/* ============================================================
   VELA SYSTEMS — Design System
   Space-tech SaaS: dark, electric, minimal
   ============================================================ */

/* ── Tokens ── */
:root {
  --void:       #07080F;
  --space:      #0C0E1A;
  --nebula:     #111525;
  --surface:    #161B2E;
  --electric:   #4C8EF5;
  --electric-hi:#6AABFF;
  --cyan:       #00C8E8;
  --violet:     #7B5FFF;
  --star:       #EEF2FF;
  --muted:      #7A82A0;
  --rule:       rgba(255,255,255,0.08);

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;

  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   clamp(1.25rem, 2vw, 1.5rem);
  --text-2xl:  clamp(1.5rem, 3vw, 2.25rem);
  --text-3xl:  clamp(2rem, 5vw, 3.5rem);
  --text-hero: clamp(2.75rem, 8vw, 6rem);

  --space-xs:  0.375rem;
  --space-sm:  0.75rem;
  --space-md:  1.25rem;
  --space-lg:  2rem;
  --space-xl:  3rem;
  --space-2xl: 4.5rem;
  --space-3xl: 7rem;
  --space-4xl: 10rem;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition: 0.3s var(--ease-out);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--void);
  color: var(--star);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── Custom cursor ── */
.cursor-dot, .cursor-ring {
  position: fixed; top: 0; left: 0;
  border-radius: 50%; pointer-events: none;
  transform: translate(-50%, -50%);
  z-index: 9999;
  transition-property: width, height, border-color, background;
  transition-duration: 0.25s;
  transition-timing-function: var(--ease-out);
}
.cursor-dot  { width: 6px; height: 6px; background: var(--cyan); }
.cursor-ring { width: 34px; height: 34px; border: 1.5px solid rgba(0,200,232,0.5); background: transparent; }
.cursor-ring.is-hovered { width: 54px; height: 54px; border-color: var(--electric); }
body:has(.cursor-dot) { cursor: none; }

/* ── Container ── */
.container { width: 100%; max-width: 1200px; margin-inline: auto; padding-inline: clamp(1.25rem, 5vw, 3rem); }

/* ── Visually hidden ── */
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-family: var(--font-body); font-size: var(--text-sm); font-weight: 500; letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  border: 1.5px solid transparent;
  cursor: pointer; transition: var(--transition);
  white-space: nowrap;
}
.btn--primary {
  background: var(--electric);
  color: #fff;
  border-color: var(--electric);
}
.btn--primary:hover {
  background: var(--electric-hi);
  border-color: var(--electric-hi);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(76,142,245,0.35);
}
.btn--ghost {
  background: transparent;
  color: var(--star);
  border-color: var(--rule);
}
.btn--ghost:hover { border-color: rgba(255,255,255,0.3); background: rgba(255,255,255,0.05); }

/* ── Reveal animation ── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out); }
.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: 0.35s; }
.reveal.delay-4 { transition-delay: 0.5s; }

/* ============================================================
   NAV
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding-block: 1.125rem;
  border-bottom: 1px solid transparent;
  transition: background 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}
.nav.scrolled {
  background: rgba(7,8,15,0.88);
  backdrop-filter: blur(20px) saturate(160%);
  border-bottom-color: var(--rule);
  box-shadow: 0 1px 32px rgba(0,0,0,0.5);
}
.nav__inner {
  display: flex; align-items: center; gap: var(--space-xl);
}
.nav__logo {
  display: flex; align-items: center; gap: 0.625rem;
  font-family: var(--font-display); font-size: var(--text-sm); font-weight: 500; letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--star);
  flex-shrink: 0;
}
.nav__logo-mark svg { width: 22px; height: 22px; }
.nav__logo span { color: var(--muted); }
.nav__links { display: flex; gap: var(--space-xl); align-items: center; margin-left: auto; }
.nav__links a {
  font-size: var(--text-sm); color: var(--muted);
  transition: color var(--transition);
  position: relative;
}
.nav__links a::after {
  content: ''; position: absolute; bottom: -3px; left: 0; right: 0;
  height: 1px; background: var(--electric);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.3s var(--ease-out);
}
.nav__links a:hover { color: var(--star); }
.nav__links a:hover::after { transform: scaleX(1); }
.nav__cta { margin-left: var(--space-md); }
.nav__hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav__hamburger span { display: block; width: 22px; height: 1.5px; background: var(--star); transition: var(--transition); }
.nav__hamburger.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__hamburger.is-open span:nth-child(2) { opacity: 0; }
.nav__hamburger.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.nav__drawer {
  display: none; flex-direction: column; gap: var(--space-md);
  padding: var(--space-lg) var(--space-lg);
  background: var(--space);
  border-top: 1px solid var(--rule);
}
.nav__drawer.is-open { display: flex; }
.nav__drawer-links { display: flex; flex-direction: column; gap: var(--space-md); }
.nav__drawer-links a { font-size: var(--text-lg); color: var(--star); }

@media (max-width: 768px) {
  .nav__links, .nav__cta { display: none; }
  .nav__hamburger { display: flex; margin-left: auto; }
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; align-items: center;
  overflow: hidden;
  padding-top: 6rem;
}

/* Star-field grid */
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.55) 1px, transparent 1px),
    radial-gradient(circle, rgba(255,255,255,0.2) 1px, transparent 1px);
  background-size: 80px 80px, 40px 40px;
  background-position: 0 0, 20px 20px;
  opacity: 0.18;
  pointer-events: none;
}

/* Nebula glow */
.hero::after {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 60% 30%, rgba(76,142,245,0.18) 0%, transparent 65%),
    radial-gradient(ellipse 60% 50% at 20% 70%, rgba(123,95,255,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 100% 100% at 50% 50%, var(--void) 50%, transparent 100%);
  pointer-events: none;
}

.hero__inner {
  position: relative; z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
  padding-block: var(--space-4xl) var(--space-3xl);
}

.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 0.625rem;
  font-family: var(--font-body); font-size: var(--text-xs);
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: var(--space-md);
}
.hero__eyebrow-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--cyan);
  animation: pulse 2s ease infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.5; transform: scale(1.5); }
}

.hero__headline {
  font-family: var(--font-display);
  font-size: var(--text-hero);
  font-weight: 600;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--star);
  margin-bottom: var(--space-lg);
}
.hero__headline span {
  display: block;
  background: linear-gradient(135deg, var(--electric) 0%, var(--cyan) 60%, var(--violet) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subline {
  font-size: var(--text-lg);
  color: var(--muted);
  line-height: 1.7;
  max-width: 420px;
  margin-bottom: var(--space-xl);
}

.hero__actions { display: flex; gap: var(--space-md); flex-wrap: wrap; }

.hero__visual {
  position: relative;
  display: flex; align-items: center; justify-content: center;
}

.hero__orb {
  position: relative;
  width: clamp(280px, 40vw, 480px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%,
    rgba(76,142,245,0.25) 0%,
    rgba(123,95,255,0.15) 40%,
    rgba(0,200,232,0.08) 70%,
    transparent 100%);
  border: 1px solid rgba(76,142,245,0.2);
}
.hero__orb::before {
  content: '';
  position: absolute; inset: 16px;
  border-radius: 50%;
  border: 1px solid rgba(76,142,245,0.12);
}
.hero__orb::after {
  content: '';
  position: absolute; inset: 40px;
  border-radius: 50%;
  border: 1px dashed rgba(0,200,232,0.15);
  animation: spin 24s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.hero__orb-inner {
  position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
}
.hero__orb-inner svg {
  width: 40%;
  opacity: 0.6;
}

.hero__orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(76,142,245,0.15);
  animation: spin var(--dur, 18s) linear infinite;
}
.hero__orbit::after {
  content: '';
  position: absolute;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color, var(--electric));
  top: -4px; left: 50%; transform: translateX(-50%);
}
.hero__orbit--1 { inset: -40px; --dur: 18s; --color: var(--electric); }
.hero__orbit--2 { inset: -80px; --dur: 28s; --color: var(--cyan); animation-direction: reverse; }
.hero__orbit--3 { inset: -120px; --dur: 40s; --color: var(--violet); }

@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; text-align: center; }
  .hero__subline { max-width: 100%; margin-inline: auto; }
  .hero__actions { justify-content: center; }
  .hero__visual { display: none; }
}

/* ============================================================
   STATS BAR
   ============================================================ */
.stats {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding-block: var(--space-xl);
  background: var(--space);
}
.stats__inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}
.stat { text-align: center; }
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--electric), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
  margin-bottom: var(--space-xs);
}
.stat-label {
  font-size: var(--text-sm); color: var(--muted);
}

@media (max-width: 640px) {
  .stats__inner { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   PRODUCT — CAPABILITIES
   ============================================================ */
.capabilities { padding-block: var(--space-4xl); }

.section-header { margin-bottom: var(--space-2xl); }
.section-eyebrow {
  display: inline-flex; align-items: center; gap: 0.625rem;
  font-size: var(--text-xs); letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--electric);
  margin-bottom: var(--space-md);
}
.section-eyebrow-line {
  display: block; width: 32px; height: 1px;
  background: linear-gradient(90deg, var(--electric), transparent);
}
.section-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--star);
}
.section-title span { color: var(--muted); font-weight: 300; }

.capabilities__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.cap-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  padding: var(--space-xl) var(--space-lg);
  transition: border-color var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}
.cap-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--electric), var(--cyan));
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.4s var(--ease-out);
}
.cap-card:hover { border-color: rgba(76,142,245,0.3); transform: translateY(-3px); }
.cap-card:hover::before { transform: scaleX(1); }

.cap-card__icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(76,142,245,0.1);
  border: 1px solid rgba(76,142,245,0.2);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: var(--space-lg);
  color: var(--electric);
}
.cap-card__icon svg { width: 20px; height: 20px; }
.cap-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--star);
  margin-bottom: var(--space-sm);
}
.cap-card__desc { font-size: var(--text-sm); color: var(--muted); line-height: 1.7; }

@media (max-width: 900px) { .capabilities__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .capabilities__grid { grid-template-columns: 1fr; } }

/* ============================================================
   HOW IT WORKS
   ============================================================ */
.how {
  padding-block: var(--space-4xl);
  background: var(--space);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.how__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.how__steps { display: flex; flex-direction: column; gap: 0; }

.how__step {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: var(--space-lg);
  padding-block: var(--space-lg);
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.how__step:last-child { border-bottom: none; }

.how__step-num {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--electric);
  letter-spacing: 0.06em;
  padding-top: 2px;
}
.how__step-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--star);
  margin-bottom: var(--space-xs);
}
.how__step-desc { font-size: var(--text-sm); color: var(--muted); line-height: 1.7; }

.how__visual {
  position: relative;
  height: 420px;
  border-radius: var(--radius-lg);
  background: var(--nebula);
  border: 1px solid var(--rule);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
}
.how__visual::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 70% at 50% 30%, rgba(76,142,245,0.12) 0%, transparent 70%),
    linear-gradient(180deg, transparent 0%, var(--void) 100%);
  pointer-events: none;
}
.how__visual-label {
  position: relative; z-index: 1;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  color: var(--muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

@media (max-width: 900px) { .how__inner { grid-template-columns: 1fr; } .how__visual { height: 260px; } }

/* ============================================================
   INTERLUDE / PULL QUOTE
   ============================================================ */
.interlude {
  padding-block: var(--space-4xl);
  background: linear-gradient(135deg, var(--nebula) 0%, var(--space) 100%);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  text-align: center;
}
.interlude__quote {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--star);
  max-width: 760px;
  margin-inline: auto;
  margin-bottom: var(--space-lg);
}
.interlude__quote span {
  background: linear-gradient(135deg, var(--electric), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.interlude__source {
  font-size: var(--text-sm); color: var(--muted); letter-spacing: 0.06em;
}

/* ============================================================
   INTEGRATIONS / PARTNERS
   ============================================================ */
.integrations { padding-block: var(--space-4xl); }
.integrations .section-header { text-align: center; }
.integrations__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-2xl);
}
.integration-card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: var(--radius-md);
  padding: var(--space-xl) var(--space-lg);
  display: flex; flex-direction: column; gap: var(--space-md);
  transition: border-color var(--transition);
}
.integration-card:hover { border-color: rgba(76,142,245,0.25); }
.integration-card__header {
  display: flex; align-items: center; gap: var(--space-sm);
}
.integration-card__icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-sm);
  background: rgba(0,200,232,0.08);
  border: 1px solid rgba(0,200,232,0.15);
  display: flex; align-items: center; justify-content: center;
  color: var(--cyan);
  flex-shrink: 0;
}
.integration-card__icon svg { width: 18px; height: 18px; }
.integration-card__name {
  font-family: var(--font-display); font-weight: 600;
  font-size: var(--text-base); color: var(--star);
}
.integration-card__tag {
  font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--cyan); background: rgba(0,200,232,0.1);
  border: 1px solid rgba(0,200,232,0.2);
  padding: 2px 8px; border-radius: 999px;
  margin-left: auto;
}
.integration-card__desc { font-size: var(--text-sm); color: var(--muted); line-height: 1.65; }

@media (max-width: 900px) { .integrations__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 600px) { .integrations__grid { grid-template-columns: 1fr; } }

/* ============================================================
   CTA BAND
   ============================================================ */
.cta-band {
  padding-block: var(--space-4xl);
  background: var(--nebula);
  border-top: 1px solid var(--rule);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 80% at 50% 0%, rgba(76,142,245,0.1) 0%, transparent 70%);
  pointer-events: none;
}
.cta-band__inner { position: relative; z-index: 1; max-width: 640px; margin-inline: auto; }
.cta-band__eyebrow {
  font-size: var(--text-xs); letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--electric); margin-bottom: var(--space-md);
}
.cta-band__headline {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 600; letter-spacing: -0.02em; line-height: 1.1;
  color: var(--star);
  margin-bottom: var(--space-lg);
}
.cta-band__headline span {
  background: linear-gradient(135deg, var(--electric), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.cta-band__sub {
  font-size: var(--text-base); color: var(--muted); line-height: 1.65;
  margin-bottom: var(--space-xl);
}
.cta-band__actions { display: flex; gap: var(--space-md); justify-content: center; flex-wrap: wrap; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--space);
  border-top: 1px solid var(--rule);
  padding-block: var(--space-2xl);
}
.footer__inner {
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap;
  gap: var(--space-md);
}
.footer__logo {
  font-family: var(--font-display); font-size: var(--text-sm); font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--star);
}
.footer__logo span { color: var(--muted); }
.footer__copy { font-size: var(--text-xs); color: var(--muted); }
.footer__links { display: flex; gap: var(--space-lg); }
.footer__links a { font-size: var(--text-xs); color: var(--muted); transition: color var(--transition); }
.footer__links a:hover { color: var(--star); }

@media (max-width: 600px) {
  .footer__inner { flex-direction: column; text-align: center; }
}

/* ============================================================
   BREADCRUMB
   ============================================================ */
.breadcrumb {
  padding-top: 6rem; padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--rule);
}
.breadcrumb__inner {
  display: flex; align-items: center; gap: var(--space-sm);
  font-size: var(--text-xs); color: var(--muted); letter-spacing: 0.06em;
}
.breadcrumb__inner a { color: var(--muted); transition: color var(--transition); }
.breadcrumb__inner a:hover { color: var(--star); }
.breadcrumb__sep { opacity: 0.4; }
.breadcrumb__current { color: var(--electric); }