:root {
  --bg: #0b0f14;
  --bg-elevated: #121820;
  --bg-card: #161d27;
  --border: #243041;
  --text: #e8edf4;
  --text-muted: #8b9bb0;
  --accent: #3dd6c6;
  --accent-dim: #2a9d8f;
  --accent-glow: rgba(61, 214, 198, 0.15);
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  --radius: 12px;
  --radius-lg: 20px;
  --container: 1120px;
  --header-h: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.container {
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
}

/* Header */

.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(11, 15, 20, 0.82);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}

.site-header.scrolled {
  border-bottom-color: var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.logo-mark {
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 8px;
  background: var(--accent-glow);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-cta {
  padding: 0.55rem 1.1rem;
  border-radius: 999px;
  background: var(--accent);
  color: var(--bg) !important;
}

.nav-cta:hover {
  background: #52e0d2;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  border: none;
  background: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}

/* Hero */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 3rem) 0 4rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, var(--accent-glow), transparent 60%),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(42, 157, 143, 0.08), transparent 55%),
    linear-gradient(180deg, var(--bg) 0%, #0d1219 100%);
}

.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.25;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 40%, black, transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.eyebrow {
  display: inline-block;
  margin: 0 0 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  letter-spacing: 0.04em;
}

.hero h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(2.4rem, 5.5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  max-width: 14ch;
}

.hero-lead {
  margin: 0 0 2rem;
  max-width: 52ch;
  color: var(--text-muted);
  font-size: 1.15rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform 0.15s, background 0.2s, border-color 0.2s;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
}

.btn-primary:hover {
  background: #52e0d2;
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  border-color: var(--text-muted);
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--accent);
}

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

/* Sections */

.section {
  padding: 6rem 0;
}

.section-label {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-dim);
}

.section h2 {
  margin: 0 0 2rem;
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.split-copy p {
  margin: 0 0 1.25rem;
  color: var(--text-muted);
}

.split-copy p:last-child {
  margin-bottom: 0;
}

/* Code block */

.code-block {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-elevated);
  overflow: hidden;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
}

.code-header {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}

.dot:nth-child(1) { background: #ff5f57; }
.dot:nth-child(2) { background: #febc2e; }
.dot:nth-child(3) { background: #28c840; }

.code-title {
  margin-left: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.code-block pre {
  margin: 0;
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
}

.code-block code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--text-muted);
}

.code-block .kw { color: #7ec8e3; }
.code-block .str { color: #a8e6a0; }

/* Services */

.services {
  background: var(--bg-elevated);
  border-block: 1px solid var(--border);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

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

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

.card-icon {
  margin-bottom: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
}

.card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
}

.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* Stack */

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.tech-list li {
  padding: 0.6rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  background: var(--bg-elevated);
}

/* Contact */

.contact-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-inner > div > p:last-of-type {
  color: var(--text-muted);
  max-width: 42ch;
}

.contact-card {
  padding: 2rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, var(--bg-card), var(--bg-elevated));
}

.contact-domain {
  margin: 0 0 0.5rem;
  font-size: 1.5rem;
  font-weight: 700;
}

.contact-domain a,
.contact-email a {
  color: var(--accent);
  transition: color 0.2s;
}

.contact-domain a:hover,
.contact-email a:hover {
  color: #52e0d2;
}

.contact-email {
  margin: 0 0 1rem;
  font-family: var(--font-mono);
  font-size: 1rem;
}

.contact-note {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Footer */

.site-footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-inner a {
  color: var(--accent-dim);
}

.footer-inner a:hover {
  color: var(--accent);
}

/* Responsive */

@media (max-width: 900px) {
  .split,
  .card-grid,
  .contact-inner {
    grid-template-columns: 1fr;
  }

  .split {
    gap: 2.5rem;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 1rem 0 1.5rem;
    background: rgba(11, 15, 20, 0.96);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s, opacity 0.25s;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links li {
    width: 100%;
    text-align: center;
  }

  .nav-links a {
    display: block;
    padding: 0.85rem 1.5rem;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .hero-stats {
    gap: 1.5rem;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}