/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Arial', sans-serif;
  scroll-behavior: smooth;
}

/* Header */
header {
  background: #1f2937; /* dark navy */
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
}

header .logo {
  font-weight: bold;
  font-size: 1.3rem;
}

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

nav a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
}

/* Sections */
.section {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 4rem 2rem;
}

.section.dark {
  background: #1f2937; /* dark background */
  color: #fff;
}

.section.light {
  background: #f3f4f6; /* light gray */
  color: #111827; /* dark text */
}

.section.white {
  background: #fff;
  color: #111827;
}

.content h1,
.content h2 {
  margin-bottom: 1rem;
  font-size: 2.5rem;
}

.content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

/* Buttons */
.btn {
  background: #374151; /* slate gray */
  border: none;
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.3s ease, background 0.3s ease;
}

.btn:hover {
  transform: scale(1.05);
  background: #1f2937;
}

/* Gallery */
.gallery {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.gallery img {
  width: 200px;
  height: 150px;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.gallery img:hover {
  transform: scale(1.05);
}

/* Contact Form */
form {
  display: flex;
  flex-direction: column;
  max-width: 400px;
  margin: 0 auto;
  gap: 1rem;
}

form input,
form textarea {
  padding: 0.7rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 1rem;
}

form button {
  background: #374151;
  color: #fff;
  border: none;
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s ease;
}

form button:hover {
  background: #1f2937;
}

/* Footer */
footer {
  background: #1f2937;
  color: #fff;
  text-align: center;
  padding: 1rem;
}

/* Animation (fade-in + slide) */
.animate {
  opacity: 0;
  transform: translateY(40px);
  transition: all 1s ease-out;
}

.animate.show {
  opacity: 1;
  transform: translateY(0);
}