body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  background: #f7f9fa;
}

body.no-scroll {
  overflow: hidden;
  height: 100vh;
}

.site-header {
  background: #fff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1800px;
  margin: 0 auto;
  padding: 0.5rem 1rem;
  box-sizing: border-box;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding-left: 1rem;
}

.logo img {
  height: 60px;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.menu-toggle span {
  display: block;
  width: 28px;
  height: 4px;
  background: #111;
  margin: 4px 0;
  border-radius: 2px;
  transition: all 0.3s;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.2rem;
}

.main-nav a {
  color: #111;
  text-decoration: none;
  font-size: clamp(0.9rem, 1.1vw, 1.7rem);
  text-transform: uppercase;
  font-weight: bold;
  letter-spacing: 1px;
  padding: 0.5rem 1.2rem;
  border-radius: 25px;
  transition: color 0.2s;
}

.main-nav a:hover,
.main-nav a:focus {
  color: #00796b;
}

.dropdown {
  position: relative;
}

.dropdown .arrow {
  font-size: 0.7em;
  margin-left: 4px;
  transition: transform 0.2s;
  display: inline-block;
}

.dropdown.open > .dropbtn .arrow {
  transform: rotate(180deg);
}

.dropdown .dropdown-content {
  display: none;
  position: absolute;
  background: #fff;
  min-width: 140px;
  left: 0;
  top: 100%;
  padding: 8px 0;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
  z-index: 100;
  animation: dropdown-fade 0.2s;
}

.dropdown.open .dropdown-content {
  display: block;
}

.dropdown-content a {
  display: block;
  padding: 8px 18px;
  color: #222;
  text-decoration: none;
  white-space: nowrap;
}

.dropdown-content a:hover {
  color: #d32f2f;
}

@keyframes dropdown-fade {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 900px) {
  .menu-toggle {
    display: flex;
    position: absolute;
    right: 1rem;
  }

  .main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.95);
    z-index: 999;
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.3s, visibility 0.3s;
  }

  .main-nav.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    overflow-y: auto;
  }

  .main-nav ul {
    flex-direction: column;
    width: 90%;
    max-width: 400px;
    margin: 0 auto;
    padding: 2rem 0;
  }

  .main-nav li {
    margin-bottom: 0.6rem;
  }

  .main-nav a {
    color: #fff;
    font-size: clamp(1.5rem, 6vw, 2.5rem);
    padding: 1.2rem 0;
    text-align: center;
    display: block;
    border-radius: 8px;
  }

  .main-nav a:hover,
  .main-nav a:focus {
    color: #00e6b8;
  }

  .dropdown .dropbtn {
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .dropdown .dropdown-content {
    position: static;
    background: rgba(0,0,0,0.08);
    border: none;
    box-shadow: none;
    padding: 0.5rem 0;
  }

  .dropdown.open .dropdown-content {
    display: block;
  }

  .dropdown-content a {
    color: #fff;
    padding: 1.2rem 0 1.2rem 2.5rem;
    font-size: clamp(1.5rem, 6vw, 2.5rem);
    text-align: left;
  }

  .dropdown-content a:hover {
    color: #00e6b8;
  }
}