:root {
  --bg-dark: #0a0e17;
  --bg-midnight: #101626;
  --card-bg: #151d30;
  --card-border: #1f2b45;
  --accent: #ff9900; /* Amazon Amber */
  --accent-glow: rgba(255, 153, 0, 0.25);
  --accent-hover: #e68a00;
  --accent-blue: #3b82f6;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navbar */
.navbar {
  background: rgba(10, 14, 23, 0.85);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--card-border);
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: #fff;
  font-weight: 700;
  font-size: 1.25rem;
}
.logo-box {
  background: var(--accent);
  color: #000;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 0.9rem;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: #fff;
}

/* Buttons */
.btn-primary {
  background: var(--accent);
  color: #000;
  font-weight: 700;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  display: inline-block;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}
.btn-primary-sm {
  background: var(--accent);
  color: #000;
  font-weight: 700;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: 0.9rem;
}
.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-weight: 600;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  display: inline-block;
  border: 1px solid var(--card-border);
  transition: background 0.2s;
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

/* Hero Section */
.hero-section {
  padding: 5rem 0 3.5rem;
  text-align: center;
  background: radial-gradient(circle at 50% 20%, rgba(255, 153, 0, 0.1) 0%, transparent 60%);
}
.hero-badge {
  display: inline-block;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  background: rgba(255, 153, 0, 0.12);
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(255, 153, 0, 0.25);
}
h1 {
  font-size: 3.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}
.highlight {
  background: linear-gradient(135deg, #ffffff 0%, #ff9900 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-lead {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 2.5rem;
}
.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
  flex-wrap: wrap;
}
.hero-stats-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  max-width: 880px;
  margin: 0 auto;
}
.stat-item { text-align: center; }
.stat-number { font-size: 1.8rem; font-weight: 800; color: var(--accent); }
.stat-label { font-size: 0.85rem; color: var(--text-muted); }
.stat-divider { width: 1px; height: 40px; background: var(--card-border); }

/* Sections */
section { padding: 5rem 0; }
.section-dark { background: var(--bg-dark); }
.section-midnight { background: var(--bg-midnight); }
.section-header { text-align: center; margin-bottom: 3rem; }
.sub-badge { color: var(--accent); font-weight: 700; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.5rem; }
h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 0.75rem; }

/* Cards Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}
.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}
.danger-card { border-left: 4px solid var(--danger); }
.card-icon { font-size: 2rem; margin-bottom: 0.75rem; }
.feature-card h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.feature-card p { font-size: 0.95rem; color: var(--text-muted); line-height: 1.5; }
.cost-tag { margin-top: 1rem; font-weight: 700; color: var(--danger); font-size: 0.85rem; }

/* Steps */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.step-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
}
.highlight-step { border: 1px solid var(--accent); }
.step-number { font-size: 2.5rem; font-weight: 900; color: rgba(255, 153, 0, 0.3); line-height: 1; margin-bottom: 0.75rem; }

/* Calculator */
.calculator-card {
  background: linear-gradient(145deg, #182238 0%, #101626 100%);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}
.calc-header { text-align: center; margin-bottom: 2rem; }
.calc-body {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  align-items: center;
  justify-content: space-between;
}
.calc-sliders { flex: 1; min-width: 320px; }
.control-group { margin-bottom: 1.5rem; }
.slider-label { display: flex; justify-content: space-between; font-weight: 600; margin-bottom: 0.5rem; }
.highlight-val { color: var(--accent); font-weight: 800; }
.danger-val { color: var(--danger); font-weight: 800; }
input[type=range] { width: 100%; accent-color: var(--accent); height: 8px; border-radius: 4px; background: #334155; }
.calc-result-box {
  background: rgba(0,0,0,0.5);
  border-left: 4px solid var(--success);
  border-radius: var(--radius-md);
  padding: 2rem;
  min-width: 340px;
}
.res-title { font-size: 0.85rem; color: #94a3b8; text-transform: uppercase; font-weight: 600; }
.res-amount { font-size: 2.8rem; font-weight: 900; color: var(--success); }
.res-detail { font-size: 0.9rem; color: #cbd5e1; margin-top: 0.5rem; }

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.pricing-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  position: relative;
}
.featured-pricing { border: 2px solid var(--accent); transform: scale(1.02); }
.popular-ribbon {
  position: absolute;
  top: -12px;
  right: 20px;
  background: var(--accent);
  color: #000;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
}
.price-val { font-size: 2.5rem; font-weight: 900; color: #fff; margin: 0.75rem 0 0.25rem; }
.price-val span { font-size: 1rem; color: var(--text-muted); font-weight: normal; }
.price-sub { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 1.5rem; }
.price-features { list-style: none; margin-bottom: 2rem; flex: 1; }
.price-features li { padding: 0.4rem 0; font-size: 0.9rem; color: #cbd5e1; }

/* Contact Form */
.contact-container { max-width: 780px; margin: 0 auto; }
.contact-header { text-align: center; margin-bottom: 2rem; }
.demo-form {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}
.form-row { display: flex; gap: 1rem; flex-wrap: wrap; margin-bottom: 1rem; }
.form-group { flex: 1; min-width: 240px; display: flex; flex-direction: column; margin-bottom: 1rem; }
.form-group label { font-size: 0.85rem; font-weight: 600; margin-bottom: 0.4rem; color: #cbd5e1; }
.form-group input, .form-group select, .form-group textarea {
  background: #0f172a;
  border: 1px solid #334155;
  color: #fff;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}

/* Footer */
.site-footer {
  background: #070a10;
  border-top: 1px solid var(--card-border);
  padding: 3rem 0 1.5rem;
}
.footer-content { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 2rem; margin-bottom: 2rem; }
.footer-brand p { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.5rem; }
.footer-links { display: flex; gap: 3rem; }
.footer-links h4 { font-size: 0.85rem; color: #fff; text-transform: uppercase; margin-bottom: 0.75rem; }
.footer-links a { display: block; color: var(--text-muted); text-decoration: none; font-size: 0.85rem; margin-bottom: 0.4rem; }
.footer-bottom { text-align: center; border-top: 1px solid #1a2234; padding-top: 1.5rem; color: #64748b; font-size: 0.8rem; }

@media (max-width: 768px) {
  h1 { font-size: 2.2rem; }
  .hero-stats-banner { flex-direction: column; gap: 1rem; }
  .stat-divider { display: none; }
  .nav-links { display: none; }
}