/* =====================================================
   康穎貿易 PrimeElite Trading — Stylesheet
   配色方案 B：藏青商務 (Navy Business)
   ===================================================== */

:root {
  --navy: #0F2C4C;
  --navy-deep: #081A2E;
  --navy-mid: #1D3E5F;
  --silver: #8C9BA5;
  --silver-light: #E4E8EB;
  --bg: #FFFFFF;
  --bg-alt: #F5F6F8;
  --ink: #1A2530;
  --ink-soft: #4C5A66;
  --accent: #B98B4E;
  --white: #FFFFFF;
  --radius: 6px;
  --font-display: 'Noto Sans TC', 'Space Grotesk', sans-serif;
  --font-label: 'Space Grotesk', 'Noto Sans TC', sans-serif;
  --max-width: 1180px;
  --header-h: 76px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-display); font-weight: 700; margin: 0 0 .5em; color: var(--navy); line-height: 1.3; }
h1 { font-size: clamp(1.9rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; color: var(--ink-soft); }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

/* Language toggle visibility handled via JS text swap, no extra CSS needed */

/* ---------- Layout helpers ---------- */
.section { padding: 88px 24px; }
.section-inner { max-width: var(--max-width); margin: 0 auto; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--navy-deep); color: var(--white); }
.section-dark p, .section-dark h2 { color: var(--white); }
.section-desc { max-width: 620px; }

.eyebrow {
  font-family: var(--font-label);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .8em;
}
.eyebrow-light { color: var(--silver); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 28px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: .95rem;
  border: 1.5px solid transparent;
  transition: all .18s ease;
}
.btn-primary { background: var(--navy); color: var(--white); }
.btn-primary:hover { background: var(--navy-mid); }
.btn-outline { border-color: rgba(255,255,255,.5); color: var(--white); }
.btn-outline:hover { background: rgba(255,255,255,.12); }
.section:not(.section-dark) .btn-outline { border-color: var(--navy); color: var(--navy); }
.section:not(.section-dark) .btn-outline:hover { background: var(--navy); color: var(--white); }
.btn-small { padding: 9px 18px; font-size: .85rem; }
.btn-full { width: 100%; margin-top: 8px; }

/* ---------- Header ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--header-h);
  background: rgba(255,255,255,.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--silver-light);
}
.header-inner {
  max-width: var(--max-width); margin: 0 auto; height: 100%;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark {
  width: 40px; height: 40px; border-radius: 8px;
  background: var(--navy); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-label); font-weight: 700; font-size: .95rem;
  flex-shrink: 0;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-zh { font-weight: 700; font-size: 1.02rem; color: var(--navy); }
.logo-en { font-size: .68rem; letter-spacing: .04em; color: var(--ink-soft); }

.main-nav > ul { display: flex; gap: 34px; }
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a {
  font-weight: 500; font-size: .95rem; color: var(--ink);
  padding: 10px 2px; display: inline-block; position: relative;
}
.main-nav > ul > li > a::after {
  content: ''; position: absolute; left: 0; bottom: 4px; height: 2px; width: 0;
  background: var(--accent); transition: width .2s ease;
}
.main-nav > ul > li > a:hover::after { width: 100%; }

.dropdown {
  position: absolute; top: 100%; left: -14px; min-width: 180px;
  background: var(--white); border: 1px solid var(--silver-light);
  border-radius: var(--radius); box-shadow: 0 12px 28px rgba(15,44,76,.12);
  padding: 8px; opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: all .18s ease;
}
.has-dropdown:hover .dropdown, .has-dropdown:focus-within .dropdown {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.dropdown li a { display: block; padding: 9px 12px; border-radius: 4px; font-size: .9rem; }
.dropdown li a:hover { background: var(--bg-alt); color: var(--navy); }

.header-actions { display: flex; align-items: center; gap: 14px; }
.lang-toggle {
  background: none; border: 1px solid var(--silver); border-radius: 20px;
  padding: 6px 14px; font-size: .8rem; font-weight: 600; color: var(--ink);
}
.lang-toggle:hover { border-color: var(--navy); color: var(--navy); }

.menu-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 34px; height: 34px; background: none; border: none; padding: 0;
}
.menu-toggle span { display: block; height: 2px; width: 100%; background: var(--navy); transition: all .2s ease; }

/* ---------- Hero ---------- */
.hero {
  padding: calc(var(--header-h) + 72px) 24px 80px;
  background:
    radial-gradient(1100px 500px at 85% -10%, rgba(185,139,78,.12), transparent 60%),
    linear-gradient(180deg, var(--navy) 0%, var(--navy-deep) 100%);
  color: var(--white);
}
.hero-inner { max-width: var(--max-width); margin: 0 auto; }
.hero h1 { color: var(--white); max-width: 780px; }
.hero-desc { color: var(--silver); max-width: 560px; font-size: 1.05rem; }
.hero-cta { display: flex; gap: 14px; margin: 32px 0 64px; flex-wrap: wrap; }

.process-flow {
  display: flex; align-items: center; flex-wrap: wrap; gap: 0;
  border-top: 1px solid rgba(255,255,255,.14); padding-top: 32px;
}
.process-node { display: flex; align-items: center; gap: 10px; }
.process-num { font-family: var(--font-label); font-weight: 700; color: var(--accent); font-size: .9rem; }
.process-label { font-weight: 500; color: var(--white); font-size: .95rem; white-space: nowrap; }
.process-line { flex: 1; min-width: 24px; height: 1px; background: rgba(255,255,255,.25); margin: 0 18px; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 60px; align-items: start; }
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat-card {
  background: var(--bg-alt); border: 1px solid var(--silver-light); border-radius: var(--radius);
  padding: 22px; display: flex; flex-direction: column; gap: 6px;
}
.stat-num { font-family: var(--font-label); font-size: 1.7rem; font-weight: 700; color: var(--navy); }
.stat-label { font-size: .82rem; color: var(--ink-soft); }

/* ---------- Products / category accordion ---------- */
.category-list { display: flex; flex-direction: column; gap: 14px; margin-top: 40px; }
.category-block {
  background: var(--white); border: 1px solid var(--silver-light); border-radius: var(--radius);
  overflow: hidden;
}
.category-block summary {
  list-style: none; cursor: pointer; padding: 22px 24px;
  display: flex; align-items: center; gap: 16px;
  font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; color: var(--navy);
}
.category-block summary::-webkit-details-marker { display: none; }
.cat-icon {
  width: 38px; height: 38px; border-radius: 50%; flex-shrink: 0;
  background: var(--navy); color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-label); font-weight: 700; font-size: .85rem;
}
.cat-icon[data-icon="pretreatment"]::before { content: "PT"; }
.cat-icon[data-icon="dyeing"]::before { content: "DY"; }
.cat-icon[data-icon="printing"]::before { content: "PR"; }
.cat-icon[data-icon="finishing"]::before { content: "FN"; }
.cat-title { flex: 1; }
.cat-chevron { width: 10px; height: 10px; border-right: 2px solid var(--silver); border-bottom: 2px solid var(--silver); transform: rotate(45deg); transition: transform .2s ease; }
.category-block[open] .cat-chevron { transform: rotate(-135deg); }

.subcat-list { padding: 0 24px 20px 78px; display: flex; flex-direction: column; gap: 10px; }
.subcat-block { border: 1px solid var(--silver-light); border-radius: var(--radius); background: var(--bg-alt); }
.subcat-block summary {
  list-style: none; cursor: pointer; padding: 14px 18px; font-weight: 500; font-size: .95rem; color: var(--ink);
  display: flex; align-items: center; justify-content: space-between;
}
.subcat-block summary::-webkit-details-marker { display: none; }
.subcat-block summary::after { content: '+'; font-size: 1.1rem; color: var(--silver); }
.subcat-block[open] summary::after { content: '−'; }

.item-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 14px; padding: 6px 18px 18px; }
.item-card {
  background: var(--white); border: 1px solid var(--silver-light); border-radius: var(--radius);
  padding: 12px; text-align: center;
}
.item-img-placeholder {
  aspect-ratio: 1 / 1; background: var(--silver-light); border-radius: 4px; margin-bottom: 10px;
  display: flex; align-items: center; justify-content: center; overflow: hidden;
}
.item-img-placeholder img { width: 100%; height: 100%; object-fit: cover; }
.item-name { font-size: .85rem; color: var(--ink-soft); margin-bottom: 10px; }
.item-inquire { font-size: .8rem; font-weight: 700; color: var(--navy); border-bottom: 1px solid var(--navy); }

/* ---------- News ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 36px; }
.news-card { background: var(--white); border: 1px solid var(--silver-light); border-radius: var(--radius); overflow: hidden; }
.news-img-placeholder { aspect-ratio: 16/10; background: var(--silver-light); }
.news-img-placeholder img { width: 100%; height: 100%; object-fit: cover; }
.news-card h3, .news-card p, .news-card .news-date { padding-left: 20px; padding-right: 20px; }
.news-date { display: block; margin-top: 18px; font-family: var(--font-label); font-size: .78rem; letter-spacing: .06em; color: var(--accent); font-weight: 700; }
.news-card h3 { margin-top: 8px; }
.news-card p { padding-bottom: 20px; font-size: .92rem; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.6fr 1fr; gap: 60px; }
.contact-copy .btn { margin: 18px 0 34px; }
.contact-direct { display: flex; flex-direction: column; gap: 14px; }
.contact-item { display: flex; align-items: center; gap: 14px; font-size: .95rem; }
.contact-item-disabled { opacity: .55; pointer-events: none; }
.contact-icon {
  width: 34px; height: 34px; border-radius: 50%; background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.2);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-label); font-weight: 700; font-size: .75rem; flex-shrink: 0;
}
.contact-icon[data-icon="phone"]::before { content: "TEL"; }
.contact-icon[data-icon="mail"]::before { content: "@"; }
.contact-icon[data-icon="line"]::before { content: "L"; }
.contact-icon[data-icon="whatsapp"]::before { content: "W"; }
.contact-icon[data-icon="wechat"]::before { content: "WC"; }

.contact-map-note { border-left: 1px solid rgba(255,255,255,.15); padding-left: 40px; }
.market-list { display: flex; flex-direction: column; gap: 12px; margin-top: 16px; }
.market-list li { font-family: var(--font-label); font-size: 1.1rem; font-weight: 500; color: var(--white); padding-bottom: 12px; border-bottom: 1px solid rgba(255,255,255,.12); }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-deep); color: var(--silver); padding: 34px 24px; }
.footer-inner { max-width: var(--max-width); margin: 0 auto; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.logo-text-footer { color: var(--white); font-weight: 700; }
.footer-en { font-weight: 400; color: var(--silver); font-size: .85rem; }
.footer-meta { margin: 6px 0 0; font-size: .85rem; color: var(--silver); }
.footer-copyright { margin: 0; font-size: .8rem; color: var(--silver); }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(8,26,46,.55);
  display: flex; align-items: center; justify-content: center; padding: 20px;
  opacity: 0; visibility: hidden; transition: all .2s ease; z-index: 200;
}
.modal-overlay.is-open { opacity: 1; visibility: visible; }
.modal {
  background: var(--white); border-radius: 10px; padding: 36px; max-width: 480px; width: 100%;
  max-height: 90vh; overflow-y: auto; position: relative;
  transform: translateY(12px); transition: transform .2s ease;
}
.modal-overlay.is-open .modal { transform: translateY(0); }
.modal-close {
  position: absolute; top: 16px; right: 16px; background: none; border: none;
  font-size: 1.6rem; line-height: 1; color: var(--silver); padding: 4px;
}
.modal-close:hover { color: var(--navy); }
.modal-sub { font-size: .9rem; }

#inquiryForm label { display: block; margin-bottom: 16px; font-size: .88rem; font-weight: 600; color: var(--ink); }
#inquiryForm input, #inquiryForm textarea {
  width: 100%; margin-top: 6px; padding: 11px 12px; border: 1.5px solid var(--silver-light);
  border-radius: var(--radius); font-family: inherit; font-size: .92rem; color: var(--ink);
}
#inquiryForm input:focus, #inquiryForm textarea:focus { outline: none; border-color: var(--navy); }
.contact-method-group { border: none; padding: 0; margin: 0 0 16px; }
.contact-method-group legend { font-size: .88rem; font-weight: 600; margin-bottom: 8px; }
.radio-row { display: flex; flex-wrap: wrap; gap: 8px; }
.radio-pill {
  display: flex !important; align-items: center; gap: 6px; margin: 0 !important;
  border: 1.5px solid var(--silver-light); border-radius: 20px; padding: 7px 14px;
  font-size: .85rem; font-weight: 500 !important; cursor: pointer;
}
.radio-pill:has(input:checked) { border-color: var(--navy); background: var(--bg-alt); color: var(--navy); }
.form-status { font-size: .85rem; margin-top: 10px; min-height: 1.2em; }
.form-status.success { color: #1D7A46; }
.form-status.error { color: #B23A3A; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .contact-map-note { border-left: none; padding-left: 0; border-top: 1px solid rgba(255,255,255,.15); padding-top: 28px; }
  .news-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .main-nav { position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0; background: var(--white); padding: 24px; transform: translateX(100%); transition: transform .25s ease; overflow-y: auto; }
  .main-nav.is-open { transform: translateX(0); }
  .main-nav > ul { flex-direction: column; gap: 4px; }
  .main-nav > ul > li > a { display: block; padding: 14px 4px; font-size: 1.05rem; border-bottom: 1px solid var(--silver-light); }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; display: none; padding-left: 12px; }
  .has-dropdown.is-open .dropdown { display: block; }
  .header-actions .btn-small { display: none; }
  .menu-toggle { display: flex; }
  .menu-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle.is-open span:nth-child(2) { opacity: 0; }
  .menu-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .section { padding: 64px 20px; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .subcat-list { padding-left: 20px; }
  .process-flow { gap: 14px 0; }
  .process-line { display: none; }
}