/* ============================================================
   PartPix — Enterprise batch parts intelligence
   Island Development Crew LLC · (c) 2026
   Palette: Blue #0052CC -> Teal #00B4D8 on deep navy-slate
   Fonts: Space Grotesk (display) / Inter (body) / JetBrains Mono
   ============================================================ */

:root {
  --bg: #060b14;
  --bg-raise: #0a1120;
  --panel: rgba(255, 255, 255, 0.028);
  --panel-strong: rgba(255, 255, 255, 0.05);
  --line: rgba(140, 178, 224, 0.14);
  --line-strong: rgba(140, 178, 224, 0.26);

  --text: #e9f0f9;
  --text-dim: #9db0c8;
  --text-faint: #6f849c;

  --blue: #0052cc;
  --teal: #00b4d8;
  --teal-bright: #35cfee;
  --grade-a: #34d399;
  --amber: #f5b04c;
  --flag: #f87171;

  --grad: linear-gradient(135deg, #0052cc 0%, #0077cf 46%, #00b4d8 100%);
  --grad-text: linear-gradient(100deg, #4d9fff 0%, #00b4d8 55%, #58e0f5 100%);
  --glow-blue: rgba(0, 82, 204, 0.32);
  --glow-teal: rgba(0, 180, 216, 0.22);

  --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --display: "Space Grotesk", var(--sans);
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;

  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.0625rem);
  --text-hero: clamp(2.6rem, 1.2rem + 5.2vw, 5.1rem);
  --text-h2: clamp(1.9rem, 1.2rem + 2.4vw, 3.1rem);
  --text-h3: clamp(1.15rem, 1rem + 0.5vw, 1.4rem);

  --space-section: clamp(5rem, 3.5rem + 6vw, 10.5rem);
  --radius: 16px;
  --radius-lg: 22px;

  --duration-fast: 160ms;
  --duration: 340ms;
  --duration-slow: 700ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Base ---------- */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

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

::selection {
  background: rgba(0, 180, 216, 0.35);
  color: #fff;
}

h1, h2, h3, h4 {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.028em;
  line-height: 1.08;
  margin: 0;
}

p {
  margin: 0;
}

a {
  color: var(--teal-bright);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

:focus-visible {
  outline: 2px solid var(--teal-bright);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: fixed;
  top: 0.8rem;
  left: 0.8rem;
  z-index: 100;
  padding: 0.65rem 1.1rem;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  background: var(--bg-raise);
  color: var(--text);
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.9rem;
  clip-path: inset(50%);
  overflow: hidden;
  white-space: nowrap;
}

.skip-link:focus-visible {
  clip-path: none;
  overflow: visible;
  text-decoration: none;
}

.shell {
  width: min(1180px, 100% - 3rem);
  margin-inline: auto;
}

.grad-text {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--teal-bright);
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--grad);
  display: inline-block;
}

.section-head {
  max-width: 720px;
  margin-bottom: clamp(2.5rem, 2rem + 2.5vw, 4.5rem);
}

.section-head h2 {
  font-size: var(--text-h2);
  margin-top: 1rem;
}

.section-head .lede {
  margin-top: 1.1rem;
  color: var(--text-dim);
  font-size: 1.05em;
  max-width: 58ch;
}

/* ---------- Atmosphere ---------- */

.backdrop {
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background:
    radial-gradient(900px 520px at 82% -6%, var(--glow-teal), transparent 62%),
    radial-gradient(1100px 640px at -12% 12%, var(--glow-blue), transparent 60%),
    var(--bg);
}

.backdrop::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(140, 178, 224, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(140, 178, 224, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(1200px 720px at 50% -8%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(1200px 720px at 50% -8%, #000 0%, transparent 78%);
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--display);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  padding: 0.78rem 1.5rem;
  border-radius: 12px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out);
  text-decoration: none;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

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

.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 8px 28px -10px rgba(0, 120, 200, 0.55);
}

.btn-primary:hover {
  box-shadow: 0 14px 36px -10px rgba(0, 150, 216, 0.65);
}

.btn-ghost {
  background: var(--panel);
  border-color: var(--line);
  color: var(--text);
}

.btn-ghost:hover {
  border-color: var(--line-strong);
  background: var(--panel-strong);
}

.btn .arrow {
  transition: transform var(--duration-fast) var(--ease-out);
}

.btn:hover .arrow {
  transform: translateX(3px);
}

/* ---------- Header ---------- */

.site-head {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 50;
  transition: background-color var(--duration) var(--ease-out),
    border-color var(--duration) var(--ease-out);
  border-bottom: 1px solid transparent;
}

.site-head.scrolled {
  background: rgba(6, 11, 20, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.site-head .bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text);
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.brand:hover {
  text-decoration: none;
}

.brand .mark {
  display: block;
  width: 30px;
  height: 30px;
}

.brand .suite {
  font-family: var(--mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  color: var(--text-faint);
  text-transform: uppercase;
  margin-left: 0.35rem;
  padding-left: 0.75rem;
  border-left: 1px solid var(--line);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}

.site-nav a {
  color: var(--text-dim);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color var(--duration-fast) var(--ease-out);
}

.site-nav a:hover {
  color: var(--text);
  text-decoration: none;
}

.head-cta {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.head-cta .btn {
  padding: 0.55rem 1.1rem;
  font-size: 0.88rem;
}

@media (max-width: 900px) {
  .site-nav {
    display: none;
  }
}

/* ---------- Footer ---------- */

.site-foot {
  border-top: 1px solid var(--line);
  margin-top: var(--space-section);
  padding: 3rem 0 2.6rem;
}

.foot-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem 4rem;
  justify-content: space-between;
  align-items: flex-start;
}

.foot-brand p {
  margin-top: 0.9rem;
  color: var(--text-faint);
  font-size: 0.85rem;
  max-width: 34ch;
}

.foot-col h4 {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.9rem;
}

.foot-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.foot-col a {
  color: var(--text-dim);
  font-size: 0.9rem;
}

.foot-col a:hover {
  color: var(--text);
}

.foot-legal {
  margin-top: 2.6rem;
  padding-top: 1.4rem;
  border-top: 1px solid rgba(140, 178, 224, 0.08);
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 2rem;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--text-faint);
}

/* ---------- Scroll reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity var(--duration-slow) var(--ease-out),
    transform var(--duration-slow) var(--ease-out);
}

.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

.reveal[data-delay="1"] { transition-delay: 90ms; }
.reveal[data-delay="2"] { transition-delay: 180ms; }
.reveal[data-delay="3"] { transition-delay: 270ms; }


/* ---------- Reduced motion (shared) ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .btn {
    transition: none;
  }
  .btn:hover {
    transform: none;
  }
}