:root {
  --primary: #002244;
  --accent: #0052a5;
  --background: #f5f7fa;
  --white: #ffffff;
  --text: #333333;
  --radius: 8px;
  --spacing: 16px;
  --transition: 0.3s ease;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: 'Lato', sans-serif;
  color: var(--text);
  background: var(--background);
  scroll-behavior: smooth;
}
.container {
  width: 90%; max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing) 0;
}
a { color: var(--primary); text-decoration: none; }

/* Header */
.header {
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
  position: fixed;
  width: 100%; top: 0; left: 0;
  z-index: 1000;
}
.header__inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--spacing) 0;
}
.logo {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.5rem;
  color: var(--primary);
}
.logo span { color: var(--accent); }
.nav__list {
  list-style: none;
  display: flex;
  gap: var(--spacing);
}
.nav__list a {
  font-weight: 500;
  transition: color var(--transition);
}
.nav__list a:hover { color: var(--accent); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  display: block;
}

/* Responsive Nav */
@media (max-width: 768px) {
  .nav__list {
    position: absolute;
    top: 100%; right: 0;
    background: var(--white);
    flex-direction: column;
    width: 200px;
    display: none;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  }
  .nav__list.open { display: flex; }
  .nav-toggle { display: flex; }
}

/* Hero */
.hero {
  position: relative;
  height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.hero__bg {
  position: absolute; top:0; left:0;
  width:100%; height:100%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  background-size: 200% 200%;
  animation: bgAnim 8s infinite alternate;
  z-index: -1;
}
@keyframes bgAnim {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}
.hero__content h1 { font-size: 2.5rem; color: var(--white); }
.hero__content p { color: var(--white); margin: var(--spacing) 0; }
.btn {
  background: var(--white);
  color: var(--primary);
  padding: 12px 24px;
  border-radius: var(--radius);
  transition: transform var(--transition);
}
.btn:hover { transform: scale(1.05); }

/* Sections */
.section {
  padding: calc(var(--spacing) * 2) 0;
  opacity: 0;
  transform: translateY(20px);
  transition: all var(--transition);
}
.section.visible {
  opacity: 1;
  transform: none;
}
.section--card .container {
  background: var(--white);
  padding: calc(var(--spacing) * 2);
  border-radius: var(--radius);
  box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}
.section h2 {
  font-family: 'Montserrat', sans-serif;
  margin-bottom: var(--spacing);
  color: var(--primary);
  border-bottom: 3px solid var(--primary);
  display: inline-block;
}

/* About */
.about__list {
  margin-top: var(--spacing);
  list-style: disc inside;
}

/* Services */
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px,1fr));
  gap: var(--spacing);
  margin-top: var(--spacing);
}
.service__card {
  background: var(--background);
  padding: var(--spacing);
  border-radius: var(--radius);
  transition: transform var(--transition);
}
.service__card:hover { transform: translateY(-5px); }

/* Process */
.process__list {
  margin-top: var(--spacing);
  list-style: none;
  counter-reset: step;
  padding-left: 0;
}
.process__list li {
  position: relative;
  padding-left: 2.5rem;
  margin-bottom: var(--spacing);
}
.process__list li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 2rem;
  height: 2rem;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Gallery Slider */
.slider {
  position: relative;
  overflow: hidden;
  margin-top: var(--spacing);
}
.slides {
  display: flex;
  transition: transform var(--transition);
}
.slide {
  min-width: 100%;
  display: flex;
  justify-content: center;
}
.slide img {
  max-height: 400px;
  width: auto;
  border-radius: var(--radius);
}
.prev, .next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.8);
  border: none;
  padding: 8px;
  cursor: pointer;
  border-radius: 50%;
  transition: background var(--transition);
}
.prev:hover, .next:hover { background: rgba(255,255,255,1); }
.prev { left: var(--spacing); }
.next { right: var(--spacing); }

/* Footer */
.footer {
  background: var(--white);
  text-align: center;
  padding: var(--spacing) 0;
  margin-top: var(--spacing);
}

@media (max-width: 768px) {
  .hero__content h1 { font-size: 2rem; }
  .services__grid { grid-template-columns: 1fr; }
}