:root {
  --bg: #f8f7f2;
  --surface: #ffffff;
  --primary: #1a5d7a;
  --primary-soft: #4f8ca8;
  --text: #1f2b3a;
  --muted: #5b6d81;
  --border: #e1e5ea;
  --shadow: rgba(40, 63, 98, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Kanit', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

.container {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner,
.footer-inner,
.booking-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 0;
}

.brand h1 {
  margin: 0;
  font-size: clamp(1.5rem, 2vw, 2rem);
}

.brand p {
  margin: 0.4rem 0 0;
  color: var(--muted);
}

.site-nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 600;
}

.hero {
  background: linear-gradient(135deg, #1a5d7a 0%, #4f8ca8 100%);
  color: #ffffff;
  padding: 4rem 0 5rem;
}

.hero-content {
  text-align: center;
  max-width: 780px;
  margin: 0 auto;
}

.hero h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin: 0 0 1rem;
}

.hero p {
  margin: 0 0 2rem;
  color: rgba(255, 255, 255, 0.9);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 1.5rem;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-decoration: none;
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: #ffd166;
  color: #1f2b3a;
}

.button-secondary {
  background: var(--primary);
  color: #ffffff;
}

.section {
  padding: 4rem 0;
}

.section h3 {
  font-size: clamp(1.75rem, 2.5vw, 2.25rem);
  margin-bottom: 1.25rem;
}

.services .cards,
.fleet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.card,
.fleet-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 1.75rem;
  box-shadow: 0 18px 45px -30px var(--shadow);
}

.card h4,
.fleet-item h4 {
  margin-top: 0;
}

.booking-inner {
  align-items: flex-start;
  gap: 3rem;
}

.booking-text {
  max-width: 420px;
}

.booking-form {
  width: 100%;
  display: grid;
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 1.75rem;
  box-shadow: 0 18px 45px -30px var(--shadow);
}

.booking-form label {
  font-weight: 600;
}

.booking-form input,
.booking-form textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #f7f8fb;
  color: var(--text);
}

.booking-form textarea {
  resize: vertical;
}

.form-status {
  margin: 0;
  min-height: 1.5rem;
  color: var(--text);
}

.contact p {
  margin: 0.6rem 0;
}

.site-footer {
  background: #162b3b;
  color: #d7e4f2;
  padding: 1.5rem 0;
}

.site-footer p {
  margin: 0.4rem 0;
}

.site-footer a {
  color: #f7f9ff;
  text-decoration: underline;
}

@media (max-width: 900px) {
  .header-inner,
  .footer-inner,
  .booking-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero {
    padding-top: 3rem;
  }
}

@media (max-width: 640px) {
  .site-nav {
    width: 100%;
    justify-content: space-between;
  }

  .hero h2 {
    font-size: 2rem;
  }
}