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

:root {
  --color-primary: #0a1628;
  --color-white: #ffffff;
  --color-accent: #b8860b;
  --color-bg: #f8f9fa;
  --transition: cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  font-family: "Roboto", sans-serif;
  background: var(--color-white);
  color: var(--color-primary);
  overflow-x: hidden;
}

/* Top bar */
.top-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(10, 22, 40, 0.1);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5%;
}

.back-button {
  display: flex;
  align-items: center;
  gap: 15px;
  text-decoration: none;
  color: var(--color-primary);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 400;
  transition: all 0.3s ease;
  padding: 10px 20px;
  border: 1px solid transparent;
}

.back-button::before {
  content: "←";
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

.back-button:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.back-button:hover::before {
  transform: translateX(-5px);
}

.top-logo {
  display: flex;
  align-items: center;
  gap: 15px;
}

.top-logo img {
  width: 40px;
  height: 40px;
}

.top-logo-text {
  font-family: "Roboto Condensed", sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--color-primary);
}

.logo-accent {
  color: var(--color-accent);
}

/* Main container */
.main-container {
  margin-top: 80px;
  min-height: calc(100vh - 80px);
}

/* Page header */
.page-header {
  padding: 60px 5% 40px;
  border-bottom: 1px solid rgba(10, 22, 40, 0.08);
}

.page-breadcrumb {
  font-size: 0.7rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: rgba(10, 22, 40, 0.5);
  margin-bottom: 20px;
  font-weight: 300;
}

.page-title {
  font-family: "Roboto Condensed", sans-serif;
  font-size: 3.5rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 20px;
  line-height: 1.1;
}

.page-subtitle {
  font-size: 1rem;
  color: rgba(10, 22, 40, 0.6);
  font-weight: 300;
  max-width: 700px;
}

/* Type selector */
.type-selector {
  padding: 60px 5%;
  background: var(--color-bg);
}

.selector-label {
  font-size: 0.7rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 25px;
  font-weight: 500;
  text-align: center;
}

.type-buttons {
  display: flex;
  gap: 30px;
  max-width: 800px;
  margin: 0 auto;
  justify-content: center;
}

.type-btn {
  flex: 1;
  padding: 40px;
  background: var(--color-white);
  border: 2px solid rgba(10, 22, 40, 0.1);
  cursor: pointer;
  transition: all 0.4s var(--transition);
  text-align: center;
}

.type-btn:hover {
  border-color: rgba(10, 22, 40, 0.3);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(10, 22, 40, 0.1);
}

.type-btn.active {
  border-color: var(--color-accent);
  background: rgba(184, 134, 11, 0.02);
  border-width: 3px;
}

.type-icon {
  font-size: 3rem;
  margin-bottom: 20px;
}

.type-name {
  font-family: "Roboto Condensed", sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-primary);
}

/* Categories section */
.categories-section {
  padding: 80px 5%;
  display: none;
}

.categories-section.active {
  display: block;
}

.section-title {
  font-family: "Roboto Condensed", sans-serif;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 50px;
  text-align: center;
}

/* Premium helicopter special */
.premium-showcase {
  max-width: 1000px;
  margin: 0 auto 80px;
  background: linear-gradient(135deg, #b8860b 0%, #d4af37 100%);
  padding: 60px;
  position: relative;
  overflow: hidden;
}

.premium-showcase::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 70%
  );
  animation: shimmer 4s ease-in-out infinite;
}

@keyframes shimmer {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
    opacity: 0.3;
  }
  50% {
    transform: translate(-20px, -20px) scale(1.1);
    opacity: 0.6;
  }
}

.premium-content {
  position: relative;
  z-index: 2;
  text-align: center;
}

.premium-label {
  font-size: 0.75rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: rgba(10, 22, 40, 0.8);
  margin-bottom: 15px;
  font-weight: 500;
}

.premium-title {
  font-family: "Roboto Condensed", sans-serif;
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.premium-description {
  font-size: 1.1rem;
  color: rgba(10, 22, 40, 0.8);
  margin-bottom: 30px;
  font-weight: 300;
  line-height: 1.8;
}

.premium-price {
  font-family: "Roboto Condensed", sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 30px;
}

.premium-icon {
  font-size: 5rem;
  margin-bottom: 30px;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-15px);
  }
}

.premium-btn {
  display: inline-block;
  padding: 18px 50px;
  background: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  font-size: 0.8rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 500;
  transition: all 0.4s ease;
  border: 2px solid var(--color-primary);
}

.premium-btn:hover {
  background: transparent;
  color: var(--color-primary);
  transform: translateY(-3px);
}

/* Standard grid */
.vehicles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 30px;
  max-width: 1400px;
  margin: 0 auto;
}

.vehicle-card {
  background: var(--color-white);
  border: 1px solid rgba(10, 22, 40, 0.1);
  overflow: hidden;
  transition: all 0.4s var(--transition);
  cursor: pointer;
}

.vehicle-card:hover {
  border-color: rgba(10, 22, 40, 0.2);
  transform: translateY(-5px);
  box-shadow: 0 15px 40px rgba(10, 22, 40, 0.1);
}

.vehicle-card.selected {
  border-color: var(--color-accent);
  border-width: 2px;
  box-shadow: 0 15px 40px rgba(184, 134, 11, 0.2);
}

.vehicle-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: var(--color-bg);
}

.vehicle-content {
  padding: 30px;
}

.vehicle-category {
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
  font-weight: 500;
}

.vehicle-name {
  font-family: "Roboto Condensed", sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 15px;
}

.vehicle-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 20px;
}

.spec-item {
  font-size: 0.8rem;
  color: rgba(10, 22, 40, 0.6);
  font-weight: 300;
}

.vehicle-rate {
  font-family: "Roboto Condensed", sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* Configuration panel */
.config-panel {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: var(--color-primary);
  padding: 30px 5%;
  z-index: 999;
  transform: translateY(100%);
  transition: transform 0.6s var(--transition);
  box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.2);
}

.config-panel.active {
  transform: translateY(0);
}

.config-container {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 400px;
  gap: 40px;
  align-items: center;
}

.config-item {
  color: var(--color-white);
}

.config-label {
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 12px;
  font-weight: 400;
}

.config-value {
  font-family: "Roboto Condensed", sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 15px;
}

/* Duration slider in panel */
input[type="range"] {
  width: 100%;
  height: 2px;
  background: rgba(255, 255, 255, 0.2);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background: var(--color-accent);
  cursor: pointer;
  border-radius: 50%;
}

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: var(--color-accent);
  cursor: pointer;
  border-radius: 50%;
  border: none;
}

/* Pilot toggle */
.pilot-toggle {
  display: flex;
  align-items: center;
  gap: 15px;
}

.toggle-switch {
  position: relative;
  width: 50px;
  height: 26px;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 26px;
  cursor: pointer;
  transition: background 0.3s ease;
}

.toggle-switch.active {
  background: var(--color-accent);
}

.toggle-slider {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 20px;
  height: 20px;
  background: var(--color-white);
  border-radius: 50%;
  transition: transform 0.3s ease;
}

.toggle-switch.active .toggle-slider {
  transform: translateX(24px);
}

/* Price summary in panel */
.panel-price {
  background: var(--color-accent);
  padding: 25px 30px;
  text-align: center;
}

.panel-price-label {
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: rgba(10, 22, 40, 0.7);
  margin-bottom: 10px;
}

.panel-price-amount {
  font-family: "Roboto Condensed", sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.panel-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.panel-btn {
  padding: 12px 0;
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.3s ease;
  font-family: "Roboto", sans-serif;
}

.panel-btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.panel-btn-primary:hover {
  background: rgba(10, 22, 40, 0.9);
}

.panel-btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid rgba(10, 22, 40, 0.3);
}

.panel-btn-secondary:hover {
  border-color: var(--color-primary);
}

/* Responsive */
@media (max-width: 1200px) {
  .config-container {
    grid-template-columns: 1fr 1fr 350px;
  }

  .config-item:nth-child(3) {
    grid-column: 1 / -1;
  }
}

@media (max-width: 968px) {
  .top-bar {
    height: 70px;
    padding: 0 4%;
  }

  .page-header {
    padding: 50px 4% 30px;
  }

  .page-title {
    font-size: 2.5rem;
  }

  .type-buttons {
    flex-direction: column;
    gap: 20px;
  }

  .premium-showcase {
    padding: 40px 30px;
  }

  .premium-title {
    font-size: 2.2rem;
  }

  .vehicles-grid {
    grid-template-columns: 1fr;
  }

  .config-container {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .config-panel {
    padding: 25px 4%;
  }
}

@media (max-width: 768px) {
  .top-bar {
    height: 60px;
  }

  .page-title {
    font-size: 2rem;
  }

  .premium-title {
    font-size: 1.8rem;
  }

  .premium-price {
    font-size: 2rem;
  }

  .panel-price-amount {
    font-size: 2rem;
  }
}