/* Asia Pioneer Engineering Limited - Company Website */
:root {
  --primary: #1a365d;
  --primary-dark: #0f2744;
  --accent: #e85d04;
  --accent-light: #f48c06;
  --text: #2d3748;
  --text-light: #4a5568;
  --bg: #f7fafc;
  --white: #ffffff;
  --border: #e2e8f0;
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

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

a:hover {
  color: var(--accent-light);
}

/* Header & Navigation */
.header {
  background: var(--white);
  box-shadow: var(--shadow);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
}

.logo-img {
  height: 64px;
  width: auto;
  object-fit: contain;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent), #dc2f02);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 1.2rem;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: var(--text);
  font-weight: 500;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--primary);
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 5rem 1.5rem 4rem;
  text-align: center;
}

.hero-content {
  max-width: 900px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 2.8rem;
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.hero .chinese {
  font-size: 1.6rem;
  opacity: 0.9;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto 2rem;
  opacity: 0.95;
}

.btn {
  display: inline-block;
  background: var(--accent);
  color: white;
  padding: 0.85rem 1.8rem;
  border-radius: 6px;
  font-weight: 600;
  transition: background 0.2s, transform 0.2s;
}

.btn:hover {
  background: var(--accent-light);
  color: white;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 2px solid white;
  margin-left: 1rem;
}

.btn-outline:hover {
  background: white;
  color: var(--primary);
}

/* Sections */
.section {
  padding: 4rem 1.5rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-title h2 {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.section-title p {
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

/* Featured / main project - taller on desktop */
.card[style*="max-width:900px"] img,
.featured-project img {
  height: 420px;
}

@media (max-width: 768px) {
  .card img {
    height: 200px;
  }
  .card[style*="max-width:900px"] img,
  .featured-project img {
    height: 220px;
  }
}

.card-content {
  padding: 1.25rem;
}

.card h3 {
  color: var(--primary);
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
}

.card p {
  color: var(--text-light);
  font-size: 0.95rem;
}

.badge {
  display: inline-block;
  background: #edf2f7;
  color: var(--primary);
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* About content */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text h3 {
  color: var(--primary);
  margin: 1.5rem 0 0.5rem;
}

.cert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.cert-badge {
  background: var(--primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
}

/* Team */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.team-card {
  background: var(--white);
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.team-card h4 {
  color: var(--primary);
  margin-bottom: 0.25rem;
}

.team-card .role {
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.contact-info h3 {
  color: var(--primary);
  margin-bottom: 1rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.25rem;
  align-items: flex-start;
}

.contact-item .icon {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: white;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Footer */
.footer {
  background: var(--primary-dark);
  color: white;
  padding: 3rem 1.5rem 1.5rem;
  margin-top: 2rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
}

.footer h4 {
  margin-bottom: 1rem;
  font-size: 1.1rem;
}

.footer p, .footer a {
  color: #cbd5e0;
  font-size: 0.9rem;
}

.footer a:hover {
  color: white;
}

.footer-bottom {
  max-width: 1200px;
  margin: 2rem auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 0.85rem;
  color: #a0aec0;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow);
  }
  .nav-links.active {
    display: flex;
  }
  .mobile-menu-btn {
    display: block;
  }
  .hero h1 {
    font-size: 2rem;
  }
  .about-grid,
  .contact-grid,
  .footer-content {
    grid-template-columns: 1fr;
  }
  .btn-outline {
    margin-left: 0;
    margin-top: 0.75rem;
    display: inline-block;
  }
}