/* Dropdown Menu */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown .dropbtn {
  display: flex;
  align-items: center;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: var(--white);
  min-width: 220px;
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius);
  z-index: 1001;
  top: 100%;
  left: 0;
  padding: 10px 0;
  border: 1px solid var(--border-gray);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.dropdown:hover .dropdown-content,
.dropdown.active .dropdown-content {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.dropdown-content a {
  color: var(--text-dark);
  padding: 12px 20px;
  text-decoration: none;
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  transition: background-color 0.2s, color 0.2s;
}

.dropdown-content a:hover {
  background-color: var(--light-gray);
  color: var(--red);
}

/* Product Pages Styles */
.product-hero {
  padding: 150px 0 80px;
  background: var(--black);
  color: var(--white);
  text-align: center;
  position: relative;
}

.product-hero h1 {
  color: var(--white);
  margin-bottom: 20px;
}

.product-hero p {
  color: rgba(255, 255, 255, 0.8);
  max-width: 700px;
  margin: 0 auto 30px;
}

.vlt-section {
  padding: 80px 0;
  background: var(--light-gray);
}

.vlt-container {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
  margin-top: 40px;
}

.vlt-box {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
  border: 4px solid var(--white);
}

.vlt-5 { background: rgba(0,0,0,0.95); }
.vlt-20 { background: rgba(0,0,0,0.80); }
.vlt-35 { background: rgba(0,0,0,0.65); }
.vlt-50 { background: rgba(0,0,0,0.50); }
.vlt-70 { background: rgba(0,0,0,0.30); color: var(--text-dark); }

.vlt-label {
  text-align: center;
  margin-top: 15px;
  font-weight: 700;
  font-size: 1.1rem;
}

.vlt-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Specs Table */
.specs-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 40px;
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.specs-table th, .specs-table td {
  padding: 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-gray);
}

.specs-table th {
  background: var(--light-gray);
  font-weight: 700;
  color: var(--text-dark);
  width: 40%;
}

.specs-table td {
  font-weight: 600;
  color: var(--red);
}

.specs-table tr:last-child td, .specs-table tr:last-child th {
  border-bottom: none;
}

/* Layer Diagram */
.layer-diagram {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 40px;
  position: relative;
  padding-left: 40px;
}

.layer {
  background: var(--light-gray);
  padding: 15px 25px;
  border-radius: var(--radius);
  border: 1px solid var(--border-gray);
  font-weight: 600;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  transform-origin: left center;
}

.layer:hover {
  transform: scale(1.02) translateX(10px);
  box-shadow: var(--shadow-md);
  border-color: var(--red);
  color: var(--red);
}

.layer::before {
  content: '';
  position: absolute;
  left: -30px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 2px;
  background: var(--red);
}

.layer-diagram::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: var(--red);
}

/* Upgrade Banner */
.upgrade-banner {
  background: var(--black);
  color: var(--white);
  padding: 60px 40px;
  text-align: left;
  border-radius: var(--radius-lg);
  margin: 80px 0;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.upgrade-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at top right, rgba(215, 25, 32, 0.25) 0%, transparent 60%);
  pointer-events: none;
}

.upgrade-banner-content {
  position: relative;
  z-index: 1;
  max-width: 600px;
}

.upgrade-banner h3 {
  color: var(--white);
  font-size: 2.2rem;
  margin-bottom: 15px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.upgrade-banner p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.15rem;
  margin-bottom: 0;
  line-height: 1.6;
}

.upgrade-banner .btn-primary {
  position: relative;
  z-index: 1;
  white-space: nowrap;
  box-shadow: 0 10px 20px rgba(215, 25, 32, 0.3);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.upgrade-banner .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 30px rgba(215, 25, 32, 0.5);
}

@media (max-width: 768px) {
  .upgrade-banner {
    flex-direction: column;
    text-align: center;
    padding: 40px 25px;
  }
}

@media (max-width: 991px) {
  .dropdown-content {
    position: static;
    min-width: 100%;
    box-shadow: none;
    border: none;
    border-radius: 0;
    padding: 0 0 10px 10px;
    margin-top: 10px;
    opacity: 1;
    display: none;
    transform: none;
  }
  .dropdown.active .dropdown-content {
    display: block;
  }
}