/* ============================================================
   NodeJavaScript — static splash site
   Dark theme · single accent · system fonts · no external assets
   ============================================================ */

:root {
  --bg: #0b100e;
  --bg-soft: #0e1512;
  --surface: #121a16;
  --surface-2: #17211c;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);

  --text: #e8f0ec;
  --text-muted: #9db0a8;

  --accent: #34d399;
  --accent-bright: #6ee7b7;
  --accent-ink: #04241a;
  --accent-soft: rgba(52, 211, 153, 0.12);

  --radius: 16px;
  --radius-lg: 24px;
  --container: 1120px;
  --container-narrow: 760px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Liberation Mono", monospace;

  --shadow-card: 0 10px 30px -12px rgba(0, 0, 0, 0.55);
  --shadow-glow: 0 0 0 1px rgba(52, 211, 153, 0.25),
    0 12px 40px -10px rgba(52, 211, 153, 0.35);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 96px;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--accent-bright);
}

ul[role="list"] {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
}

p {
  margin: 0;
}

/* ---------- Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.container.narrow {
  max-width: var(--container-narrow);
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  transform: translateY(-120%);
  z-index: 100;
  padding: 12px 18px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  border-radius: 0 0 12px 0;
  text-decoration: none;
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

/* ---------- Focus ---------- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand:hover {
  color: var(--text);
}

.brand-mark {
  width: 30px;
  height: 30px;
  color: var(--accent);
  flex-shrink: 0;
}

.brand-name {
  font-size: 1.05rem;
  white-space: nowrap;
}

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

.site-nav {
  display: none;
  align-items: center;
  gap: 28px;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

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

.nav-cta {
  margin-left: auto;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s ease,
    border-color 0.15s ease, box-shadow 0.15s ease, color 0.15s ease;
}

.btn svg {
  width: 18px;
  height: 18px;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  background: var(--accent-bright);
  color: var(--accent-ink);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent-bright);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 10px 18px;
  font-size: 0.88rem;
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: 96px 0 104px;
  overflow: hidden;
  isolation: isolate;
}

/* soft accent glow + grid texture */
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(
      900px 480px at 50% -10%,
      var(--accent-soft),
      transparent 70%
    ),
    radial-gradient(
      700px 400px at 85% 20%,
      rgba(52, 211, 153, 0.07),
      transparent 70%
    );
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 40%, transparent 100%);
  opacity: 0.55;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 880px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 22px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}

.hero-title {
  font-size: clamp(2.9rem, 9vw, 5.4rem);
  line-height: 1.02;
  color: #ffffff;
  margin-bottom: 20px;
}

.hero-js {
  color: var(--accent);
}

.hero-tagline {
  font-size: clamp(1.3rem, 3.4vw, 1.9rem);
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text);
  margin-bottom: 16px;
}

.hero-tagline strong {
  color: var(--accent-bright);
  font-weight: 600;
}

.hero-sub {
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  max-width: 34em;
  color: var(--text-muted);
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

/* ---------- Sections ---------- */
.section {
  padding: 88px 0;
  border-top: 1px solid var(--border);
}

.section-services {
  background: var(--bg-soft);
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.75rem, 4.4vw, 2.6rem);
  margin-bottom: 28px;
}

/* ---------- About ---------- */
.about-copy {
  display: grid;
  gap: 18px;
  color: var(--text-muted);
  font-size: 1.06rem;
}

.about-copy p:first-child {
  color: var(--text);
}

/* ---------- Services ---------- */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 8px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 28px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform 0.18s ease, border-color 0.18s ease,
    box-shadow 0.18s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-card);
}

.card-icon {
  width: 34px;
  height: 34px;
  color: var(--accent);
}

.card-title {
  font-size: 1.12rem;
  font-weight: 650;
}

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

/* ---------- Contact ---------- */
.contact-lede {
  color: var(--text-muted);
  font-size: 1.06rem;
  max-width: 30em;
  margin-bottom: 28px;
}

.contact-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 30px;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.15s ease;
}

a.contact-card:hover {
  border-color: var(--accent);
  color: var(--text);
}

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.contact-value {
  font-size: 1.05rem;
  font-weight: 600;
  overflow-wrap: anywhere;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-soft);
  padding: 40px 0;
}

.footer-wrap {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  color: var(--text);
}

.footer-mark {
  width: 24px;
  height: 24px;
  color: var(--accent);
}

.footer-copy {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.footer-link {
  color: var(--text-muted);
  font-size: 0.92rem;
}

.footer-link:hover {
  color: var(--accent-bright);
}

/* ---------- Reveal-on-scroll ---------- */
/* Only hidden when JS is present, so content is never lost without it. */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.js [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Responsive ---------- */
@media (min-width: 640px) {
  .site-nav {
    display: flex;
  }

  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .contact-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-wrap {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

  .footer-copy {
    margin-left: auto;
  }
}

@media (min-width: 900px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .section {
    padding: 112px 0;
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .card:hover,
  .btn:hover {
    transform: none;
  }
}