@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;600;700&display=swap');

:root {
  --bg-color: #0a0a0a;
  --bg-alt: #131313;
  --text-color: #f5f5f5;
  --primary-color: #eab308; /* gold accent */
  --accent-color: #2563eb; /* blue accent */
  --card-bg: #1c1c1c;
}

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

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

header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(10,10,10,0.8);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  z-index: 1000;
}

.logo a {
  color: var(--primary-color);
  font-size: 1.5rem;
  font-weight: 700;
  text-decoration: none;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

nav a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}

nav a:hover {
  color: var(--primary-color);
}

.language-switcher {
  display: flex;
  gap: 0.5rem;
}

.language-switcher a {
  color: var(--bg-color);
  background-color: var(--primary-color);
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.3s ease;
}

.language-switcher a:hover {
  background-color: var(--accent-color);
}

.hero {
  background: url('../img/hero-bg.png') no-repeat center center/cover;
  height: 80vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  color: #fff;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  text-shadow: 0 2px 4px rgba(0,0,0,0.6);
}

.hero p {
  font-size: 1.2rem;
  max-width: 800px;
  margin-bottom: 2rem;
  text-shadow: 0 2px 4px rgba(0,0,0,0.6);
}

.cta-button {
  background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
  padding: 0.75rem 1.5rem;
  color: #0a0a0a;
  border-radius: 4px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.3s ease;
}

.cta-button:hover {
  transform: scale(1.05);
}

.section {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.section p {
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
  max-width: 1000px;
}

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.feature-item {
  background-color: var(--card-bg);
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.5);
}

.feature-item h3 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.services-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.service-item {
  background-color: var(--card-bg);
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.5);
}

.service-item h3 {
  color: var(--primary-color);
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.project-item {
  background-color: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(0,0,0,0.5);
}

.project-item img {
  width: 100%;
  display: block;
}

.project-item h3 {
  padding: 1rem;
  color: var(--primary-color);
  font-size: 1.3rem;
}

.project-item p {
  padding: 0 1rem 1rem;
  font-size: 1rem;
}

form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 600px;
}

form input, form textarea {
  padding: 0.75rem;
  background-color: var(--bg-alt);
  border: none;
  border-radius: 4px;
  color: var(--text-color);
}

form input:focus, form textarea:focus {
  outline: 2px solid var(--primary-color);
}

form button {
  align-self: flex-start;
  background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
  color: #0a0a0a;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 4px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.3s ease;
}

form button:hover {
  transform: scale(1.05);
}

footer {
  background-color: #020202;
  color: #888;
  text-align: center;
  padding: 2rem 1rem;
  margin-top: 3rem;
}

footer p {
  margin-bottom: 0.5rem;
}

/* Language classes */
.lang-en { display: block; }
.lang-th { display: none; }

body.thai .lang-en { display: none; }
body.thai .lang-th { display: block; }

@media (max-width: 768px) {
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  nav ul { flex-direction: column; gap: 1rem; }
  nav { background-color: rgba(10,10,10,0.9); padding: 1rem; border-radius: 8px; }
  .language-switcher { margin-top: 0.5rem; }
}