/* ==========================================================================
   GBC SOURCING — STYLE SHEET
   Brand: Deep Navy / Gold — premium international B2B sourcing
   ========================================================================== */

:root {
  --navy-deep: #061C32;
  --navy-dark: #031426;
  --gold: #D9A441;
  --gold-light: #E8C27D;
  --white: #FFFFFF;
  --bg-light: #F7F8FA;
  --text-dark: #10243A;
  --text-muted: #56677D;
  --border-soft: #E4E8EE;

  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --container: 1180px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --shadow-card: 0 12px 32px rgba(6, 28, 50, 0.08);
}

/* ---------- RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Times New Roman MT Condensed", "Times New Roman", serif;
  color: var(--text-dark);
  background: var(--bg-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; font-size: 1rem; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 500; letter-spacing: -0.01em; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

.container { max-width: var(--container); margin: 0 auto; padding: 0 32px; }

/* ---------- REVEAL ANIMATION ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px 32px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}
.btn--gold {
  background: var(--gold);
  color: var(--navy-dark);
}
.btn--gold:hover { background: var(--gold-light); transform: translateY(-1px); box-shadow: 0 10px 24px rgba(217, 164, 65, 0.35); }
.btn--outline {
  border: 1.5px solid var(--navy-deep);
  color: var(--navy-deep);
  background: transparent;
}
.btn--outline:hover { background: var(--navy-deep); color: var(--white); }
.btn--outline-light {
  border: 1.5px solid rgba(255,255,255,0.55);
  color: var(--white);
}
.btn--outline-light:hover { background: var(--white); color: var(--navy-dark); }
.btn--small { padding: 11px 22px; font-size: 0.85rem; }
.btn--block { width: 100%; }

/* ---------- EYEBROW / LABELS ---------- */
.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.eyebrow--gold { color: var(--gold); }
.eyebrow--light { color: rgba(255,255,255,0.8); }

/* ==========================================================================
   NAVIGATION
   ========================================================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 500;
  background: rgba(6, 28, 50, 0.0);
  transition: background 0.35s ease, box-shadow 0.35s ease, padding 0.35s ease;
}
.nav__inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 26px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: padding 0.35s ease;
}
.nav.is-scrolled {
  background: rgba(6, 28, 50, 0.94);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 24px rgba(0,0,0,0.15);
}
.nav.is-scrolled .nav__inner { padding: 14px 32px; }

.nav__brand { display: flex; align-items: center; gap: 12px; }
.nav__logo { width: 55px; height: 55px; object-fit: contain; }
.nav__brand-name { font-family: var(--font-display); font-size: 1.25rem; color: var(--white); letter-spacing: 0.01em; }

.nav__links { display: flex; align-items: center; gap: 34px; }
.nav__links a {
  color: rgba(255,255,255,0.82);
  font-size: 0.92rem;
  font-weight: 500;
  position: relative;
  padding: 4px 0;
  transition: color 0.2s ease;
}
.nav__links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 1.5px;
  background: var(--gold);
  transition: width 0.25s ease;
}
.nav__links a:hover { color: var(--white); }
.nav__links a:hover::after { width: 100%; }

.nav__actions { display: flex; align-items: center; gap: 18px; }
.nav__burger { display: none; flex-direction: column; gap: 5px; width: 26px; }
.nav__burger span { display: block; height: 2px; background: var(--white); border-radius: 2px; transition: transform 0.3s ease, opacity 0.3s ease; }

.nav__mobile {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: var(--navy-dark);
  padding: 12px 32px 28px;
}
.nav__mobile a {
  color: rgba(255,255,255,0.88);
  padding: 13px 0;
  font-size: 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav__mobile .btn { margin-top: 16px; text-align: center; }
.nav.is-open .nav__mobile { display: flex; }
.nav.is-open .nav__burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav.is-open .nav__burger span:nth-child(2) { opacity: 0; }
.nav.is-open .nav__burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero__bg {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.04);
}
.hero__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(3,20,38,0.78) 0%, rgba(3,20,38,0.88) 55%, rgba(3,20,38,0.97) 100%);
}
.hero__content {
  position: relative;
  z-index: 2;
  max-width: 760px;
  margin: 0 auto;
  padding: 160px 32px 90px;
  text-align: center;
}
.hero__title {
  font-family: "Times New Roman MT Condensed", "Times New Roman", serif;
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  color: var(--white);
  line-height: 1.05;
  margin-bottom: 22px;
  white-space: nowrap;
}
.hero__subtitle {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--gold-light);
  font-weight: 500;
  margin-bottom: 18px;
}
.hero__desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.82);
  max-width: 600px;
  margin: 0 auto 40px;
}
.hero__actions {
  display: flex;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 46px;
}
.hero__badges {
  display: flex;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  font-size: 0.95rem;
  color: rgba(255,255,255,0.75);
}

/* ==========================================================================
   SECTION GENERIC
   ========================================================================== */
.section { padding: 110px 0; }
.section--dark { background: var(--navy-deep); color: var(--white); }
.section__head { max-width: 640px; margin: 0 auto 60px; text-align: center; }
.section__head--light { color: var(--white); }
.section__title { font-size: clamp(1.9rem, 3.4vw, 2.6rem); color: var(--text-dark); line-height: 1.2; }
.section__title--light { color: var(--white); }
.section__desc { margin-top: 16px; color: var(--text-muted); font-size: 1.05rem; }
.section__cta { text-align: center; margin-top: 56px; }

/* ==========================================================================
   GRIDS / CARDS
   ========================================================================== */
.grid { display: grid; gap: 26px; }
.grid--5 { grid-template-columns: repeat(5, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }

/* Service cards */
.card--service {
  background: var(--white);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 34px 26px;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}
.card--service:hover { transform: translateY(-6px); box-shadow: var(--shadow-card); border-color: transparent; }
.card--service i { width: 30px; height: 30px; color: var(--gold); margin-bottom: 20px; stroke-width: 1.5; }
.card--service h3 { font-size: 1.1rem; margin-bottom: 10px; color: var(--text-dark); }
.card--service p { font-size: 0.92rem; color: var(--text-muted); }

/* Category cards */
.grid--categories .cat-card {
  position: relative;
  height: 260px;
  border-radius: var(--radius-md);
  background-size: cover;
  background-position: center;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 24px;
  transition: transform 0.35s ease;
}
.grid--categories .cat-card:hover { transform: scale(1.02); }
.cat-card__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(3,20,38,0.15) 0%, rgba(3,20,38,0.9) 100%);
}
.cat-card__label {
  position: relative; z-index: 1;
  color: var(--white);
  font-family: var(--font-display);
  font-size: 1.15rem;
}

/* Why GBC */
.grid--why .why-card { text-align: left; padding: 6px 0; }
.grid--why i { width: 26px; height: 26px; color: var(--gold); margin-bottom: 18px; stroke-width: 1.5; }
.grid--why h3 { font-size: 1.05rem; color: var(--white); margin-bottom: 10px; }
.grid--why p { font-size: 0.9rem; color: rgba(255,255,255,0.68); }

/* Who we serve */
.grid--serve .serve-card {
  text-align: center;
  padding: 34px 20px;
  background: var(--white);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.grid--serve .serve-card:hover { box-shadow: var(--shadow-card); transform: translateY(-4px); }
.grid--serve i { width: 28px; height: 28px; color: var(--navy-deep); margin-bottom: 16px; stroke-width: 1.5; }
.grid--serve h3 { font-size: 1rem; margin-bottom: 8px; }
.grid--serve p { font-size: 0.87rem; color: var(--text-muted); }

/* ==========================================================================
   TIMELINE (How it works)
   ========================================================================== */
.timeline {
  display: flex;
  gap: 22px;
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  top: 20px; left: 0; right: 0;
  height: 1px;
  background: var(--border-soft);
}
.timeline__item {
  flex: 1;
  position: relative;
  padding-top: 54px;
}
.timeline__num {
  position: absolute;
  top: 0; left: 0;
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--gold);
  background: var(--bg-light);
  padding-right: 14px;
}
.timeline__item h3 { font-size: 1.02rem; margin-bottom: 8px; color: var(--text-dark); }
.timeline__item p { font-size: 0.88rem; color: var(--text-muted); }

/* ==========================================================================
   SOURCING DEPOSIT
   ========================================================================== */
.deposit { background: var(--white); }
.deposit__inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 70px;
  align-items: center;
  background: var(--navy-deep);
  border-radius: 18px;
  padding: 70px;
}
.deposit__text .section__title { color: var(--white); margin-bottom: 20px; }
.deposit__body { color: rgba(255,255,255,0.75); margin-bottom: 18px; }
.deposit__highlight {
  color: var(--gold-light);
  font-weight: 500;
  border-left: 2px solid var(--gold);
  padding-left: 16px;
  margin-bottom: 18px;
}
.deposit__note { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin-bottom: 34px; }

.deposit__card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(217,164,65,0.35);
  border-radius: var(--radius-md);
  padding: 44px 34px;
  text-align: center;
}
.deposit__amount {
  display: block;
  font-family: var(--font-display);
  font-size: 3.6rem;
  color: var(--gold);
  line-height: 1;
}
.deposit__label {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  margin-top: 10px;
  margin-bottom: 30px;
}
.deposit__list { text-align: left; display: flex; flex-direction: column; gap: 14px; }
.deposit__list li { display: flex; align-items: center; gap: 10px; font-size: 0.9rem; color: rgba(255,255,255,0.82); }
.deposit__list i { width: 16px; height: 16px; color: var(--gold); flex-shrink: 0; }

/* ==========================================================================
   CASE STUDY
   ========================================================================== */
.case { position: relative; padding: 130px 0; overflow: hidden; }
.case__bg { position: absolute; inset: 0; background-size: cover; background-position: center; }
.case__overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(3,20,38,0.95) 15%, rgba(3,20,38,0.55) 100%); }
.case__content { position: relative; z-index: 1; max-width: 620px; }
.case__desc { color: rgba(255,255,255,0.8); margin: 20px 0 34px; font-size: 1.02rem; }

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about__inner {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 70px;
  align-items: center;
}
.about__text p { color: var(--text-muted); margin-top: 16px; }
.about__text .section__title { margin-bottom: 6px; }

.about__card {
  background: var(--white);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  padding: 44px 36px;
  text-align: center;
  box-shadow: var(--shadow-card);
}
.about__logo { width: 56px; height: 56px; object-fit: contain; margin: 0 auto 18px; }
.about__brand { display: block; font-family: var(--font-display); font-size: 1.35rem; color: var(--navy-deep); }
.about__tagline { display: block; font-size: 0.88rem; color: var(--gold); margin-top: 4px; letter-spacing: 0.03em; }
.about__divider { width: 40px; height: 1px; background: var(--border-soft); margin: 26px auto; }
.about__legal { display: block; font-size: 1rem; color: var(--text-dark); }
.about__legal-en { display: block; font-size: 0.78rem; color: var(--text-muted); margin-top: 6px; }

/* ==========================================================================
   FINAL CTA / CONTACT FORM
   ========================================================================== */
.final-cta { background: var(--navy-dark); }
.final-cta__inner {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 70px;
}
.final-cta__sub { color: var(--gold-light); font-size: 1.15rem; margin: 16px 0 30px; }
.final-cta__contact { display: flex; flex-direction: column; gap: 14px; margin-bottom: 36px; }
.final-cta__contact a { display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,0.85); font-size: 0.98rem; transition: color 0.2s ease; }
.final-cta__contact a:hover { color: var(--gold); }
.final-cta__contact i { width: 18px; height: 18px; color: var(--gold); }

.final-cta__wechat {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.final-cta__wechat img { width: 84px; height: 84px; border-radius: 8px; background: rgba(255,255,255,0.06); object-fit: cover; }
.final-cta__wechat span { font-size: 0.85rem; color: rgba(255,255,255,0.6); }

.form {
  background: var(--white);
  border-radius: var(--radius-md);
  padding: 40px;
  position: relative;
}
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form__field { margin-bottom: 20px; display: flex; flex-direction: column; }
.form__field label { font-size: 0.83rem; font-weight: 600; color: var(--text-dark); margin-bottom: 8px; }
.form__field input, .form__field textarea {
  padding: 13px 14px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  background: var(--bg-light);
  color: var(--text-dark);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form__field input:focus, .form__field textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(217,164,65,0.15);
}
.form__field textarea { resize: vertical; min-height: 90px; }
.form__field.has-error input,
.form__field.has-error textarea { border-color: #C0392B; }
.form__error { font-size: 0.78rem; color: #C0392B; min-height: 16px; margin-top: 6px; }

.form__success {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-top: 20px;
  padding: 18px;
  background: rgba(39, 122, 82, 0.08);
  border: 1px solid rgba(39, 122, 82, 0.25);
  border-radius: var(--radius-sm);
}
.form__success i { width: 20px; height: 20px; color: #277A52; flex-shrink: 0; margin-top: 2px; }
.form__success p { font-size: 0.9rem; color: #1e5c3e; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer { background: var(--navy-dark); color: rgba(255,255,255,0.7); padding-top: 70px; }
.footer__inner {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer__col { display: flex; flex-direction: column; gap: 12px; }
.footer__col--brand { gap: 6px; }
.footer__logo { width: 34px; height: 34px; margin-bottom: 8px; }
.footer__name { font-family: var(--font-display); font-size: 1.15rem; color: var(--white); }
.footer__tagline { font-size: 0.85rem; color: var(--gold); }
.footer__col h4 { font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; color: rgba(255,255,255,0.45); margin-bottom: 6px; font-weight: 600; }
.footer__col a, .footer__col span { font-size: 0.9rem; color: rgba(255,255,255,0.68); transition: color 0.2s ease; }
.footer__col a:hover { color: var(--gold); }
.footer__legal { line-height: 1.5; }
.footer__social { display: flex; gap: 14px; }
.footer__social a { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border: 1px solid rgba(255,255,255,0.18); border-radius: 50%; }
.footer__social i { width: 16px; height: 16px; }
.footer__social a:hover { border-color: var(--gold); }
.footer__bottom { text-align: center; padding: 26px 0; font-size: 0.82rem; color: rgba(255,255,255,0.4); }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .grid--5 { grid-template-columns: repeat(3, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .deposit__inner { grid-template-columns: 1fr; padding: 50px; }
  .about__inner { grid-template-columns: 1fr; }
  .final-cta__inner { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr 1fr; }
  .timeline { flex-wrap: wrap; }
}

@media (max-width: 860px) {
  .nav__links, .nav__actions .btn { display: none; }
  .nav__burger { display: flex; }
  .nav__inner { padding: 18px 24px; }

  .grid--5 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; }

  .timeline { flex-direction: column; gap: 34px; }
  .timeline::before { top: 0; bottom: 0; left: 20px; right: auto; width: 1px; height: auto; }
  .timeline__item { padding-top: 0; padding-left: 54px; }
  .timeline__num { top: -4px; left: 0; background: var(--bg-light); padding: 0 10px 0 0; }

  .section { padding: 80px 0; }
  .container { padding: 0 22px; }
  .hero__content { padding: 140px 22px 70px; }
  .deposit__inner { padding: 36px 26px; }

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

@media (max-width: 560px) {
  .grid--5, .grid--3 { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .hero__badges { flex-direction: column; gap: 10px; align-items: center; }
  .case { padding: 90px 0; }
  .form { padding: 26px; }
}