/* --- Google Fonts --- */
body {
  font-family: 'Bai Jamjuree', sans-serif;
  font-size: 18px; /* เพิ่มขนาดฟอนต์พื้นฐานเพื่อให้อ่านง่าย */
  line-height: 1.7;
  color: #333;
}

h1, h2, h3, h4, h5, h6, .navbar-brand, .nav-link, .btn, .offcanvas-title {
  font-family: 'Kanit', sans-serif;
  font-weight: 500;
}

/* --- Color & Theme Variables --- */
:root {
  --primary-color: #d50000;
  --primary-light: #ff5131;
  --secondary-color: #ffffff;
  --dark-color: #212529;
  --light-gray: #f8f9fa;
}

/* --- Helper Classes --- */
.btn-primary-gradient {
  background: linear-gradient(45deg, var(--primary-light), var(--primary-color));
  border: none;
  color: var(--secondary-color);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.btn-primary-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(213, 0, 0, 0.3);
  color: var(--secondary-color);
}

.section-title {
  font-weight: 600;
  margin-bottom: 1rem;
}

section {
  padding: 60px 0;
}

@media (max-width: 768px) {
  section {
      padding: 40px 0;
  }
}

/* --- Navbar & Header --- */
.navbar-brand {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color);
}
.nav-link {
  font-size: 1.1rem;
  margin: 0 0.5rem;
  color: #555;
  transition: color 0.2s ease;
}
.nav-link:hover {
  color: var(--primary-color);
}
.header-btn {
  padding: 0.75rem 1.5rem; /* ปุ่มใหญ่ขึ้น */
}


/* --- Mobile Sidebar (Offcanvas) --- */
.offcanvas .nav-link {
  font-size: 1.5rem; /* ทำให้เมนูใน Sidebar ใหญ่และกดง่าย */
  padding: 0.75rem 0.5rem;
}

/* --- Hero Section --- */
#hero {
  background-color: var(--secondary-color);
  background-image: url('hero.jpg');
  background-size: cover;
  background-position: center;
  color: var(--secondary-color);
  min-height: 70vh;
  position: relative;
}
#hero::before { /* เพิ่ม overlay เพื่อให้ตัวหนังสือชัดขึ้น */
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-color: rgba(0,0,0,0.5);
}
#hero .container {
  position: relative;
  z-index: 2;
}
#hero h1 {
  font-size: 3.5rem;
  font-weight: 700;
}
#hero .form-control {
  padding: 1rem; /* ทำให้ช่องค้นหาใหญ่ */
}
#hero .btn {
  padding: 1rem; /* ทำให้ปุ่มค้นหาใหญ่ */
}
@media (max-width: 768px) {
  #hero h1 { font-size: 2.5rem; }
}

/* --- Car Type Section --- */
.car-type-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 1rem;
  border: 1px solid #ddd;
  border-radius: 8px;
  text-decoration: none;
  color: var(--dark-color);
  transition: all 0.3s ease;
}
.car-type-card:hover {
  background-color: var(--primary-color);
  color: var(--secondary-color);
  border-color: var(--primary-color);
  transform: translateY(-5px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}
.car-type-card p {
  margin: 0.5rem 0 0 0;
  font-family: 'Kanit', sans-serif;
  font-weight: 500;
}

/* --- Car Card --- */
.car-card {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 8px rgba(0,0,0,0.05);
  transition: all 0.3s ease;
}
.car-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}
.car-card .card-title {
  font-weight: 600;
}
.car-card .card-price {
  color: var(--primary-color);
  font-weight: 700;
}
.car-card .btn-outline-primary {
  border-color: var(--primary-color);
  color: var(--primary-color);
}
.car-card .btn-outline-primary:hover {
  background-color: var(--primary-color);
  color: var(--secondary-color);
}

/* --- Services Section --- */
.service-card {
  padding: 2rem;
}
.service-card i {
  font-size: 3rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}
.service-card h3 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

/* --- How It Works Section --- */
.step-card {
  padding: 1.5rem;
}
.step-number {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--primary-color);
  color: var(--secondary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-family: 'Kanit', sans-serif;
  margin: 0 auto 1.5rem auto;
  font-weight: 700;
}

/* --- CTA Section --- */
#cta {
  background: linear-gradient(45deg, var(--primary-color), var(--primary-light));
  color: var(--secondary-color);
}
#cta h2 {
  font-weight: 700;
}
#cta .btn-light {
  color: var(--primary-color);
  font-weight: bold;
  padding: 0.75rem 2rem;
}

/* --- Footer --- */
footer {
  background-color: #1a1a1a;
}
.footer-title {
  font-family: 'Kanit', sans-serif;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--secondary-color);
}
.footer-link {
  color: #adb5bd;
  text-decoration: none;
  transition: color 0.2s ease;
}
.footer-link:hover {
  color: var(--secondary-color);
}
.social-icons .social-icon {
  font-size: 1.5rem;
  color: #adb5bd;
  margin-right: 1rem;
  text-decoration: none;
  transition: color 0.2s ease;
}
.social-icons .social-icon:hover {
  color: var(--primary-color);
}