background: rgba(255,255,255,0.1); }
.pricing-card.featured .pc-btn {
  background: #fff;
  color: var(--color-primary);
  border: none;
}
.pricing-card.featured .pc-btn:hover { background: #f0f4ff; }

/* ===================================================
   SUBPAGE: PROCESS TIMELINE (Horizontal/Vertical hybrid)
   =================================================== */
.sub-process {
  background: var(--bg-surface);
  padding: 100px 0;
}
.process-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.sp-card {
  background: #F0F4FF;
  padding: 32px 24px;
  border-radius: 16px;
  border: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: transform var(--transition);
}
.sp-card:hover { transform: translateY(-4px); }
.sp-card.success-stage {
  background: #E8F5E9;
}
.sp-num {
  width: 52px;
  height: 52px;
  background: var(--color-primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 16px;
}
.sp-card.success-stage .sp-num {
  background: var(--color-accent);
}
.sp-title { font-size: 16px; font-weight: 700; color: var(--text-primary); margin-bottom: 8px; }
.sp-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.5; }

/* ===================================================
   SUBPAGE: FAQ ACCORDION
   =================================================== */
.faq-section { background: var(--bg-page); }
.faq-container {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
}
.faq-left h2 { font-size: clamp(28px, 4vw, 36px); line-height: 1.2; margin-bottom: 16px; font-weight: 800; color: var(--text-primary); }
.faq-left p { font-size: 15px; color: var(--text-secondary); line-height: 1.6; margin-bottom: 24px; }

.faq-accordion details {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}
.faq-accordion summary {
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none; /* Hide default arrow */
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-accordion summary::-webkit-details-marker { display: none; }
.faq-accordion summary::after {
  content: '+';
  font-size: 20px;
  color: var(--color-primary);
}
.faq-accordion details[open] summary::after { content: '−'; }
.faq-accordion details[open] summary { border-bottom: 1px solid var(--border-color); }
.faq-accordion p { padding: 20px 24px; color: var(--text-secondary); font-size: 14px; line-height: 1.6; margin: 0; }

/* ===================================================
   SUBPAGE: CTA STRIP
   =================================================== */
.cta-strip {
  background: linear-gradient(135deg, var(--color-primary) 0%, #003A8C 100%);
  padding: 80px 0;
  text-align: center;
  color: #fff;
  border-radius: var(--radius-md);
  margin: 64px auto;
  box-shadow: 0 16px 48px rgba(0, 82, 204, 0.4);
}
.cta-strip h2 { font-size: clamp(28px, 4vw, 40px); font-weight: 800; margin-bottom: 16px; color: #fff; }
.cta-strip p { font-size: 17px; color: rgba(255,255,255,0.8); margin-bottom: 32px; max-width: 650px; margin-left: auto; margin-right: auto; }
.cta-btns { display: flex; justify-content: center; gap: 16px; }
.cta-btns .btn-primary { background: #fff; color: var(--color-primary); box-shadow: 0 4px 16px rgba(255,255,255,0.2); }
.cta-btns .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(255,255,255,0.4); background: var(--bg-page); }
.cta-btns .btn-outline { border-color: rgba(255,255,255,0.4); color: #fff; }
.cta-btns .btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; }

/* ===================================================
   MEDIA QUERIES FOR SUBPAGES
   =================================================== */
@media (max-width: 900px) {
  .process-list { grid-template-columns: repeat(2, 1fr); }
  .faq-container { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 768px) {
  .stats-bar-inner { flex-direction: column; gap: 24px; padding: 24px 0; }
  .sb-div { width: 40px; height: 1px; }
  .pricing-grid { grid-template-columns: 1fr; gap: 16px; margin-top: 32px; }
  .process-list { grid-template-columns: 1fr; gap: 16px; margin-top: 32px; }
  .cta-strip { padding: 48px 20px; border-radius: 0; margin: 0; }
  .cta-btns { flex-direction: column; width: 100%; }
}