:root {
  --primary: #f7b000;
  --secondary: #0c2f57;
  --dark: #0a1b2c;
  --muted: #6c7a89;
}

* {
  font-family: "Kanit", system-ui, sans-serif;
}

body {
  color: #0a1b2c;
  background: #f7f8fb;
  scroll-behavior: smooth;
}

a {
  text-decoration: none;
}

.navbar {
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.navbar.sticky {
  background: rgba(10, 27, 44, 0.92);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.18);
}

.navbar-brand span {
  color: var(--primary);
}

.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #0a1b2c;
  font-weight: 600;
}

.btn-primary:hover {
  background: #ffc94c;
  border-color: #ffc94c;
  color: #0a1b2c;
}

.btn-outline-light:hover {
  color: var(--secondary);
  background: #fff;
  border-color: #fff;
}

.hero {
  position: relative;
  min-height: 90vh;
  color: #fff;
}

.hero .carousel-item {
  min-height: 90vh;
}

.hero .carousel-item img {
  height: 90vh;
  object-fit: cover;
  filter: brightness(72%);
}

.hero-content {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 1.5rem;
}

.section-title {
  font-weight: 700;
  color: var(--secondary);
  letter-spacing: 0.4px;
}

.accent-bar {
  width: 64px;
  height: 4px;
  background: var(--primary);
  border-radius: 999px;
  margin: 0.75rem auto 1.5rem;
}

.card {
  border: none;
  border-radius: 16px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
}

.card img {
  border-top-left-radius: 16px;
  border-top-right-radius: 16px;
}

.icon-badge {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(247, 176, 0, 0.16);
  color: var(--secondary);
  border-radius: 12px;
}

.bg-soft {
  background: radial-gradient(circle at 20% 20%, rgba(247, 176, 0, 0.12), transparent 32%), #fff;
}

.project-grid img {
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.project-grid img:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.project-item {
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.project-item.filter-hide {
  opacity: 0;
  transform: scale(0.98);
}

.filter-chip.active {
  background: var(--primary);
  color: #0a1b2c;
  border-color: var(--primary);
}

.faq details {
  border: 1px solid #e6e9ee;
  border-radius: 12px;
  padding: 1rem 1.25rem;
  background: #fff;
}

.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--secondary);
}

.faq details[open] {
  border-color: var(--primary);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
}

.contact-card {
  background: var(--secondary);
  color: #fff;
  border-radius: 16px;
  padding: 1.5rem;
}

.contact-card a {
  color: #fff;
}

.map-embed {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

footer {
  background: var(--dark);
  color: #dbe2f0;
  padding: 1.5rem 0;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.skip-link:focus {
  position: static;
  width: auto;
  height: auto;
  padding: 0.75rem 1rem;
  background: #fff;
  z-index: 1050;
}

@media (max-width: 767px) {
  .hero .carousel-item img {
    height: 75vh;
  }

  .hero {
    min-height: 75vh;
  }

  .hero .carousel-item {
    min-height: 75vh;
  }

  .navbar-nav .nav-link {
    padding: 0.6rem 0;
  }
}