/* Industrial B2B Theme for Concrete Plant Equipment */
:root {
  --primary: #e63946;
  --primary-dark: #c1121f;
  --secondary: #1d3557;
  --accent: #457b9d;
  --light-bg: #f1faee;
  --dark: #1d1d1d;
  --gray: #6c757d;
  --light-gray: #e9ecef;
  --white: #ffffff;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 40px rgba(0,0,0,0.12);
  --radius: 8px;
  --max-width: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--dark);
  background: var(--white);
}

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }

a { color: var(--secondary); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--primary); }

h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }
h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.3rem; }

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

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--white);
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  z-index: 1000;
  height: 70px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.logo { display: flex; align-items: center; gap: 8px; font-size: 1.2rem; font-weight: 700; color: var(--secondary); }
.logo:hover { color: var(--secondary); }
.logo-icon { font-size: 1.6rem; }

.main-nav ul { display: flex; align-items: center; gap: 28px; list-style: none; }
.main-nav a { font-size: 0.9rem; font-weight: 500; color: var(--dark); padding: 4px 0; position: relative; }
.main-nav a.active { color: var(--primary); }
.main-nav a.active::after { content: ''; position: absolute; bottom: -2px; left: 0; right: 0; height: 2px; background: var(--primary); }

.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.mobile-nav-toggle span { display: block; width: 24px; height: 2px; background: var(--dark); border-radius: 2px; transition: 0.3s; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 24px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.25s;
  text-align: center;
}
.btn-lg { padding: 14px 36px; font-size: 1rem; }
.btn-primary { background: var(--primary); color: var(--white); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: var(--white); }
.btn-outline { background: transparent; color: var(--white); border-color: var(--white); }
.btn-outline:hover { background: var(--white); color: var(--secondary); }
.btn-secondary { background: var(--secondary); color: var(--white); border-color: var(--secondary); }
.btn-secondary:hover { background: #15263e; color: var(--white); }

/* Hero */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--secondary) 0%, #0d1b2a 100%);
  color: var(--white);
  text-align: center;
}
.hero h1 { font-size: 2.8rem; margin-bottom: 20px; }
.hero .highlight { color: var(--primary); }
.hero-subtitle { font-size: 1.15rem; color: rgba(255,255,255,0.85); max-width: 650px; margin: 0 auto 36px; line-height: 1.6; }
.hero-cta { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Stats */
.stats {
  background: var(--white);
  border-bottom: 1px solid var(--light-gray);
}
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); padding: 40px 0; text-align: center; }
.stat-number { display: block; font-size: 2rem; font-weight: 800; color: var(--primary); }
.stat-label { font-size: 0.9rem; color: var(--gray); margin-top: 4px; display: block; }

/* Sections */
.section { padding: 80px 0; }
.bg-light { background: var(--light-bg); }
.section-title { text-align: center; margin-bottom: 12px; font-size: 2rem; }
.section-subtitle { text-align: center; color: var(--gray); max-width: 600px; margin: 0 auto 50px; font-size: 1.05rem; }
.text-center { text-align: center; }
.mt-2 { margin-top: 40px; }

/* Product Grid */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.product-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s;
  border: 1px solid var(--light-gray);
  display: flex;
  flex-direction: column;
  padding: 24px;
  color: var(--dark);
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); color: var(--dark); }
.product-card-img { height: 160px; background: var(--light-bg); border-radius: var(--radius); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.placeholder-img { font-size: 2.5rem; color: var(--gray); }
.product-card h3 { font-size: 1.2rem; margin-bottom: 6px; }
.product-card p { font-size: 0.85rem; color: var(--gray); flex: 1; }
.product-card-specs { display: flex; gap: 12px; margin: 12px 0; font-size: 0.8rem; color: var(--accent); font-weight: 500; }
.card-cta { font-weight: 600; color: var(--primary); font-size: 0.85rem; margin-top: 8px; }

/* Features Grid */
.features-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
.feature-card {
  background: var(--white);
  padding: 32px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--light-gray);
  transition: all 0.3s;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.feature-icon { font-size: 2rem; margin-bottom: 12px; }
.feature-card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.feature-card p { font-size: 0.9rem; color: var(--gray); }

/* Cases Grid */
.cases-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 24px; }
.case-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--light-gray);
  transition: all 0.3s;
  color: var(--dark);
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); color: var(--dark); }
.case-card-img { height: 200px; background: var(--light-bg); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: var(--gray); }
.case-card-body { padding: 20px; }
.case-tag { display: inline-block; background: var(--accent); color: var(--white); padding: 2px 10px; border-radius: 4px; font-size: 0.75rem; font-weight: 600; margin-bottom: 8px; }
.case-card-body h3 { font-size: 1.05rem; margin-bottom: 6px; }
.case-card-body p { font-size: 0.85rem; color: var(--gray); }

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--white);
  text-align: center;
  padding: 80px 0;
}
.cta-section h2 { font-size: 2rem; margin-bottom: 12px; }
.cta-section p { font-size: 1.1rem; margin-bottom: 30px; opacity: 0.9; }

/* Footer */
.site-footer {
  background: var(--secondary);
  color: rgba(255,255,255,0.85);
  padding: 60px 0 0;
}
.footer-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 40px; margin-bottom: 40px; }
.footer-col h4 { color: var(--white); margin-bottom: 16px; font-size: 1rem; }
.footer-col p, .footer-col li { font-size: 0.85rem; margin-bottom: 8px; }
.footer-col a { color: rgba(255,255,255,0.75); }
.footer-col a:hover { color: var(--white); }
.footer-col ul { list-style: none; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.15); padding: 20px 0; text-align: center; font-size: 0.8rem; color: rgba(255,255,255,0.5); }

/* Product Detail */
.product-detail { padding: 120px 0 60px; }
.product-detail h1 { margin-bottom: 8px; }
.product-detail .product-subtitle { font-size: 1.1rem; color: var(--gray); margin-bottom: 24px; }
.specs-table { width: 100%; border-collapse: collapse; margin: 20px 0; }
.specs-table th, .specs-table td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--light-gray); font-size: 0.9rem; }
.specs-table th { background: var(--light-bg); font-weight: 600; width: 40%; }

/* Contact Form */
.contact-section { padding: 120px 0 60px; }
.contact-form { max-width: 600px; margin: 0 auto; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 500; margin-bottom: 6px; font-size: 0.9rem; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 16px; border: 1px solid var(--light-gray); border-radius: var(--radius);
  font-family: inherit; font-size: 0.95rem; transition: border-color 0.2s;
}
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); }
.form-group textarea { min-height: 120px; resize: vertical; }

/* About Page */
.about-section { padding: 120px 0 60px; }
.about-content { max-width: 800px; margin: 0 auto; }
.about-content p { margin-bottom: 16px; }

/* Blog */
.blog-section { padding: 120px 0 60px; }
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 24px; }
.blog-card {
  background: var(--white); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); border: 1px solid var(--light-gray); transition: all 0.3s;
  color: var(--dark);
}
.blog-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); color: var(--dark); }
.blog-card-img { height: 180px; background: var(--light-bg); display: flex; align-items: center; justify-content: center; }
.blog-card-body { padding: 20px; }
.blog-card-date { font-size: 0.8rem; color: var(--gray); }
.blog-card-body h3 { font-size: 1.05rem; margin: 8px 0; }
.blog-card-body p { font-size: 0.85rem; color: var(--gray); }

/* Single content */
.single-content { padding: 120px 0 60px; }
.single-content .content { max-width: 780px; margin: 0 auto; }
.single-content .content h2 { margin-top: 32px; margin-bottom: 12px; }
.single-content .content p, .single-content .content li { margin-bottom: 12px; color: var(--gray); }
.single-content .content ul, .single-content .content ol { padding-left: 24px; margin-bottom: 16px; }

/* Solutions Page */
.solutions-section { padding: 120px 0 60px; }
.solution-block { margin-bottom: 48px; }
.solution-block h2 { margin-bottom: 8px; }
.solution-block p { color: var(--gray); max-width: 700px; }

/* Mobile */
@media (max-width: 768px) {
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.5rem; }

  .hero { padding: 100px 0 50px; }
  .hero h1 { font-size: 1.8rem; }
  .hero-cta { flex-direction: column; align-items: center; }
  .hide-mobile { display: none; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }

  .mobile-nav-toggle { display: flex; }
  .main-nav {
    position: fixed; top: 70px; left: 0; right: 0; background: var(--white);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    max-height: 0; overflow: hidden; transition: max-height 0.3s;
  }
  .main-nav.open { max-height: 400px; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 16px 24px; }
  .main-nav li { width: 100%; }
  .main-nav a { display: block; padding: 12px 0; border-bottom: 1px solid var(--light-gray); }
  .nav-cta { margin-top: 12px; text-align: center; }

  .product-grid, .features-grid, .cases-grid, .blog-grid, .footer-grid { grid-template-columns: 1fr; }

  .footer-grid { gap: 24px; }

  .section { padding: 50px 0; }
  .cta-section { padding: 50px 0; }
}