:root {
  --primary: #111f3b;
  --secondary: #725251;
  --text: #ffffff;
  --text-muted: #a0aec0;
  --bg: #000000;
  --card-bg: #0a0a0a;
  --border: rgba(114, 82, 81, 0.2);
}
/* Webkit (Chrome, Edge, Safari) */
::-webkit-scrollbar {
  display: none;
}

/* Firefox */
* {
  scrollbar-width: none;
  -ms-overflow-style: none; /* Internet Explorer 10+ */
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.intro {
  text-align: center;
  padding: 4rem 0;
}

.intro h1 {
  font-size: 5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, #fff, var(--secondary));
  -webkit-background-clip: text;
  color: transparent;
}

.intro p {
  color: var(--text-muted);
  font-size: 2rem;
}

.calculation-form {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 2rem;
  margin-top: 2rem;
}

.service-options {
  background: linear-gradient(145deg, var(--primary), rgba(17, 31, 59, 0.3));
  border-radius: 20px;
  padding: 2rem;
  border: 1px solid var(--border);
}

.option-group {
  margin-bottom: 2rem;
}

.option-group h3 {
  margin-bottom: 1rem;
  color: var(--text);
  font-size: 1.2rem;
}

.radio-group, .checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.radio-option, .checkbox-option {
  display: flex;
  align-items: center;
  padding: 1rem;
  background: rgba(114, 82, 81, 0.1);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.3s ease;
}

.radio-option:hover, .checkbox-option:hover {
  background: rgba(114, 82, 81, 0.2);
}

.radio-label, .checkbox-label {
  flex: 1;
  margin-left: 1rem;
}

.price {
  color: var(--secondary);
  font-weight: 600;
}

.range-group {
  padding: 0 1rem;
}

input[type="range"] {
  width: 100%;
  height: 6px;
  background: var(--primary);
  border-radius: 3px;
  outline: none;
  -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  background: var(--secondary);
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.3s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.range-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 0.5rem;
  color: var(--text-muted);
}

.range-value {
  display: flex;
  justify-content: space-between;
  margin-top: 1rem;
  font-weight: 600;
}

.price-summary {
  position: sticky;
  top: 2rem;
}

.summary-card {
  background: linear-gradient(145deg, var(--primary), rgba(17, 31, 59, 0.3));
  border-radius: 20px;
  padding: 2rem;
  border: 1px solid var(--border);
}

.summary-items {
  margin: 2rem 0;
}

.summary-item {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.total-price {
  display: flex;
  justify-content: space-between;
  font-size: 1.5rem;
  font-weight: 800;
  margin: 2rem 0;
  padding-top: 2rem;
  border-top: 2px solid var(--border);
}

.cta-button {
  display: block;
  width: 100%;
  padding: 1rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  text-decoration: none;
  text-align: center;
  border-radius: 12px;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  margin-top: 2rem;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.price-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 1rem;
}

@media (max-width: 768px) {
  .calculation-form{
    grid-template-columns: 1fr;
  }
  
  .price-summary {
    position: static;
  }
  
  .intro h1 {
    font-size: 2rem;
  }
}

.particles-background {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}