.site-header {
  background: linear-gradient(to bottom, #373f3f, transparent);
  color: #fff;
  padding: 0;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 10000;
  box-shadow: none;
  transition: all 0.3s cubic-bezier(.4,0,.2,1);
}

.site-header.is-sticky {
  background: #fff;
  color: #373f3f;
  box-shadow: 0 2px 12px rgba(55,63,63,0.06);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1800px;
  margin: 0 auto;
  padding: 20px 24px;
  transition: padding 0.3s cubic-bezier(.4,0,.2,1);
}

.site-header.is-sticky .header-container {
  padding: 15px 24px;
}

.logo {
  display: flex;
  align-items: center;
  position: relative;
}

.logo img {
  height: 120px;
  transition: height 0.3s cubic-bezier(.4,0,.2,1);
}

.site-header.is-sticky .logo img {
  height: 120px;
}

.logo .logo-transparent {
  display: block;
  opacity: 1;
  transition: opacity 0.3s cubic-bezier(.4,0,.2,1);
}

.logo .logo-fixed {
  display: block;
  opacity: 0;
  position: absolute;
  top: 0;
  left: 0;
  transition: opacity 0.3s cubic-bezier(.4,0,.2,1);
}

.site-header.is-sticky .logo .logo-transparent {
  opacity: 0;
}

.site-header.is-sticky .logo .logo-fixed {
  opacity: 1;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 30px;
  align-items: center;
}

.nav-menu li {
  margin: 0;
}

.nav-menu a {
  color: inherit;
  text-decoration: none;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  transition: color 0.3s ease;
  position: relative;
}

.nav-menu a:hover {
  color: rgba(255, 255, 255, 0.8);
}

.site-header.is-sticky .nav-menu a:hover {
  color: #2c3536;
}

.book-btn {
  background: rgba(255, 255, 255, 0.2);
  color: #fff !important;
  padding: 15px 29px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: 500;
  font-size: 16px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.book-btn:hover {
  background: #373f3f;
  border-color: #373f3f;
  transform: translateY(-1px);
}

.site-header.is-sticky .book-btn {
  background: #373f3f;
  color: #fff !important;
  border: 1px solid #373f3f;
}

.site-header.is-sticky .book-btn:hover {
  background: #2c3536;
  border-color: #2c3536;
}

/* =============================
   MENU HAMBURGUESA (MÓVIL)
   ============================= */
.menu-hamburger {
  display: none;
  align-items: center;
}

#menuBtn {
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  outline: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hamburger-line {
  display: block;
  height: 2px;
  background: #fff;
  transition: all 0.3s ease;
}

.site-header.is-sticky .hamburger-line {
  background: #373f3f;
}

.hamburger-line.long {
  width: 24px;
}

.hamburger-line.short {
  width: 18px;
}

/* =============================
   SIDE MENU (MÓVIL)
   ============================= */
.menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 9998;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  backdrop-filter: blur(5px);
}

.menu-overlay.open {
  opacity: 1;
  visibility: visible;
}

.side-menu {
  position: fixed;
  top: 0;
  right: -300px;
  width: 300px;
  height: 100%;
  background: #2c3e3f;
  color: #fff;
  z-index: 9999;
  transition: right 0.3s ease;
  overflow-y: auto;
  padding: 20px;
}

.side-menu.open {
  right: 0;
}

.close-btn {
  background: none;
  border: none;
  color: #fff;
  font-size: 24px;
  cursor: pointer;
  position: absolute;
  top: 20px;
  right: 20px;
}

.side-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.side-nav li {
  margin-bottom: 15px;
}

.side-nav a {
  color: #fff;
  text-decoration: none;
  font-size: 16px;
  display: block;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: color 0.3s ease;
}

.side-nav a:hover {
  color: #66b3a3;
}

.side-nav .book-btn {
  background: #373f3f;
  color: #fff !important;
  border: 2px solid #fff;
  padding: 15px 29px;
  border-radius: 25px;
  text-decoration: none;
  font-weight: 500;
  font-size: 16px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 20px auto;
  width: fit-content;
  transition: all 0.3s ease;
  border-bottom: none;
}

.side-nav .book-btn:hover {
  background: #2c3536;
  border-color: #2c3536;
  color: #fff !important;
}

.menu-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.2);
  margin: 20px 0;
}

/* =============================
   RESPONSIVE
   ============================= */
@media (min-width: 1025px) {
  .menu-hamburger {
    display: none !important;
  }
}

@media (max-width: 1024px) {
  .main-nav {
    display: none;
  }
  
  .menu-hamburger {
    display: flex;
  }
  
  .header-container {
    height: 100px;
    align-items: center;
  }
  
  .site-header.is-sticky .header-container {
    height: 80px;
  }
  
  .logo {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }
  
  .logo img {
    height: 80px;
  }
  
  .site-header.is-sticky .logo img {
    height: 60px;
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: 15px;
    height: 110px;
    align-items: center;
  }
  
  .site-header.is-sticky .header-container {
    height: 100px;
    align-items: center;
  }
  
  .logo img {
    height: 90px;
  }
  
  .site-header.is-sticky .logo img {
    height: 70px;
  }

  .menu-hamburger {
    align-items: center;
  }
}