@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;700&family=JetBrains+Mono:wght@400;500&family=Inter:wght@400;500&display=swap');

/* ============================================================
   AcceleRAD — Brand Design System
   Lab-noir: near-black base, Beam Cyan + Copper accents
   ============================================================ */

:root {
  --graphite:     #0B0E11;
  --carbon:       #14181C;
  --steel:        #2A3138;
  --beam:         #2BD4FF;
  --beam-deep:    #0094FF;
  --copper:       #C77B3B;
  --copper-glow:  #E89A4F;
  --signal:       #F2F4F7;
  --muted:        #8D97A2;

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, monospace;
  --font-body:    'Inter', system-ui, sans-serif;

  --radius:       4px;
  --max-w:        1280px;
  --transition:   cubic-bezier(.2,.7,.2,1);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--graphite);
  color: var(--signal);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
}

img { display: block; max-width: 100%; }
a { color: var(--beam-deep); text-decoration: none; }
a:hover { color: var(--beam); }

/* ============================================================
   NAVIGATION
   ============================================================ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(24px, 5vw, 60px);
  height: 68px;
  background: rgba(11,14,17,0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--steel);
}

.nav-logo {
  display: flex;
  flex-direction: column;
  gap: 1px;
  text-decoration: none;
}

.nav-logo-wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.08em;
  color: var(--signal);
  text-transform: uppercase;
  line-height: 1;
  /* Beam line accent under the wordmark */
  background: linear-gradient(to right, var(--beam) 100%, transparent 100%);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: bottom left;
  padding-bottom: 3px;
}

.nav-logo-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.02em;
  transition: color 0.15s var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--signal);
}

.nav-cta {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--graphite) !important;
  background: var(--beam);
  padding: 9px 20px;
  border-radius: var(--radius);
  box-shadow: 0 0 16px rgba(43,212,255,0.28);
  transition: background 0.15s var(--transition), box-shadow 0.15s var(--transition);
}

.nav-cta:hover {
  background: #4DDDFF;
  box-shadow: 0 0 24px rgba(43,212,255,0.45);
  color: var(--graphite) !important;
}

/* ============================================================
   LAYOUT
   ============================================================ */

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 clamp(24px, 5vw, 60px);
}

section {
  padding: 100px 0;
}

/* ============================================================
   EYEBROW / LABELS
   ============================================================ */

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--beam);
  margin-bottom: 24px;
}

.eyebrow.muted { color: var(--muted); }

/* ============================================================
   BEAM DIVIDER
   ============================================================ */

.beam-divider {
  position: relative;
  height: 1px;
  margin: 0;
  overflow: hidden;
}

.beam-divider::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  height: 1px;
  width: 100%;
  background: linear-gradient(to right, transparent 0%, var(--beam) 40%, var(--beam) 60%, transparent 100%);
  box-shadow: 0 0 12px rgba(43,212,255,0.6);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.8s var(--transition);
}

.beam-divider.animated::before {
  transform: scaleX(1);
}

/* ============================================================
   HEADINGS
   ============================================================ */

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--signal);
}

h1 { font-size: clamp(48px, 6vw, 80px); font-weight: 700; }
h2 { font-size: clamp(32px, 4vw, 52px); font-weight: 700; }
h3 { font-size: clamp(20px, 2.5vw, 28px); font-weight: 500; }

.display-xl {
  font-size: clamp(56px, 8vw, 96px);
  font-weight: 700;
  letter-spacing: -0.03em;
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 14px 28px;
  border-radius: var(--radius);
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.2s var(--transition);
}

.btn-primary {
  background: var(--beam);
  color: var(--graphite);
  box-shadow: 0 0 20px rgba(43,212,255,0.3);
}

.btn-primary:hover {
  background: #4DDDFF;
  color: var(--graphite);
  box-shadow: 0 0 32px rgba(43,212,255,0.5);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--signal);
  border: 1px solid var(--steel);
}

.btn-ghost:hover {
  border-color: var(--beam);
  color: var(--beam);
  box-shadow: 0 0 12px rgba(43,212,255,0.15);
}

/* ============================================================
   CARDS
   ============================================================ */

.card {
  background: var(--carbon);
  border: 1px solid var(--steel);
  border-radius: var(--radius);
  padding: 32px;
  transition: border-color 0.2s var(--transition), box-shadow 0.2s var(--transition);
}

.card:hover {
  border-color: var(--beam);
  box-shadow: 0 0 20px rgba(43,212,255,0.12), inset 0 0 20px rgba(43,212,255,0.03);
}

.card-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--signal);
  margin-bottom: 10px;
}

.card-body {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.6;
}

.card-spec {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--copper);
  text-transform: uppercase;
  margin-top: 16px;
}

/* ============================================================
   CAPABILITY CHIPS
   ============================================================ */

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.chip {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--carbon);
  border: 1px solid var(--steel);
  padding: 8px 16px;
  border-radius: 2px;
  transition: border-color 0.15s, color 0.15s;
}

.chip:hover {
  border-color: var(--copper);
  color: var(--copper-glow);
}

/* ============================================================
   STAT STRIP
   ============================================================ */

.stat-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-top: 1px solid var(--steel);
  border-bottom: 1px solid var(--steel);
  margin-top: 48px;
}

.stat-item {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 14px 28px;
  border-right: 1px solid var(--steel);
}

.stat-item:first-child { padding-left: 0; }
.stat-item:last-child { border-right: none; }

/* ============================================================
   BIG STAT
   ============================================================ */

.big-stat-number {
  font-family: var(--font-display);
  font-size: clamp(48px, 6vw, 72px);
  font-weight: 700;
  color: var(--beam);
  line-height: 1;
}

.big-stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 8px;
}

/* ============================================================
   PROCESS RAIL
   ============================================================ */

.process-rail {
  display: grid;
  gap: 0;
  border: 1px solid var(--steel);
  border-radius: var(--radius);
  overflow: hidden;
}

.process-step {
  display: flex;
  align-items: flex-start;
  gap: 28px;
  padding: 28px 32px;
  border-bottom: 1px solid var(--steel);
  transition: background 0.15s var(--transition);
}

.process-step:last-child { border-bottom: none; }

.process-step:hover { background: rgba(43,212,255,0.03); }

.process-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--beam);
  letter-spacing: 0.08em;
  min-width: 32px;
  padding-top: 2px;
}

.process-title {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--signal);
  margin-bottom: 4px;
}

.process-desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.5;
}

/* ============================================================
   CTA BAND
   ============================================================ */

.cta-band {
  background: var(--carbon);
  border-top: 1px solid var(--steel);
  border-bottom: 1px solid var(--steel);
  padding: 80px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 60% at 50% 50%, rgba(43,212,255,0.06) 0%, transparent 70%);
  pointer-events: none;
}

/* ============================================================
   FOOTER
   ============================================================ */

footer {
  background: var(--carbon);
  border-top: 1px solid var(--steel);
  padding: 60px 0 40px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-logo-wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--signal);
  text-transform: uppercase;
}

.footer-logo-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
  margin-top: 4px;
}

.footer-nav-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
}

.footer-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav-links a {
  font-size: 14px;
  color: var(--muted);
  transition: color 0.15s;
}

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

.footer-contact-item {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-bottom: 8px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  border-top: 1px solid var(--steel);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-cert {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.footer-copy {
  font-size: 13px;
  color: var(--muted);
}

/* ============================================================
   HERO BASE STYLES
   ============================================================ */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 68px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(11,14,17,0.92) 0%,
    rgba(11,14,17,0.75) 60%,
    rgba(11,14,17,0.88) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}

.hero-subhead {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.65;
  margin: 20px 0 36px;
  max-width: 600px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ============================================================
   PAGE HERO (inner pages)
   ============================================================ */

.page-hero {
  padding-top: 140px;
  padding-bottom: 80px;
}

.page-hero-subhead {
  font-size: 18px;
  color: var(--muted);
  line-height: 1.65;
  margin-top: 20px;
  max-width: 640px;
}

/* ============================================================
   GRID UTILITIES
   ============================================================ */

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ============================================================
   COPPER ACCENT BLOCK
   ============================================================ */

.copper-block {
  border-left: 2px solid var(--copper);
  padding-left: 20px;
}

/* ============================================================
   FORM STYLES
   ============================================================ */

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--carbon);
  border: 1px solid var(--steel);
  color: var(--signal);
  font-family: var(--font-body);
  font-size: 15px;
  padding: 12px 16px;
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.15s var(--transition), box-shadow 0.15s var(--transition);
  appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--beam);
  box-shadow: 0 0 0 2px rgba(43,212,255,0.12);
}

.form-input::placeholder,
.form-textarea::placeholder { color: var(--muted); opacity: 0.6; }

.form-textarea { resize: vertical; min-height: 140px; }

.form-select option { background: var(--carbon); }

/* ============================================================
   MINI-FACT CARDS
   ============================================================ */

.fact-card {
  background: var(--carbon);
  border: 1px solid var(--steel);
  border-radius: var(--radius);
  padding: 24px 28px;
}

.fact-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}

.fact-value {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--signal);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav { padding: 0 24px; }
  section { padding: 72px 0; }
  .footer-top { grid-template-columns: 1fr; gap: 32px; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .stat-item { padding: 12px 16px; font-size: 10px; }
  .hero-content { max-width: 100%; }
}

/* ============================================================
   SCROLL ANIMATION TRIGGERS
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s var(--transition), transform 0.6s var(--transition);
}

.reveal.visible {
  opacity: 1;
  transform: none;
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }