/*
Theme Name: WSR Unified v1
Theme URI: https://lsr-moulding.com
Description: World Strong Rubber unified B2B theme (built from 5184 canvas). Self-contained header/footer/menu styles.
Author: World Strong
Version: 1.0.0
Text Domain: wsr-unified
*/

/* ============================================================
   World Strong Rubber — Theme v1
   Industrial Blue + Energy Orange | 1280px | Modern B2B
   ============================================================ */

:root {
  --blue-50:  #EFF6FC;
  --blue-100: #DCEAF7;
  --blue-500: #1E6FB8;   /* primary */
  --blue-600: #1A5E9C;
  --blue-700: #0F4A80;
  --blue-900: #0A3D6E;   /* deep */
  --ink-900:  #14202B;
  --ink-700:  #2B3B4A;
  --ink-500:  #5B6B7A;
  --ink-300:  #9AA8B5;
  --line:     #E3E9F0;
  --bg:       #FFFFFF;
  --bg-soft:  #F7FAFC;
  --accent:   #FF6B35;   /* energy orange */
  --accent-600: #E5521F;
  --success:  #22A06B;
  --radius-sm: 6px;
  --radius:    12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(16,42,67,.06), 0 1px 3px rgba(16,42,67,.08);
  --shadow:    0 6px 20px rgba(16,42,67,.08), 0 2px 6px rgba(16,42,67,.06);
  --shadow-lg: 0 20px 50px rgba(16,42,67,.12), 0 8px 20px rgba(16,42,67,.08);
  --max-w: 1280px;
  --gutter: 32px;
  --font: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --serif: "Poppins", "Inter", var(--font);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink-900);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-500); text-decoration: none; transition: color .2s; }
a:hover { color: var(--blue-700); }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding: 96px 0; }
.section--soft { background: var(--bg-soft); }
.section--blue { background: linear-gradient(180deg, var(--blue-900) 0%, var(--blue-700) 100%); color: #fff; }
.section--blue .section-title, .section--blue .section-sub { color: #fff; }

/* ---------- Typography ---------- */
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.section-title {
  font-family: var(--serif);
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.015em;
  margin: 0 0 14px;
  color: var(--ink-900);
}
.section-sub {
  font-size: 17px;
  color: var(--ink-500);
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-head { text-align: center; margin-bottom: 56px; }
.section-head .section-sub { margin-bottom: 0; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--serif); font-weight: 800; font-size: 18px; color: var(--ink-900);
  letter-spacing: -0.01em;
}
.brand-badge {
  width: 40px; height: 40px; border-radius: 10px;
  background: linear-gradient(135deg, var(--blue-500) 0%, var(--blue-900) 100%);
  color: #fff; display: grid; place-items: center;
  font-weight: 900; font-size: 14px; letter-spacing: .05em;
  box-shadow: var(--shadow-sm);
}
.brand small { display: block; font-size: 11px; font-weight: 600; color: var(--ink-500); letter-spacing: .08em; text-transform: uppercase; }
.main-nav { display: flex; gap: 32px; align-items: center; }
.main-nav a {
  color: var(--ink-700); font-weight: 500; font-size: 15px;
  padding: 8px 0; border-bottom: 2px solid transparent;
  transition: all .2s;
}
.main-nav a:hover { color: var(--blue-500); border-bottom-color: var(--blue-500); }

/* ---------- Dropdown (Products) ---------- */
.nav-item { position: relative; }
.nav-item > a { display: inline-flex; align-items: center; gap: 6px; }
.nav-item > a::after {
  content: ""; width: 6px; height: 6px;
  border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translateY(-2px); transition: transform .2s;
}
.nav-item:hover > a::after { transform: rotate(-135deg) translateY(-1px); }
.dropdown {
  position: absolute; top: calc(100% + 12px); left: 50%; transform: translateX(-50%) translateY(8px);
  min-width: 320px; background: #fff; border-radius: var(--radius);
  box-shadow: var(--shadow-lg); border: 1px solid var(--line);
  padding: 10px; opacity: 0; visibility: hidden; transition: all .2s;
  z-index: 200;
}
.nav-item:hover .dropdown, .nav-item:focus-within .dropdown {
  opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0);
}
.dropdown a {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 11px 12px; border-radius: 8px;
  color: var(--ink-700) !important; border-bottom: 0 !important;
  transition: background .15s;
}
.dropdown a:hover { background: var(--blue-50); color: var(--blue-700) !important; }
.dropdown a .dd-tag {
  flex-shrink: 0; font-size: 10.5px; font-weight: 700; letter-spacing: .1em;
  color: var(--accent); text-transform: uppercase; padding-top: 3px; min-width: 24px;
}
.dropdown a .dd-body { flex: 1; }
.dropdown a .dd-title { display: block; font-weight: 600; font-size: 14px; color: var(--ink-900); }
.dropdown a .dd-sub { display: block; font-size: 12px; color: var(--ink-500); margin-top: 1px; }
.dropdown::before {
  content: ""; position: absolute; top: -6px; left: 50%; transform: translateX(-50%) rotate(45deg);
  width: 12px; height: 12px; background: #fff; border-left: 1px solid var(--line); border-top: 1px solid var(--line);
}
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 8px;
  font-weight: 600; font-size: 15px;
  cursor: pointer; border: 0; transition: all .2s;
  text-decoration: none;
}
.btn--primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 4px 14px rgba(255,107,53,.35);
}
.btn--primary:hover { background: var(--accent-600); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(255,107,53,.45); color: #fff; }
.btn--ghost {
  background: transparent; color: #fff; border: 2px solid rgba(255,255,255,.4);
}
.btn--ghost:hover { background: rgba(255,255,255,.1); border-color: #fff; color: #fff; }
.btn--outline {
  background: #fff; color: var(--blue-500); border: 1.5px solid var(--blue-500);
}
.btn--outline:hover { background: var(--blue-50); color: var(--blue-700); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 78vh;
  display: flex; align-items: center;
  color: #fff;
  overflow: hidden;
  background: var(--blue-900);
}
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  filter: saturate(1.05);
}
.hero-bg::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(10,61,110,.92) 0%, rgba(10,61,110,.78) 40%, rgba(30,111,184,.55) 100%);
}
.hero-inner {
  position: relative; z-index: 2;
  padding: 80px 0;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 13px; font-weight: 700; letter-spacing: .22em; text-transform: uppercase;
  color: #FFE4D6; margin-bottom: 18px;
}
.hero-eyebrow::before {
  content: ""; width: 36px; height: 2px; background: var(--accent); display: inline-block;
}
.hero h1 {
  font-family: var(--serif);
  font-size: clamp(38px, 5.4vw, 62px);
  font-weight: 800; line-height: 1.08; letter-spacing: -0.02em;
  margin: 0 0 20px; max-width: 18ch;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, #FFD8C2 0%, #FF8B5A 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead {
  font-size: 19px; line-height: 1.55; color: rgba(255,255,255,.88);
  max-width: 58ch; margin: 0 0 36px;
}
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  margin-top: 72px;
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
  padding-top: 40px; border-top: 1px solid rgba(255,255,255,.18);
}
.hero-stat .num {
  font-family: var(--serif); font-size: 38px; font-weight: 800; line-height: 1;
  color: #FFD8C2; display: block; margin-bottom: 6px; letter-spacing: -0.02em;
}
.hero-stat .num sup { font-size: 22px; color: var(--accent); margin-left: 2px; }
.hero-stat .label { font-size: 13px; color: rgba(255,255,255,.7); text-transform: uppercase; letter-spacing: .12em; font-weight: 600; }

/* ---------- Product Lines ---------- */
.product-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.product-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: all .3s cubic-bezier(.2,.8,.2,1);
  display: flex; flex-direction: column;
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--blue-100);
}
.product-card__img { aspect-ratio: 4/3; overflow: hidden; background: var(--blue-50); }
.product-card__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.product-card:hover .product-card__img img { transform: scale(1.05); }
.product-card__body { padding: 26px; flex: 1; display: flex; flex-direction: column; }
.product-card__tag {
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .15em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 10px;
}
.product-card__title {
  font-family: var(--serif); font-size: 20px; font-weight: 700; margin: 0 0 10px;
  color: var(--ink-900); letter-spacing: -0.01em;
}
.product-card__desc { font-size: 14.5px; color: var(--ink-500); line-height: 1.6; margin: 0 0 18px; flex: 1; }
.product-card__link {
  font-size: 14px; font-weight: 600; color: var(--blue-500);
  display: inline-flex; align-items: center; gap: 6px;
}
.product-card__link::after { content: "→"; transition: transform .2s; }
.product-card:hover .product-card__link::after { transform: translateX(4px); }

/* ---------- Applications row ---------- */
.app-list {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
  margin-top: 32px;
}
.app-pill {
  display: flex; align-items: center; gap: 12px;
  padding: 16px 20px; border-radius: var(--radius);
  background: #fff; border: 1px solid var(--line);
  font-weight: 500; font-size: 15px; color: var(--ink-700);
  transition: all .2s;
}
.app-pill:hover { border-color: var(--blue-500); color: var(--blue-700); transform: translateY(-2px); box-shadow: var(--shadow); }
.app-pill .dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-500), var(--accent));
  flex-shrink: 0;
}

/* ---------- Split feature (factory) ---------- */
.split {
  display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.split--reverse > .split__media { order: 2; }
.split__media { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.split__media img { width: 100%; height: auto; }
.split__body h2 {
  font-family: var(--serif); font-size: clamp(28px, 3.4vw, 38px);
  font-weight: 700; letter-spacing: -0.015em; margin: 0 0 18px; color: var(--ink-900);
}
.split__body p { color: var(--ink-500); font-size: 16.5px; line-height: 1.7; margin: 0 0 16px; }
.feature-list { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 14px; }
.feature-list li {
  display: flex; gap: 12px; align-items: flex-start;
  font-size: 15px; color: var(--ink-700);
}
.feature-list li::before {
  content: "✓"; flex-shrink: 0;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--blue-50); color: var(--blue-500);
  display: grid; place-items: center;
  font-weight: 700; font-size: 12px;
}

/* ---------- Cert wall ---------- */
.cert-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
}
.cert-card {
  background: #fff; padding: 28px 24px; border-radius: var(--radius);
  border: 1px solid var(--line); text-align: center;
  transition: all .2s;
}
.cert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--blue-100); }
.cert-card__name {
  font-family: var(--serif); font-size: 18px; font-weight: 700; color: var(--blue-700);
  margin: 0 0 6px;
}
.cert-card__desc { font-size: 13px; color: var(--ink-500); margin: 0; }

/* ---------- Cases strip ---------- */
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-card {
  position: relative; border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 4/3; background: var(--blue-50);
}
.case-card img { width: 100%; height: 100%; object-fit: cover; }
.case-card__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10,61,110,.92) 100%);
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: 24px; color: #fff;
  opacity: 0; transition: opacity .3s;
}
.case-card:hover .case-card__overlay { opacity: 1; }
.case-card__overlay h4 { margin: 0 0 4px; font-size: 17px; font-weight: 700; }
.case-card__overlay p { margin: 0; font-size: 13px; opacity: .85; }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: start;
}
.contact-info h3 { font-family: var(--serif); font-size: 24px; margin: 0 0 8px; color: var(--ink-900); }
.contact-info p { color: var(--ink-500); margin: 0 0 24px; }
.contact-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
.contact-list li { display: flex; gap: 14px; align-items: flex-start; font-size: 15px; color: var(--ink-700); }
.contact-list strong { color: var(--ink-900); display: block; font-size: 13px; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 2px; }
.contact-icon {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--blue-50); color: var(--blue-500);
  display: grid; place-items: center; flex-shrink: 0;
}
.contact-form {
  background: #fff; padding: 36px; border-radius: var(--radius-lg);
  border: 1px solid var(--line); box-shadow: var(--shadow);
}
.contact-form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-field { margin-bottom: 14px; }
.form-field label { display: block; font-size: 13px; font-weight: 600; color: var(--ink-700); margin-bottom: 6px; }
.form-field input, .form-field textarea {
  width: 100%; padding: 11px 14px; border-radius: 8px;
  border: 1px solid var(--line); font-family: inherit; font-size: 14.5px;
  transition: border-color .2s;
}
.form-field input:focus, .form-field textarea:focus {
  outline: none; border-color: var(--blue-500); box-shadow: 0 0 0 3px var(--blue-50);
}
.form-field textarea { min-height: 110px; resize: vertical; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink-900); color: rgba(255,255,255,.7);
  padding: 56px 0 28px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px;
  margin-bottom: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-col h4 { color: #fff; font-size: 15px; margin: 0 0 16px; font-weight: 700; }
.footer-col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.footer-col a { color: rgba(255,255,255,.7); font-size: 14px; }
.footer-col a:hover { color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.7; margin: 14px 0 0; max-width: 32ch; }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 13px; color: rgba(255,255,255,.5);
}

/* ---------- Scroll-in animation ---------- */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s ease-out, transform .7s ease-out; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  :root { --gutter: 20px; }
  .section { padding: 64px 0; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .product-grid, .cases-grid { grid-template-columns: repeat(2, 1fr); }
  .app-list, .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .split, .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .split--reverse > .split__media { order: 0; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav { display: none; }
}
@media (max-width: 600px) {
  .product-grid, .cases-grid, .app-list, .cert-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 34px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }
  .contact-form .row { grid-template-columns: 1fr; }
}