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

:root {
  --bg: #0d0d0f;
  --bg-card: #161619;
  --border: #2a2a2f;
  --text: #e8e8ec;
  --text-muted: #888899;
  --orange: #f97316;
  --orange-dim: #c2510f;
  --red: #ef4444;
  --gradient: linear-gradient(135deg, #f97316, #ef4444);
}

html {
  scroll-behavior: smooth;
}

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

/* ---- NAV ---- */

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 13, 15, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

nav {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}

.logo-icon {
  font-size: 1.3rem;
}

.logo-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--text);
}

/* ---- HERO ---- */

.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 7rem 1.5rem 6rem;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 4rem;
}

.hero-content h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  max-width: 18ch;
}

.highlight {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.tagline {
  margin-top: 1.25rem;
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 40ch;
}

.cta-button {
  display: inline-block;
  margin-top: 2rem;
  padding: 0.75rem 1.75rem;
  background: var(--gradient);
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: opacity 0.2s, transform 0.2s;
}

.cta-button:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ---- FLAME GRAPHIC ---- */

.hero-graphic {
  position: relative;
  width: 200px;
  height: 200px;
  flex-shrink: 0;
}

.flame-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;
  background: var(--gradient) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  animation: pulse 3s ease-in-out infinite;
  opacity: 0.7;
}

.flame-ring.delay-1 {
  inset: -18px;
  animation-delay: 0.6s;
  opacity: 0.45;
}

.flame-ring.delay-2 {
  inset: -38px;
  animation-delay: 1.2s;
  opacity: 0.2;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.05); opacity: 0.4; }
}

/* ---- FEATURES ---- */

.features {
  padding: 6rem 1.5rem;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.features h2,
.contact h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.feature-grid {
  max-width: 1100px;
  margin: 3rem auto 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: border-color 0.2s, transform 0.2s;
}

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

.feature-icon {
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ---- PRODUCTS ---- */

.products {
  padding: 6rem 1.5rem;
}

.products h2 {
  text-align: center;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.product-grid {
  max-width: 1100px;
  margin: 3rem auto 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.product-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.2s, transform 0.2s;
}

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

.product-icon {
  font-size: 1.75rem;
  margin-bottom: 1rem;
}

.product-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.product-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.product-link {
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- FOOTER ---- */

footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ---- RESPONSIVE ---- */

@media (max-width: 700px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 4rem;
    padding-bottom: 4rem;
  }

  .hero-graphic {
    display: none;
  }
}