/* ============================================================
   VELION — landing page styles
   Dark, utilitarian, industrial. Amber = the extraction siren.
   ============================================================ */

:root {
  /* base surfaces — near-black, cool steel */
  --bg:        #0a0b0d;
  --bg-2:      #0e1013;
  --panel:     #121519;
  --panel-2:   #161a1f;
  --line:      #23282f;
  --line-soft: #1a1e24;

  /* text */
  --text:      #e7ebef;
  --muted:     #99a2ad;
  --muted-2:   #6b747f;

  /* accent — extraction-siren amber + a colder support tone */
  --amber:     #ff7a2f;
  --amber-2:   #ffab5e;
  --amber-dim: rgba(255, 122, 47, 0.14);
  --steel:     #5b7f9c;

  --maxw: 1180px;
  --radius: 4px;
  --ease: cubic-bezier(.2, .7, .2, 1);

  --font-display: "Chakra Petch", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

/* ---------- ambient backdrop ---------- */
.backdrop {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1100px 640px at 50% -8%, rgba(255,122,47,0.10), transparent 60%),
    radial-gradient(900px 700px at 88% 12%, rgba(91,127,156,0.08), transparent 62%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 40%, var(--bg) 100%);
}
.backdrop::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 20%, transparent 75%);
          mask-image: radial-gradient(120% 90% at 50% 0%, #000 20%, transparent 75%);
  opacity: .5;
}

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 18px clamp(20px, 5vw, 56px);
  transition: padding .25s var(--ease), background .25s var(--ease), border-color .25s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  padding-top: 12px;
  padding-bottom: 12px;
  background: rgba(10, 11, 13, 0.82);
  backdrop-filter: blur(10px);
  border-bottom-color: var(--line);
}

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { color: var(--amber); display: inline-flex; }
.brand-word {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: .26em;
  font-size: 19px;
}

.nav-links {
  display: flex;
  gap: 30px;
  margin-left: auto;
  font-size: 14px;
  letter-spacing: .04em;
}
.nav-links a { color: var(--muted); transition: color .18s var(--ease); }
.nav-links a:hover { color: var(--text); }

.nav-cta { margin-left: 8px; }

@media (max-width: 780px) {
  .nav-links { display: none; }
  .nav-cta { margin-left: auto; }
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 12px 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .16s var(--ease), background .18s var(--ease),
              border-color .18s var(--ease), box-shadow .18s var(--ease), color .18s var(--ease);
}
.btn-primary {
  background: var(--amber);
  color: #17110b;
  box-shadow: 0 0 0 1px rgba(255,122,47,.4), 0 10px 34px -12px rgba(255,122,47,.6);
}
.btn-primary:hover { background: var(--amber-2); transform: translateY(-2px); }
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line);
}
.btn-ghost:hover { border-color: var(--amber); color: var(--amber-2); transform: translateY(-2px); }

.btn .soon {
  font-size: 10px;
  letter-spacing: .12em;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(0,0,0,.22);
  color: inherit;
  opacity: .8;
}
.btn[aria-disabled="true"] { opacity: .82; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: min(92vh, 860px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 60px clamp(20px, 5vw, 56px) 90px;
  max-width: var(--maxw);
  margin: 0 auto;
}
.hero-inner { max-width: 760px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 22px;
}
.eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px var(--amber-dim);
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px var(--amber-dim); }
  50%      { box-shadow: 0 0 0 8px rgba(255,122,47,0.04); }
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(64px, 15vw, 168px);
  line-height: .92;
  letter-spacing: .04em;
  margin: 0 0 18px;
  background: linear-gradient(180deg, #ffffff 0%, #c6ccd3 58%, #7c8794 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 60px rgba(255,122,47,.08);
}
.hero-tag {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.6vw, 26px);
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--amber-2);
  margin: 0 0 22px;
}
.hero-sub {
  font-size: clamp(16px, 1.9vw, 19px);
  color: var(--muted);
  max-width: 620px;
  margin: 0 0 34px;
}
.hero-sub strong { color: var(--text); font-weight: 600; }

.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 30px; }

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 12.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted-2);
}
.hero-meta .sep { color: var(--line); }
.hero-meta .status { color: var(--amber); }

.scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 26px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted-2);
  animation: bob 2.2s var(--ease) infinite;
}
@keyframes bob { 0%,100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 7px); } }

/* ---------- sections ---------- */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(64px, 10vw, 128px) clamp(20px, 5vw, 56px);
  border-top: 1px solid var(--line-soft);
}
.section-head { max-width: 720px; margin-bottom: 52px; }
.kicker {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0 0 14px;
}
.section-head h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(28px, 4.4vw, 46px);
  line-height: 1.08;
  letter-spacing: .01em;
  margin: 0;
}

.prose { max-width: 760px; }
.prose p { color: var(--muted); font-size: clamp(16px, 1.9vw, 19px); margin: 0 0 20px; }
.prose strong { color: var(--text); }
.prose em { color: var(--amber-2); font-style: normal; }

/* ---------- core loop ---------- */
.loop {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.loop-step {
  position: relative;
  padding: 28px 22px 26px;
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.loop-step::after {
  content: "";
  position: absolute;
  left: 0; top: 0;
  width: 3px; height: 100%;
  background: linear-gradient(180deg, var(--amber), transparent);
  opacity: .0;
  transition: opacity .3s var(--ease);
}
.loop-step:hover::after { opacity: 1; }
.loop-num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 34px;
  color: var(--amber);
  opacity: .55;
  display: block;
  margin-bottom: 8px;
}
.loop-step h3 {
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: .02em;
  margin: 0 0 8px;
}
.loop-step p { color: var(--muted); font-size: 15px; margin: 0; }

@media (max-width: 900px) { .loop { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 520px) { .loop { grid-template-columns: 1fr; } }

.loop-intro { margin-bottom: 40px; }

/* shared sub-heading inside a section */
.subhead {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(19px, 2.6vw, 25px);
  letter-spacing: .02em;
  color: var(--text);
  margin: 60px 0 30px;
}

/* ---------- match timeline ---------- */
.timeline { list-style: none; margin: 0; padding: 0; max-width: 720px; }
.tl-item { display: flex; gap: 22px; }
.tl-time {
  flex: 0 0 52px;
  text-align: right;
  padding-top: 2px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .03em;
  color: var(--amber);
}
.tl-body {
  position: relative;
  border-left: 2px solid var(--line);
  padding: 0 0 30px 28px;
}
.tl-item:last-child .tl-body { padding-bottom: 4px; }
.tl-body::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 3px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--amber);
  box-shadow: 0 0 0 4px rgba(255,122,47,.08);
}
.tl-end .tl-body::before { background: var(--amber); }
.tl-body h4 {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: .02em;
  margin: 0 0 5px;
  color: var(--text);
}
.tl-body p { color: var(--muted); font-size: 15px; margin: 0; }

/* ---------- feature grid ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.card {
  padding: 30px 26px;
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(255,122,47,.45);
  box-shadow: 0 18px 44px -24px rgba(255,122,47,.5);
}
.card-icon {
  font-size: 26px;
  color: var(--amber);
  line-height: 1;
  margin-bottom: 16px;
}
.card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: .01em;
  margin: 0 0 10px;
}
.card p { color: var(--muted); font-size: 15.5px; margin: 0; }

@media (max-width: 900px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }

/* ---------- launch MVP spec grid ---------- */
.lede {
  color: var(--muted);
  font-size: clamp(16px, 1.9vw, 18px);
  max-width: 660px;
  margin: 20px 0 0;
}
.mvp-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.spec {
  padding: 26px 26px 24px;
  background: linear-gradient(180deg, var(--panel), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .2s var(--ease);
}
.spec:hover { border-color: rgba(255,122,47,.35); }
.spec h3 {
  display: flex;
  align-items: baseline;
  gap: 11px;
  font-family: var(--font-display);
  font-size: 18px;
  letter-spacing: .02em;
  margin: 0 0 15px;
  padding-bottom: 13px;
  border-bottom: 1px solid var(--line-soft);
}
.spec-no {
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--amber);
  opacity: .85;
}
.spec ul { list-style: none; margin: 0; padding: 0; }
.spec li {
  position: relative;
  padding-left: 18px;
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.5;
}
.spec li:last-child { margin-bottom: 0; }
.spec li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--amber);
  opacity: .75;
  transform: rotate(45deg);
}
.spec strong { color: var(--text); font-weight: 600; }

/* the "left out" card reads as a counterpoint */
.spec-omit {
  background: linear-gradient(180deg, #14100b, #0d0a07);
  border-color: rgba(255,122,47,.22);
}
.omit-lede { color: var(--muted); font-size: 15px; margin: 0 0 13px; }
.omit-lede em { color: var(--amber-2); font-style: normal; }
.omit-list li::before { background: var(--muted-2); opacity: .55; }

.mvp-note {
  text-align: center;
  color: var(--muted-2);
  font-size: 13px;
  margin: 28px auto 0;
}

@media (max-width: 720px) { .mvp-grid { grid-template-columns: 1fr; } }

/* ---------- statement band ---------- */
.statement {
  text-align: center;
  padding: clamp(72px, 12vw, 140px) 24px;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(700px 300px at 50% 50%, var(--amber-dim), transparent 70%);
}
.statement-line {
  font-family: var(--font-display);
  font-size: clamp(16px, 2.4vw, 22px);
  letter-spacing: .04em;
  color: var(--muted);
  margin: 0 0 6px;
}
.statement-big {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 6vw, 60px);
  letter-spacing: .02em;
  margin: 18px 0 0;
  color: var(--text);
  text-shadow: 0 0 44px rgba(255,122,47,.16);
}

/* ---------- pillars ---------- */
.pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.pillar {
  position: relative;
  padding: 28px 26px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.pillar-tag {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .1em;
  color: #17110b;
  background: var(--amber);
  padding: 3px 9px;
  border-radius: 3px;
}
.pillar h3 {
  font-family: var(--font-display);
  font-size: 21px;
  margin: 16px 0 8px;
  letter-spacing: .01em;
}
.pillar p { color: var(--muted); font-size: 15.5px; margin: 0; }

.pillars-test {
  text-align: center;
  color: var(--muted);
  margin: 40px auto 0;
  max-width: 640px;
  font-size: clamp(16px, 2vw, 19px);
}
.pillars-test strong { color: var(--amber-2); font-weight: 600; }

@media (max-width: 640px) { .pillars { grid-template-columns: 1fr; } }

/* ---------- CTA band ---------- */
.cta-band {
  max-width: var(--maxw);
  margin: 0 auto;
  text-align: center;
  padding: clamp(72px, 11vw, 130px) clamp(20px, 5vw, 56px);
}
.cta-band h2 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(26px, 4.4vw, 44px);
  margin: 0 0 14px;
  letter-spacing: .01em;
}
.cta-band > p { color: var(--muted); margin: 0 auto 30px; max-width: 520px; }
.cta-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 14px; }
.cta-note { color: var(--muted-2); font-size: 13px; margin-top: 22px; }

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  padding: 48px clamp(20px, 5vw, 56px) 40px;
  max-width: var(--maxw);
  margin: 0 auto;
}
.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line-soft);
}
.footer-tag {
  font-family: var(--font-display);
  color: var(--muted);
  letter-spacing: .04em;
  margin: 0;
  font-size: 14px;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  padding-top: 22px;
  color: var(--muted-2);
  font-size: 13px;
}
.footer-bottom p { margin: 0; }
.footer-disclaimer { color: var(--muted-2); opacity: .8; }

/* ---------- scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
/* stagger children a touch */
.loop-step.reveal { transition-delay: .04s; }
.card.reveal   { transition-delay: .04s; }
.pillar.reveal { transition-delay: .04s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .eyebrow .dot, .scroll-hint { animation: none; }
}