/*
Theme Name: Renke Packaging
Theme URI: https://renkepackaging.com
Author: TRAE
Author URI: https://www.trae.ai/
Description: Flexible packaging manufacturer B2B website for Renke Printing Industry Co., Ltd.
Version: 2.1.0
Requires at least: 5.0
Tested up to: 6.6
Requires PHP: 7.0
License: GPLv2 or later
Text Domain: renke
Tags: custom-logo, custom-menu, featured-images, translation-ready
*/

/* ============================================
   Renke Packaging Theme - Main Stylesheet
   ============================================ */

/* === Design Tokens === */
:root {
  --color-primary: #8C1D1D;
  --color-primary-dark: #6B1414;
  --color-primary-light: #B33A3A;
  --color-accent: #C9A227;
  --color-accent-dark: #A8861E;
  --color-text: #1A1A1A;
  --color-text-muted: #666666;
  --color-bg: #FFFFFF;
  --color-bg-alt: #FAF7F5;
  --color-border: #E8E0DE;

  --font-heading: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-zh: 'PingFang SC', 'Microsoft YaHei', sans-serif;

  --container-max: 1200px;
  --section-padding: 96px 0;
  --section-padding-mobile: 56px 0;
  --radius-card: 10px;
  --radius-btn: 4px;
  --shadow-card: 0 2px 12px rgba(140, 29, 29, 0.06);
  --shadow-hover: 0 8px 30px rgba(140, 29, 29, 0.12);
  --transition: 0.3s ease;
}

/* === Reset === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-primary-dark); }

ul, ol { list-style: none; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p { margin-bottom: 1rem; }

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

.section { padding: var(--section-padding); }
.section-alt { background: var(--color-bg-alt); }
.section-dark { background: var(--color-primary-dark); color: #fff; }

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 56px;
}
.section-header h2 { margin-bottom: 16px; }
.section-header p { color: var(--color-text-muted); font-size: 1.1rem; }
.section-title-line {
  width: 60px; height: 3px;
  background: var(--color-accent);
  margin: 16px auto 0;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-btn);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #fff;
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.6);
}
.btn-outline:hover {
  background: #fff;
  color: var(--color-primary);
  border-color: #fff;
}
.btn-dark {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-dark:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
}
.btn-lg { padding: 16px 40px; font-size: 1rem; }

/* === Header / Navigation === */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 0 var(--color-border);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 118px;
}

.site-logo {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.5px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  max-width: 140px;
  text-align: center;
}
.site-logo span { color: var(--color-accent); }
.site-logo img {
  width: auto;
  height: 92px !important;
  max-height: 92px !important;
  object-fit: contain;
  flex-shrink: 0;
}
.site-logo-text {
  color: var(--color-primary);
  font-size: 0.92rem;
  line-height: 1.1;
  letter-spacing: 0;
  white-space: nowrap;
}

header.site-header > div.container > a.site-logo > span.site-logo-text {
  color: #71000a;
}

.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}
.main-nav a:hover::after, .main-nav a.active::after { width: 100%; }

.nav-cta { margin-left: 16px; }

header.site-header > div.container > nav.main-nav > a.btn {
  color: #fffafa !important;
  border-width: 0 !important;
  border-style: solid !important;
  border-color: #000000 !important;
  box-shadow: 0 4px 12px 0 rgba(113, 0, 10, 0.22) !important;
  opacity: 1 !important;
  width: 142px !important;
  min-width: 142px !important;
  height: 50px !important;
  border-radius: 999px !important;
  justify-content: center;
  padding: 0 28px !important;
  background: #71000a !important;
  text-align: center;
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
}
.lang-switch a {
  padding: 4px 8px;
  border-radius: 3px;
  color: var(--color-text-muted);
  font-weight: 600;
}
.lang-switch a.active { background: var(--color-primary); color: #fff; }

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  width: 26px; height: 3px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: all var(--transition);
}
.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

/* === Hero === */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  margin-top: 118px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img { width: 100%; height: 100%; object-fit: cover; }
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(107,20,20,0.85) 0%, rgba(140,29,29,0.7) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  padding: 80px 0;
  max-width: 680px;
}
.hero h1 { color: #fff; font-size: 3rem; margin-bottom: 20px; }
.hero p { font-size: 1.2rem; color: rgba(255,255,255,0.9); margin-bottom: 32px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* === Trust Bar === */
.trust-bar {
  background: var(--color-bg-alt);
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}
.trust-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}
.trust-item {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  letter-spacing: 1px;
}
.trust-item strong { color: var(--color-primary); }

/* === Image-Text Block === */
.img-text-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 80px;
}
.img-text-block:last-child { margin-bottom: 0; }
.img-text-block.reverse .itt-img { order: 2; }
.img-text-block.reverse .itt-content { order: 1; }

.itt-img {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  aspect-ratio: 3 / 2;
}
.itt-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.itt-img:hover img { transform: scale(1.05); }

.itt-content h3 { margin-bottom: 16px; }
.itt-content p { color: var(--color-text-muted); margin-bottom: 16px; }
.itt-list { margin-top: 16px; }
.itt-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 10px;
  color: var(--color-text);
}
.itt-list li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 16px; height: 16px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
}
.itt-list li::after {
  content: '';
  position: absolute;
  left: 5px; top: 11px;
  width: 6px; height: 3px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg);
}

/* === Stats Counter === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-item .stat-num {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}
.stat-item .stat-label {
  margin-top: 8px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* === Product Grid === */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: #fff;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}
.product-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.product-card-img {
  aspect-ratio: 1;
  overflow: hidden;
}
.product-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.product-card:hover .product-card-img img { transform: scale(1.08); }
.product-card-body { padding: 20px; }
.product-card-body h4 { font-size: 1.05rem; margin-bottom: 6px; }
.product-card-body p { font-size: 0.85rem; color: var(--color-text-muted); margin: 0; }

/* === Process Steps === */
.process-steps {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 24px; left: 10%; right: 10%;
  height: 2px;
  background: var(--color-border);
  z-index: 0;
}
.process-step {
  flex: 1;
  text-align: center;
  position: relative;
  z-index: 1;
}
.process-step-num {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
  margin: 0 auto 16px;
  border: 4px solid var(--color-bg);
}
.process-step h4 { font-size: 1rem; margin-bottom: 6px; }
.process-step p { font-size: 0.85rem; color: var(--color-text-muted); }

/* === CTA Section === */
.cta-section {
  background: var(--color-primary);
  color: #fff;
  text-align: center;
  padding: var(--section-padding);
}
.cta-section h2 { color: #fff; margin-bottom: 16px; }
.cta-section p { color: rgba(255,255,255,0.85); font-size: 1.1rem; margin-bottom: 32px; }

/* === Page Banner === */
.page-banner {
  margin-top: 118px;
  background: var(--color-primary-dark);
  color: #fff;
  padding: 64px 0;
  text-align: center;
}
.page-banner h1 { color: #fff; }
.page-banner .breadcrumb {
  margin-top: 12px;
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
}
.page-banner .breadcrumb a { color: var(--color-accent); }

/* === About Page === */
.timeline { position: relative; padding-left: 32px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 8px; top: 0; bottom: 0;
  width: 2px;
  background: var(--color-border);
}
.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -28px; top: 4px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-bg);
}
.timeline-year { font-weight: 700; color: var(--color-primary); font-size: 1.1rem; }

.cert-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}
.cert-item {
  aspect-ratio: 1;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--color-primary);
  text-align: center;
  padding: 8px;
}

/* === Solutions === */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.solution-card {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
}
.solution-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.solution-card-img { aspect-ratio: 3/2; overflow: hidden; }
.solution-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.solution-card:hover .solution-card-img img { transform: scale(1.08); }
.solution-card-body { padding: 20px; background: #fff; }
.solution-card-body h4 { margin-bottom: 8px; }
.solution-card-body p { font-size: 0.9rem; color: var(--color-text-muted); margin: 0; }

/* === OEM/ODM === */
.custom-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.option-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius-card);
  padding: 32px 24px;
  text-align: center;
}
.option-card h4 { color: var(--color-primary); margin-bottom: 12px; }
.option-card p { font-size: 0.9rem; color: var(--color-text-muted); margin: 0; }

/* === Contact Form === */
.contact-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  background: #fff;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.contact-info-card {
  background: var(--color-bg-alt);
  border-radius: var(--radius-card);
  padding: 32px;
}
.contact-info-card h3 { margin-bottom: 24px; }
.contact-info-item {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
}
.contact-info-item .ci-icon {
  width: 40px; height: 40px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
  font-size: 1.1rem;
}
.contact-info-item .ci-label { font-size: 0.8rem; color: var(--color-text-muted); }
.contact-info-item .ci-value { font-weight: 600; }

/* === News === */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all var(--transition);
  background: #fff;
}
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.news-card-img { aspect-ratio: 4/3; overflow: hidden; }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.news-card:hover .news-card-img img { transform: scale(1.08); }
.news-card-body { padding: 20px; }
.news-date { font-size: 0.8rem; color: var(--color-accent); font-weight: 600; margin-bottom: 8px; }
.news-card-body h4 { margin-bottom: 8px; font-size: 1.05rem; }
.news-card-body p { font-size: 0.9rem; color: var(--color-text-muted); margin: 0; }

/* === Product Detail === */
.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.product-gallery-main {
  aspect-ratio: 1;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  margin-bottom: 16px;
}
.product-gallery-main img { width: 100%; height: 100%; object-fit: cover; }
.product-gallery-thumbs { display: flex; gap: 12px; }
.gallery-thumb {
  width: 80px; height: 80px;
  border-radius: var(--radius-btn);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color var(--transition);
}
.gallery-thumb.active { border-color: var(--color-primary); }
.gallery-thumb img { width: 100%; height: 100%; object-fit: cover; }

.product-info h1 { margin-bottom: 12px; }
.product-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}
.product-meta-item { font-size: 0.9rem; }
.product-meta-item span { color: var(--color-text-muted); }
.spec-table { width: 100%; margin-bottom: 24px; }
.spec-table th, .spec-table td {
  padding: 10px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}
.spec-table th { background: var(--color-bg-alt); font-weight: 600; }

/* === Pagination === */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
}
.pagination a, .pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  border-radius: var(--radius-btn);
  border: 1px solid var(--color-border);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text);
  transition: all var(--transition);
}
.pagination a:hover, .pagination .current {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* === Footer === */
.site-footer {
  background: #fff !important;
  background-color: #fff !important;
  color: #000 !important;
  padding: 64px 0 0;
  border-top: 1px solid var(--color-border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 48px;
}
.site-footer,
.site-footer p,
.site-footer h4,
.site-footer li,
.site-footer div,
.site-footer span {
  color: #000 !important;
}
.footer-col h4 { color: #000 !important; margin-bottom: 20px; font-size: 1rem; }
.footer-col p { font-size: 0.9rem; color: #000 !important; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: #000 !important; font-size: 0.9rem; }
.footer-col ul li a:hover { color: #000 !important; text-decoration: underline; }
.footer-logo { font-size: 1.3rem; font-weight: 800; color: #000 !important; margin-bottom: 16px; }
.footer-logo span { color: #000 !important; }
.footer-logo img {
  width: auto;
  height: 82px !important;
  max-height: 82px !important;
  margin-bottom: 12px;
  object-fit: contain;
}

footer.site-footer > div.container > div.footer-col:nth-child(1) > div.footer-logo > img {
  width: auto !important;
  height: 82px !important;
  max-height: 82px !important;
}
.footer-social { display: flex; gap: 10px; margin-top: 16px; }
.footer-social a {
  width: 38px; height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  text-decoration: none !important;
}
.footer-social a svg { transition: fill var(--transition); }
.footer-social a.social-linkedin { background: #0A66C2; }
.footer-social a.social-linkedin svg { fill: #fff; }
.footer-social a.social-linkedin:hover { background: #004182; }
.footer-social a.social-facebook { background: #1877F2; }
.footer-social a.social-facebook svg { fill: #fff; }
.footer-social a.social-facebook:hover { background: #0b5cc4; }
.footer-social a.social-tiktok { background: #000; }
.footer-social a.social-tiktok svg { fill: #fff; }
.footer-social a.social-tiktok:hover { background: #25F4EE; }
.footer-social a.social-tiktok:hover svg { fill: #000; }
.footer-social a.social-whatsapp { background: #25D366; }
.footer-social a.social-whatsapp svg { fill: #fff; }
.footer-social a.social-whatsapp:hover { background: #128C7E; }
.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 24px 0;
  text-align: center;
  font-size: 0.85rem;
  color: #000;
}

/* === 404 === */
.error-404 {
  text-align: center;
  padding: 120px 0;
  margin-top: 118px;
}
.error-404 h1 { font-size: 6rem; color: var(--color-primary); }
.error-404 p { font-size: 1.2rem; color: var(--color-text-muted); margin-bottom: 32px; }

/* === Animations === */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.img-lazy {
  opacity: 0;
  transition: opacity 0.5s ease;
}
.img-lazy.loaded { opacity: 1; }

/* === Responsive === */
@media (max-width: 1023px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.7rem; }
  .section { padding: var(--section-padding-mobile); }

  .main-nav {
    position: fixed;
    top: 118px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
  }
  .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .menu-toggle { display: flex; }

  .img-text-block { grid-template-columns: 1fr; gap: 32px; }
  .img-text-block.reverse .itt-img { order: 0; }
  .img-text-block.reverse .itt-content { order: 0; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .custom-options { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .product-detail-layout { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .process-steps { flex-wrap: wrap; justify-content: center; }
  .process-steps::before { display: none; }
  .process-step { flex: 0 0 40%; }
}

@media (max-width: 600px) {
  .container { padding: 0 16px; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item .stat-num { font-size: 2rem; }
  .product-grid { grid-template-columns: 1fr; }
  .solutions-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .trust-bar-inner { gap: 16px; }
}

/* === Floating WhatsApp Button === */
.floating-whatsapp {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 1200;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 18px;
  border-radius: 999px;
  background: #25D366;
  color: #fff !important;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 800;
  line-height: 1;
  box-shadow: 0 10px 28px rgba(37, 211, 102, 0.36);
  text-decoration: none !important;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}
.floating-whatsapp svg {
  flex: 0 0 auto;
  fill: #fff;
}
.floating-whatsapp:hover {
  background: #128C7E;
  color: #fff !important;
  transform: translateY(-3px);
  box-shadow: 0 14px 34px rgba(18, 140, 126, 0.38);
}
@media (max-width: 640px) {
  .floating-whatsapp {
    right: 16px;
    bottom: 16px;
    width: 54px;
    min-width: 54px;
    padding: 0;
    justify-content: center;
  }
  .floating-whatsapp span {
    display: none;
  }
}