/* ===== AeroSim Design System ===== */
/* Cockpit Noir Theme - Dark mode with amber accents */

:root {
  /* Colors */
  --bg-primary: #080c16;
  --bg-secondary: #0d1320;
  --bg-card: #111827;
  --bg-card-hover: #1a2236;
  --border-card: #1e293b;
  --border-card-hover: #f59e0b33;
  --amber: #f59e0b;
  --amber-dark: #d97706;
  --amber-light: #fbbf24;
  --amber-glow: rgba(245, 158, 11, 0.15);
  --amber-glow-strong: rgba(245, 158, 11, 0.25);
  --text-primary: #e2ebf3;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --white: #ffffff;
  --green-check: #22c55e;

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --section-padding: 120px 0;
  --container-max: 1280px;
  --container-padding: 0 40px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

img {
  display: block;
  max-width: 100%;
}

button {
  font-family: var(--font-family);
  cursor: pointer;
  border: none;
  outline: none;
}

input, textarea, select {
  font-family: var(--font-family);
  outline: none;
}

/* ===== Container ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--container-padding);
}

/* ===== Section Label ===== */
.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 16px;
}

.section-label-center {
  text-align: center;
}

/* ===== Section Title ===== */
.section-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.section-title span {
  color: var(--amber);
  font-style: italic;
}

.section-title-center {
  text-align: center;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(8, 12, 22, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(30, 41, 59, 0.5);
  transition: all var(--transition-medium);
}

.navbar-scrolled {
  background: rgba(8, 12, 22, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 40px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.3rem;
  font-weight: 700;
}

.navbar-logo-icon {
  width: 40px;
  height: 40px;
  background: var(--amber);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--bg-primary);
  font-size: 1.1rem;
}

.navbar-logo-text span {
  color: var(--amber);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.navbar-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.navbar-links a:hover {
  color: var(--white);
}

.navbar-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--amber);
  transition: width var(--transition-medium);
}

.navbar-links a:hover::after {
  width: 100%;
}

.navbar-cta {
  padding: 10px 24px;
  background: transparent;
  border: 1.5px solid var(--amber);
  color: var(--amber);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition-medium);
  letter-spacing: 0.02em;
}

.navbar-cta:hover {
  background: var(--amber);
  color: var(--bg-primary);
  box-shadow: 0 0 24px var(--amber-glow-strong);
  transform: translateY(-1px);
}

/* Mobile menu button */
.navbar-mobile-btn {
  display: none;
  background: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  padding: 8px;
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 72px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(8, 12, 22, 0.92) 0%,
    rgba(8, 12, 22, 0.7) 50%,
    rgba(8, 12, 22, 0.4) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 80px 40px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--amber);
}

.hero-badge svg {
  width: 20px;
  height: 20px;
}

.hero-title {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.08;
  max-width: 700px;
  letter-spacing: -0.03em;
}

.hero-title span {
  color: var(--amber);
  font-style: italic;
}

.hero-description {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  background: var(--amber);
  color: var(--bg-primary);
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 700;
  transition: all var(--transition-medium);
  border: none;
}

.btn-primary:hover {
  background: var(--amber-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--amber-glow-strong);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition-medium);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
}

/* Hero Stats Bar */
.hero-stats {
  display: flex;
  gap: 48px;
  padding-top: 48px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 32px;
}

.hero-stat-value {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--amber);
  letter-spacing: -0.02em;
}

.hero-stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ===== Services Section ===== */
.services {
  padding: var(--section-padding);
  background: var(--bg-primary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--amber), transparent);
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.service-card:hover {
  border-color: var(--border-card-hover);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  width: 52px;
  height: 52px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--amber);
  font-size: 1.3rem;
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--white);
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== App Section ===== */
.app-section {
  padding: var(--section-padding);
  background: var(--bg-secondary);
}

.app-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.app-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 32px;
}

.app-feature {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.app-feature-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
  font-size: 1.1rem;
}

.app-feature h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--amber);
  margin-bottom: 6px;
}

.app-feature p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.app-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-card);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
  transition: transform var(--transition-slow);
}

.app-image:hover {
  transform: scale(1.02);
}

.app-image img {
  width: 100%;
  height: auto;
}

/* ===== Programs Section ===== */
.programs {
  padding: var(--section-padding);
  background: var(--bg-primary);
}

.programs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 48px;
}

.program-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: all var(--transition-medium);
}

.program-card:hover {
  border-color: var(--border-card-hover);
  transform: translateY(-2px);
}

.program-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.program-icon {
  width: 52px;
  height: 52px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
  font-size: 1.3rem;
}

.program-module {
  font-family: 'Courier New', monospace;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.1em;
}

.program-card h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--white);
  margin-top: 4px;
}

.program-objective {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.program-objective strong {
  color: var(--text-primary);
}

.program-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.program-items li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-primary);
}

.program-items li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--amber);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

/* ===== Pricing Section ===== */
.pricing {
  padding: var(--section-padding);
  background: var(--bg-secondary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.pricing-card.featured {
  border-color: var(--amber);
  box-shadow: 0 0 30px var(--amber-glow);
}

.pricing-card:hover {
  transform: translateY(-4px);
}

.pricing-badge {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 12px;
}

.pricing-card h3 {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
}

.pricing-price {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--amber);
  margin-bottom: 4px;
  letter-spacing: -0.02em;
}

.pricing-period {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  margin-bottom: 28px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-primary);
}

.pricing-features li svg {
  color: var(--green-check);
  min-width: 16px;
}

.pricing-btn {
  width: 100%;
  padding: 14px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  text-align: center;
  transition: all var(--transition-medium);
}

.pricing-btn-outline {
  background: transparent;
  border: 1px solid var(--border-card);
  color: var(--text-primary);
}

.pricing-btn-outline:hover {
  border-color: var(--amber);
  color: var(--amber);
}

.pricing-btn-filled {
  background: var(--amber);
  color: var(--bg-primary);
  border: none;
}

.pricing-btn-filled:hover {
  background: var(--amber-light);
  box-shadow: 0 4px 20px var(--amber-glow-strong);
}

/* ===== Why Section ===== */
.why-section {
  padding: var(--section-padding);
  background: var(--bg-primary);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  margin-top: 56px;
  text-align: center;
}

.why-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.why-icon {
  width: 64px;
  height: 64px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
  font-size: 1.5rem;
  margin-bottom: 8px;
  transition: all var(--transition-medium);
}

.why-card:hover .why-icon {
  background: rgba(245, 158, 11, 0.2);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px var(--amber-glow);
}

.why-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
}

.why-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== Contact Section ===== */
.contact-section {
  padding: var(--section-padding);
  background: var(--bg-secondary);
}

.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-top: 32px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.contact-item-icon {
  width: 48px;
  height: 48px;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--amber);
  font-size: 1.1rem;
}

.contact-item span {
  font-size: 0.95rem;
  color: var(--text-primary);
}

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.form-group:last-of-type {
  margin-bottom: 0;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--amber);
  box-shadow: 0 0 0 3px var(--amber-glow);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-submit {
  width: 100%;
  padding: 16px;
  background: var(--amber);
  color: var(--bg-primary);
  border: none;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 700;
  margin-top: 24px;
  transition: all var(--transition-medium);
}

.form-submit:hover {
  background: var(--amber-light);
  box-shadow: 0 8px 32px var(--amber-glow-strong);
  transform: translateY(-2px);
}

/* ===== Footer ===== */
.footer {
  padding: 40px 0;
  border-top: 1px solid rgba(30, 41, 59, 0.5);
  background: var(--bg-primary);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 40px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
}

.footer-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--amber);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--bg-primary);
  font-size: 0.95rem;
}

.footer-logo-text span {
  color: var(--amber);
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(40px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.animate-fade-in-up {
  animation: fadeInUp 0.7s ease forwards;
  opacity: 0;
}

.animate-fade-in {
  animation: fadeIn 0.8s ease forwards;
  opacity: 0;
}

.animate-slide-left {
  animation: slideInLeft 0.7s ease forwards;
  opacity: 0;
}

.animate-slide-right {
  animation: slideInRight 0.7s ease forwards;
  opacity: 0;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }
.delay-600 { animation-delay: 0.6s; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .services-grid,
  .pricing-grid,
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .app-inner {
    grid-template-columns: 1fr;
  }

  .contact-inner {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 80px 0;
    --container-padding: 0 20px;
  }

  .navbar-links {
    display: none;
  }

  .navbar-mobile-btn {
    display: block;
  }

  .navbar-inner {
    padding: 0 20px;
  }

  .hero-content {
    padding: 60px 20px;
  }

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

  .services-grid,
  .programs-grid,
  .pricing-grid,
  .why-grid {
    grid-template-columns: 1fr;
  }

  .app-features {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn-primary, .btn-secondary {
    justify-content: center;
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
    gap: 16px;
    text-align: center;
    padding: 0 20px;
  }

  /* Mobile menu */
  .navbar-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(8, 12, 22, 0.98);
    padding: 24px;
    border-bottom: 1px solid var(--border-card);
    gap: 16px;
  }
}