/* ============================================
   GroundSource — Design Tokens
============================================ */
:root {
  /* The Global Logistics Standard — Trust + Precision */
  --color-bg: #F8F9FA;          /* Off-white surface/neutral */
  --color-bg-alt: #ECEFF2;      /* Slate-tinted alternate section bg */
  --color-surface: #FFFFFF;
  --color-ink: #1F2937;         /* Dark Charcoal — text */
  --color-ink-soft: #4A5B6C;    /* Industrial Slate — secondary (30%) */
  --color-ink-faint: #8A97A3;
  --color-border: #DCE2E7;
  --color-accent: #E67E22;      /* Cargo Amber — accent (10%) */
  --color-accent-dark: #C0670F;
  --color-accent-soft: #FBE6CC;
  --color-slate: #4A5B6C;       /* Industrial Slate */
  --color-slate-soft: #E3E7EA;
  --color-dark: #0F1E36;        /* Deep Navy — primary (60%) */
  --color-dark-soft: #4A5B6C;   /* Industrial Slate, used as dark gradient stop */

  --font-serif: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container: 1180px;
  --radius: 4px;
  --shadow-sm: 0 1px 2px rgba(15, 30, 54, 0.06);
  --shadow-md: 0 8px 24px rgba(15, 30, 54, 0.08);
  --shadow-lg: 0 20px 50px rgba(15, 30, 54, 0.12);
}

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

html { scroll-behavior: smooth; }

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

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

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-dark);
  line-height: 1.15;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

section { position: relative; }

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.section-head {
  max-width: 680px;
  margin-bottom: 56px;
}

.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

.section-head h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: 16px;
}

.section-head p {
  color: var(--color-ink-soft);
  font-size: 1.0625rem;
}

.section-pad { padding: 96px 0; }
.section-pad-sm { padding: 64px 0; }

@media (max-width: 768px) {
  .section-pad { padding: 64px 0; }
  .section-pad-sm { padding: 48px 0; }
}

/* ============================================
   Buttons
============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 30px;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-dark);
  color: #fff;
}
.btn-primary:hover { background: #0A1424; transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-dark);
}
.btn-outline:hover { border-color: var(--color-dark); }

.btn-accent {
  background: linear-gradient(100deg, var(--color-accent) 0%, var(--color-accent-dark) 130%);
  color: #fff;
}
.btn-accent:hover { filter: brightness(1.05); transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-block { width: 100%; }

.btn-lg { padding: 18px 36px; font-size: 1rem; }

/* ============================================
   Header / Nav
============================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(248, 249, 250, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  max-width: var(--container);
  margin: 0 auto;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--color-dark);
  letter-spacing: -0.01em;
}
.logo span { color: var(--color-accent); }

.nav-links {
  display: flex;
  gap: 36px;
  align-items: center;
}

.nav-links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-ink-soft);
  transition: color 0.15s ease;
}
.nav-links a:hover { color: var(--color-dark); }

.nav-cta { display: flex; align-items: center; gap: 20px; }
.btn-text-short { display: none; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-dark);
  margin: 5px 0;
  transition: 0.2s;
}

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: block; }
  .nav-cta .btn span.btn-text-full { display: none; }
  .nav-cta .btn span.btn-text-short { display: inline; }
}

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 8px 24px 24px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
  font-weight: 500;
  color: var(--color-ink);
}
.mobile-menu a:last-child { border-bottom: none; }

/* ============================================
   Hero
============================================ */
.hero {
  padding: 88px 0 80px;
  background:
    radial-gradient(ellipse 900px 500px at 85% -10%, var(--color-accent-soft) 0%, transparent 60%),
    radial-gradient(ellipse 600px 400px at 0% 110%, rgba(15, 30, 54, 0.06) 0%, transparent 65%),
    var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 64px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  border: 1px solid var(--color-border);
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-ink-soft);
  background: var(--color-surface);
  margin-bottom: 28px;
}
.hero-tag .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.hero h1 {
  font-size: clamp(2.25rem, 4.6vw, 3.75rem);
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 1.1875rem;
  color: var(--color-ink-soft);
  max-width: 560px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.hero-note {
  display: flex;
  gap: 12px;
  padding: 16px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.9375rem;
  color: var(--color-ink-soft);
  max-width: 540px;
}
.hero-note strong { color: var(--color-dark); }

.hero-visual {
  position: relative;
}

.visual-frame {
  aspect-ratio: 4/5;
  background: linear-gradient(160deg, var(--color-dark) 0%, var(--color-dark-soft) 100%);
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.visual-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.visual-card {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow-md);
  max-width: 260px;
}
.visual-card .label { font-size: 0.75rem; color: var(--color-ink-faint); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 6px; }
.visual-card .value { font-family: var(--font-serif); font-size: 1.0625rem; color: var(--color-dark); font-weight: 600; }

@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { order: -1; max-width: 420px; margin: 0 auto; }
  .visual-card { left: 12px; bottom: -16px; }
}

/* ============================================
   Logos / positioning strip
============================================ */
.positioning-strip {
  padding: 40px 0;
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}
.positioning-strip .container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  text-align: center;
}
.positioning-strip p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.125rem;
  color: var(--color-ink-soft);
}
.positioning-strip strong { color: var(--color-dark); font-weight: 600; }

/* ============================================
   Services grid
============================================ */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1px;
  background: var(--color-border);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  overflow: hidden;
}

.service-card {
  background: var(--color-surface);
  padding: 32px 28px;
  transition: background 0.2s ease;
}
.service-card:hover { background: var(--color-bg-alt); }

.service-icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: var(--color-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent-dark);
  margin-bottom: 20px;
}

.service-card h3 {
  font-size: 1.0625rem;
  font-family: var(--font-sans);
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-dark);
}

.service-card p {
  font-size: 0.9375rem;
  color: var(--color-ink-soft);
}

/* ============================================
   Why GroundSource
============================================ */
.why-section { background: var(--color-dark); color: #fff; }
.why-section .section-head h2 { color: #fff; }
.why-section .section-head p { color: rgba(255,255,255,0.65); }
.why-section .eyebrow { color: var(--color-accent); }

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
}

.why-card {
  padding: 28px 0 0;
  border-top: 1px solid rgba(255,255,255,0.14);
}

.why-num {
  font-family: var(--font-serif);
  font-size: 0.9375rem;
  color: var(--color-accent);
  margin-bottom: 14px;
  display: block;
}

.why-card h3 {
  color: #fff;
  font-size: 1.1875rem;
  margin-bottom: 12px;
}

.why-card p {
  color: rgba(255,255,255,0.65);
  font-size: 0.9375rem;
}

/* ============================================
   Who we help
============================================ */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}

.audience-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 22px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-dark);
}

.audience-icon {
  width: 34px; height: 34px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  display: flex; align-items: center; justify-content: center;
}

/* ============================================
   Why Vietnam
============================================ */
.vietnam-section { background: var(--color-bg-alt); }

.vietnam-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.category-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 8px;
}
.category-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--color-ink-soft);
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}
.category-list li svg { color: var(--color-accent); flex-shrink: 0; }

.vietnam-note {
  margin-top: 28px;
  padding: 20px 22px;
  background: var(--color-surface);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 4px 4px 0;
  font-size: 0.9375rem;
  color: var(--color-ink-soft);
}

.vietnam-visual {
  aspect-ratio: 1/1;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.vietnam-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 860px) {
  .vietnam-layout { grid-template-columns: 1fr; }
  .vietnam-visual { order: -1; max-width: 420px; margin: 0 auto; }
}

/* ============================================
   Process
============================================ */
.process-list {
  display: flex;
  flex-direction: column;
}

.process-item {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--color-border);
}
.process-item:first-child { padding-top: 0; }
.process-item:last-child { border-bottom: none; }

.process-num {
  font-family: var(--font-serif);
  font-size: 2rem;
  color: var(--color-accent);
  font-weight: 600;
}

.process-item h3 {
  font-size: 1.1875rem;
  margin-bottom: 8px;
}

.process-item p {
  color: var(--color-ink-soft);
  max-width: 560px;
}

@media (max-width: 640px) {
  .process-item { grid-template-columns: 48px 1fr; gap: 16px; }
  .process-num { font-size: 1.5rem; }
}

/* ============================================
   Lead form
============================================ */
.form-section {
  background: var(--color-dark);
  color: #fff;
}

.form-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
}

.form-layout .section-head h2 { color: #fff; }
.form-layout .section-head p { color: rgba(255,255,255,0.65); }

.qualify-box {
  margin-top: 32px;
  padding: 20px 22px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius);
  font-size: 0.9375rem;
  color: rgba(255,255,255,0.75);
}
.qualify-box strong { color: #fff; }

.form-card {
  background: var(--color-surface);
  border-radius: 8px;
  padding: 40px;
  box-shadow: var(--shadow-lg);
  color: var(--color-ink);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group { margin-bottom: 20px; }
.form-group.full { grid-column: 1 / -1; }

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-dark);
  margin-bottom: 7px;
}
.form-group label .req { color: var(--color-accent); }
.form-group label .opt { color: var(--color-ink-faint); font-weight: 400; text-transform: none; letter-spacing: 0; }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-ink);
  background: var(--color-bg);
  transition: border-color 0.15s ease;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea { resize: vertical; min-height: 96px; }

.checkbox-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 8px 0 24px;
}
.checkbox-row input { width: auto; margin-top: 3px; }
.checkbox-row label { font-size: 0.875rem; font-weight: 500; color: var(--color-ink-soft); }

.form-footnote {
  font-size: 0.8125rem;
  color: var(--color-ink-faint);
  margin-top: 14px;
  text-align: center;
}

@media (max-width: 900px) {
  .form-layout { grid-template-columns: 1fr; }
  .form-card { padding: 28px 22px; }
  .form-grid { grid-template-columns: 1fr; }
}

/* ============================================
   Trust section
============================================ */
/* ============================================
   FAQ
============================================ */
.faq-list { border-top: 1px solid var(--color-border); }

.faq-item { border-bottom: 1px solid var(--color-border); }

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 4px;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-dark);
}

.faq-q .icon {
  flex-shrink: 0;
  width: 22px; height: 22px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.2s ease;
  color: var(--color-accent);
}
.faq-item.open .faq-q .icon { transform: rotate(45deg); }

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}
.faq-a-inner {
  padding: 0 4px 22px;
  color: var(--color-ink-soft);
  max-width: 720px;
}
.faq-item.open .faq-a { max-height: 400px; }

/* ============================================
   CTA banner
============================================ */
.cta-banner {
  background: var(--color-accent-soft);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 64px 0;
  text-align: center;
}
.cta-banner h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 12px; }
.cta-banner p { color: var(--color-ink-soft); margin-bottom: 28px; }

/* ============================================
   Footer
============================================ */
.site-footer {
  background: var(--color-dark);
  color: rgba(255,255,255,0.6);
  padding: 64px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

.footer-brand .logo { color: #fff; margin-bottom: 14px; }
.footer-brand p { font-size: 0.9375rem; max-width: 260px; margin-bottom: 4px; }

.footer-col h4 {
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 18px;
}

.footer-col a, .footer-col p {
  display: block;
  font-size: 0.9375rem;
  padding: 6px 0;
  color: rgba(255,255,255,0.6);
  transition: color 0.15s ease;
}
.footer-col a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 28px;
  font-size: 0.8125rem;
}

@media (max-width: 800px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 500px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ============================================
   Sticky mobile CTA
============================================ */
.sticky-cta {
  display: none;
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 200;
  padding: 12px 16px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  box-shadow: 0 -6px 24px rgba(36,28,22,0.1);
}
@media (max-width: 760px) {
  .sticky-cta.visible { display: block; }
  body { padding-bottom: 0; }
}

/* ============================================
   Legal pages
============================================ */
.legal-page { padding: 64px 0 96px; }
.legal-page .container { max-width: 760px; }
.legal-page h1 { font-size: 2rem; margin-bottom: 8px; }
.legal-page .updated { color: var(--color-ink-faint); font-size: 0.875rem; margin-bottom: 40px; }
.legal-page h2 { font-size: 1.25rem; margin: 36px 0 12px; }
.legal-page p, .legal-page li { color: var(--color-ink-soft); margin-bottom: 14px; }
.legal-page ul { padding-left: 20px; list-style: disc; }
.legal-page ul li { margin-bottom: 8px; }

/* ============================================
   Thank you page
============================================ */
.thankyou-page {
  min-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 96px 24px;
  text-align: center;
}
.thankyou-box { max-width: 560px; }
.thankyou-icon {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 28px;
}
.thankyou-box h1 { font-size: 1.875rem; margin-bottom: 16px; }
.thankyou-box p { color: var(--color-ink-soft); font-size: 1.0625rem; margin-bottom: 32px; }

/* ============================================
   Utility / reveal animation
============================================ */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}