/* ============================================================
   Sparkinect — Design System (DARK)
   Immersive near-black canvas, amber-gold accents, editorial
   serif display. Mirrors maze's particle aesthetic.
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  /* Surfaces (warm near-black) */
  --bg:         #0B0907;
  --bg-2:       #100C09;
  --bg-warm:    #0E0A07;
  --surface:    #15110C;
  --surface-2:  #1C1711;
  --panel:      #110D0A;   /* deepest panels: footer / dark cards */
  --line:       rgba(255,247,235,.09);
  --line-2:     rgba(255,247,235,.16);

  /* Text */
  --text:       #F4EEE3;   /* warm off-white */
  --text-soft:  #D8D0C2;
  --muted:      #9C9486;
  --muted-2:    #6B655B;
  --ink:        #0B0907;   /* legacy alias = darkest (used as button text on light) */

  /* Amber-gold system */
  --amber:      #FF8A1E;
  --amber-600:  #FF7A12;
  --amber-700:  #E8650A;
  --amber-300:  #FFB45C;
  --amber-100:  #FFD9A8;
  --gold:       #FFC76B;
  --amber-tint: rgba(255,138,30,.14);
  --amber-glow: rgba(255,138,30,.45);

  /* Effects */
  --grad-amber: linear-gradient(120deg, #FFC76B 0%, #FF8A1E 48%, #E8650A 100%);
  --grad-warm:  linear-gradient(180deg, #16110C 0%, #0E0A07 100%);
  --shadow-sm:  0 1px 2px rgba(0,0,0,.4);
  --shadow-md:  0 18px 44px -20px rgba(0,0,0,.7);
  --shadow-lg:  0 40px 90px -36px rgba(0,0,0,.8);
  --shadow-amber: 0 18px 50px -16px rgba(255,122,18,.5);

  /* Type */
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --serif: "Newsreader", Georgia, "Times New Roman", serif;

  /* Layout */
  --maxw: 1240px;
  --gut: clamp(20px, 5vw, 64px);
  --radius: 16px;
  --radius-lg: 26px;
  --radius-pill: 999px;
  --nav-h: 76px;
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset ---------- */
*,*::before,*::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img,svg,canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; padding: 0; }
::selection { background: var(--amber); color: #1a1206; }

/* ---------- Typography ---------- */
h1,h2,h3,h4 { line-height: 1.06; letter-spacing: -0.02em; font-weight: 600; }
.display {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(2.9rem, 7.2vw, 6rem);
  line-height: .98;
  letter-spacing: -0.02em;
}
.display em, .serif-i { font-style: italic; }
.h2 { font-size: clamp(2rem, 4.2vw, 3.3rem); letter-spacing: -0.03em; font-weight: 600; }
.h3 { font-size: clamp(1.3rem, 2.3vw, 1.85rem); }
.lede { font-size: clamp(1.08rem, 1.7vw, 1.32rem); color: var(--text-soft); line-height: 1.55; }
.eyebrow {
  font-size: .76rem; font-weight: 600; letter-spacing: .28em;
  text-transform: uppercase; color: var(--amber-300);
  display: inline-flex; align-items: center; gap: .8em;
}
.eyebrow::before { content:""; width: 30px; height: 1px; background: var(--amber); display:inline-block; }
.serif { font-family: var(--serif); font-weight: 500; letter-spacing: -0.01em; }
.amber-text { color: var(--amber-300); }
.grad-text {
  background: var(--grad-amber); -webkit-background-clip: text;
  background-clip: text; color: transparent;
}

/* ---------- Layout helpers ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
.section { padding-block: clamp(64px, 9vw, 130px); }
.section--tight { padding-block: clamp(48px, 6vw, 84px); }
.center { text-align: center; }
.muted { color: var(--muted); }
.stack > * + * { margin-top: 1.1rem; }
.grid { display: grid; gap: clamp(18px, 2.5vw, 30px); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.max-60 { max-width: 60ch; }
.max-48 { max-width: 48ch; }
.mx-auto { margin-inline: auto; }

/* ============================================================
   Loader — logo edge lights up on dark
   ============================================================ */
#loader {
  position: fixed; inset: 0; z-index: 9999;
  display: grid; place-items: center;
  background: radial-gradient(60% 60% at 50% 45%, #15100B, var(--bg));
  transition: opacity .8s var(--ease), visibility .8s;
}
#loader.is-done { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-mark { width: clamp(120px, 22vw, 190px); height: auto; overflow: visible; }
.loader-mark .edge {
  fill: none;
  stroke: var(--amber);
  stroke-width: 5;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 9px rgba(255,138,30,.8));
  stroke-dasharray: 1640;
  stroke-dashoffset: 1640;
  animation: draw 1.7s var(--ease) forwards;
}
.loader-mark .fill {
  fill: var(--text);
  opacity: 0;
  animation: fillIn .7s ease .9s forwards;
}
@keyframes draw   { to { stroke-dashoffset: 0; } }
@keyframes fillIn { to { opacity: 1; } }
.loader-word {
  margin-top: 18px; text-align: center;
  font-size: .78rem; letter-spacing: .5em; text-transform: uppercase;
  color: var(--muted); opacity: 0; padding-left: .5em;
  animation: fillIn .6s ease 1.3s forwards;
}

/* ============================================================
   Navigation
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h);
  display: flex; align-items: center;
  transition: background .35s var(--ease), box-shadow .35s var(--ease), border-color .35s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(11,9,7,.72);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom-color: var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 500; letter-spacing: -0.01em; }
.brand svg { width: 34px; height: 34px; fill: var(--text); }
.brand .word { font-size: 1.25rem; font-weight: 500; font-family: var(--serif); }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 9px 15px; border-radius: var(--radius-pill);
  font-size: .95rem; font-weight: 450; color: var(--text-soft);
  transition: color .2s, background .2s; position: relative;
}
.nav-links a:hover { color: var(--text); background: rgba(255,247,235,.05); }
.nav-links a.active { color: var(--amber-300); }
.nav-cta { display: flex; align-items: center; gap: 10px; }
.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 12px; align-items:center; justify-content:center; }
.nav-toggle span { width: 18px; height: 2px; background: var(--text); position: relative; transition: .3s; }
.nav-toggle span::before, .nav-toggle span::after { content:""; position:absolute; left:0; width:18px; height:2px; background: var(--text); transition:.3s; }
.nav-toggle span::before { top: -6px; } .nav-toggle span::after { top: 6px; }
.nav-open .nav-toggle span { background: transparent; }
.nav-open .nav-toggle span::before { top:0; transform: rotate(45deg); }
.nav-open .nav-toggle span::after  { top:0; transform: rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .55em;
  padding: 13px 22px; border-radius: var(--radius-pill);
  font-weight: 540; font-size: .96rem; letter-spacing: -0.01em;
  transition: transform .22s var(--ease), box-shadow .25s, background .25s, color .2s, border-color .25s;
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; }
.btn-primary { background: var(--text); color: #15110B; }
.btn-primary:hover { background: var(--amber); color: #1a1206; box-shadow: var(--shadow-amber); transform: translateY(-2px); }
.btn-amber { background: var(--grad-amber); color: #1d1305; box-shadow: var(--shadow-amber); font-weight: 600; }
.btn-amber:hover { transform: translateY(-2px); filter: brightness(1.06); }
.btn-ghost { background: rgba(255,247,235,.03); color: var(--text); border: 1px solid var(--line-2); }
.btn-ghost:hover { border-color: var(--amber); color: var(--amber-300); transform: translateY(-2px); }
.btn-lg { padding: 16px 28px; font-size: 1.02rem; }
.link-arrow { display:inline-flex; align-items:center; gap:.4em; font-weight:540; color: var(--amber-300); }
.link-arrow svg { width: 16px; height: 16px; transition: transform .25s var(--ease); }
.link-arrow:hover svg { transform: translateX(4px); }

/* ============================================================
   Hero — full-bleed particle background
   ============================================================ */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: center;
  padding-top: var(--nav-h); overflow: hidden;
}
.hero > .wrap { min-width: 0; }   /* let the flex item shrink so copy wraps on mobile */
#infinity-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  z-index: 0; cursor: grab; touch-action: pan-y;
}
#infinity-canvas:active { cursor: grabbing; }
.hero-bg {
  position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background:
    linear-gradient(90deg, rgba(11,9,7,.74) 0%, rgba(11,9,7,.28) 30%, transparent 52%),
    radial-gradient(72% 64% at 52% 46%, transparent 52%, rgba(11,9,7,.45) 100%),
    radial-gradient(900px 480px at 80% 14%, rgba(255,138,30,.07), transparent 60%);
}
.hero-inner { position: relative; z-index: 2; max-width: 56ch; }
.hero-inner .eyebrow { margin-bottom: 26px; }
.hero h1 { margin-bottom: 26px; }
.hero h1 .grad-text { display: inline; }
.hero .lede { max-width: 46ch; margin-bottom: 34px; color: var(--text); }
.hero .lede .hl { color: var(--amber-300); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.hero-meta {
  position: absolute; right: var(--gut); bottom: 38px; z-index: 2; text-align: right;
  font-size: .72rem; letter-spacing: .22em; text-transform: uppercase; color: var(--muted-2); line-height: 1.9;
}
.hero-scroll {
  position: absolute; left: 50%; bottom: 26px; transform: translateX(-50%); z-index: 2;
  font-size: .68rem; letter-spacing: .4em; text-transform: uppercase; color: var(--muted-2);
  display: flex; align-items: center; gap: 8px;
}
.hero-scroll::after { content:""; width: 1px; height: 26px; background: linear-gradient(var(--amber), transparent); animation: scrollpulse 1.8s ease-in-out infinite; }
@keyframes scrollpulse { 0%,100%{opacity:.3;transform:scaleY(.6)} 50%{opacity:1;transform:scaleY(1)} }

/* Logos marquee */
.hero-logos { position: relative; z-index: 2; }
.marquee { overflow:hidden; -webkit-mask-image: linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent); mask-image: linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent); }
.marquee-track { display:flex; gap: 56px; width:max-content; animation: scroll 30s linear infinite; }
.marquee-track span { font-weight:600; font-size:1.2rem; color: var(--muted-2); letter-spacing:-.02em; white-space:nowrap; }
@keyframes scroll { to { transform: translateX(-50%); } }

/* ============================================================
   Cards & surfaces
   ============================================================ */
.card {
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: clamp(22px, 2.6vw, 34px);
  box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease), box-shadow .3s, border-color .3s;
  position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--line-2); }
.card .ico {
  width: 52px; height: 52px; border-radius: 14px; display:grid; place-items:center;
  background: var(--amber-tint); color: var(--amber-300); margin-bottom: 18px;
  border: 1px solid rgba(255,138,30,.2);
}
.card .ico svg { width: 24px; height: 24px; }
.card h3 { margin-bottom: 8px; }
.card p { color: var(--muted); font-size: .98rem; }
.card--dark { background: var(--panel); border-color: var(--line); }
.card--dark p { color: var(--muted); }
.card--dark .ico { background: rgba(255,138,30,.12); color: var(--amber-300); }
.card--amber { background: var(--grad-amber); color:#221404; border-color: transparent; }
.card--amber p { color: rgba(34,20,4,.82); }
.card--amber .ico { background: rgba(34,20,4,.14); color:#221404; border-color: transparent; }
.card--amber .eyebrow { color: #3a2407 !important; }
.card--amber .eyebrow::before { background:#3a2407; }

.feature-row { display:grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: clamp(18px,2.5vw,30px); }

/* Stat block */
.stats { display:grid; grid-template-columns: repeat(auto-fit,minmax(150px,1fr)); gap: 12px; }
.stat { padding: 26px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--line); }
.stat .num { font-size: clamp(2.2rem,4vw,3.1rem); font-weight: 600; letter-spacing:-.04em; font-family: var(--serif); }
.stat .num span { color: var(--amber-300); }
.stat .label { color: var(--muted); font-size:.92rem; margin-top: 4px; }

/* Split feature */
.split { display:grid; grid-template-columns: 1fr 1fr; gap: clamp(30px,5vw,72px); align-items:center; }
.split.reverse > :first-child { order: 2; }
.split-visual {
  border-radius: var(--radius-lg); background: var(--grad-warm);
  border: 1px solid var(--line); aspect-ratio: 4/3; padding: 28px;
  display:grid; place-items:center; box-shadow: var(--shadow-md); overflow:hidden;
}

/* Section heading block */
.sec-head { max-width: 64ch; margin-bottom: clamp(34px,5vw,58px); }
.sec-head.center { margin-inline:auto; }
.sec-head .h2 { margin: 14px 0 14px; }

/* Pills / tags */
.taglist { display:flex; flex-wrap:wrap; gap:10px; }
.tag {
  padding: 8px 16px; border-radius: var(--radius-pill); font-size:.85rem; font-weight:500;
  background: var(--surface); color: var(--text-soft); border: 1px solid var(--line);
  transition: .2s;
}
.tag:hover { border-color: var(--line-2); }
.tag.active { background: var(--amber); color:#1a1206; border-color: var(--amber); }

/* Page hero (interior) */
.page-hero { padding-top: calc(var(--nav-h) + clamp(56px,8vw,110px)); padding-bottom: clamp(30px,4vw,52px); position:relative; overflow:hidden; }
.page-hero::after { content:""; position:absolute; inset:0; z-index:-1;
  background:
    radial-gradient(820px 420px at 78% -10%, rgba(255,138,30,.12), transparent 60%),
    radial-gradient(600px 400px at 8% 110%, rgba(255,138,30,.06), transparent 60%); }
.page-hero h1 { margin: 18px 0 18px; }
.page-hero .lede { max-width: 58ch; }

/* Timeline / process */
.steps { counter-reset: step; display:grid; gap: 4px; }
.step { display:grid; grid-template-columns: auto 1fr; gap: 22px; padding: 26px 0; border-top:1px solid var(--line); }
.step:last-child { border-bottom: 1px solid var(--line); }
.step .n {
  counter-increment: step; width: 48px; height:48px; border-radius:50%;
  display:grid; place-items:center; font-weight:600; color:var(--amber-300);
  background: var(--amber-tint); border:1px solid rgba(255,138,30,.25); font-family: var(--serif);
}
.step .n::before { content: counter(step,decimal-leading-zero); }
.step h3 { margin-bottom:6px; }
.step p { color: var(--muted); }

/* Quote */
.quote { font-family: var(--serif); font-size: clamp(1.7rem,3.6vw,2.7rem); line-height:1.2; letter-spacing:-.02em; color: var(--text); }
.quote .grad-text { font-style: italic; }

/* CTA band */
.cta-band {
  position: relative; overflow:hidden; border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--surface), var(--panel));
  border: 1px solid var(--line);
  color:var(--text); padding: clamp(40px,6vw,80px); text-align:center;
}
.cta-band::before { content:""; position:absolute; inset:-2px; z-index:0;
  background: radial-gradient(600px 320px at 80% 130%, rgba(255,138,30,.28), transparent 60%),
              radial-gradient(520px 280px at 12% -30%, rgba(255,138,30,.18), transparent 60%); }
.cta-band > * { position:relative; z-index:1; }
.cta-band .h2 { margin-bottom: 14px; }
.cta-band p { color: var(--text-soft); max-width: 52ch; margin: 0 auto 28px; }

/* ============================================================
   Forms / Contact
   ============================================================ */
.form { display:grid; gap: 16px; }
.field { display:grid; gap:7px; }
.field label { font-size:.86rem; font-weight:540; color: var(--text-soft); }
.field input, .field textarea, .field select {
  font: inherit; font-size: .97rem; padding: 13px 15px;
  border: 1px solid var(--line-2); border-radius: 12px; background: var(--bg-2);
  color: var(--text); transition: border-color .2s, box-shadow .2s, background .2s;
}
.field select { appearance:none; background-image: linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%); background-position: calc(100% - 20px) 19px, calc(100% - 15px) 19px; background-size: 5px 5px, 5px 5px; background-repeat:no-repeat; }
.field input::placeholder, .field textarea::placeholder { color: var(--muted-2); }
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none; border-color: var(--amber); background: var(--bg);
  box-shadow: 0 0 0 4px rgba(255,138,30,.16);
}
.field textarea { resize: vertical; min-height: 130px; }
.row-2 { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.form-note { font-size:.84rem; color: var(--muted); }
.form-status { font-size:.92rem; padding: 12px 14px; border-radius:10px; display:none; }
.form-status.show { display:block; }
.form-status.ok { background: rgba(60,180,110,.14); color:#7BE3A6; border:1px solid rgba(60,180,110,.3); }
.form-status.err { background: rgba(220,80,80,.14); color:#F0A6A6; border:1px solid rgba(220,80,80,.3); }
.contact-grid { display:grid; grid-template-columns: 1fr 1.1fr; gap: clamp(30px,5vw,64px); align-items:start; }
.contact-info .item { display:flex; gap:14px; padding: 16px 0; border-bottom:1px solid var(--line); }
.contact-info .item:last-child{ border-bottom:none; }
.contact-info .ico { width:44px;height:44px;border-radius:12px;background:var(--amber-tint);color:var(--amber-300);display:grid;place-items:center;flex:none; border:1px solid rgba(255,138,30,.2); }
.contact-info .ico svg{ width:20px;height:20px; }
.contact-info strong { color: var(--text); }
.contact-info a { color: var(--amber-300); }

/* ============================================================
   Footer
   ============================================================ */
.footer { background: var(--panel); color: var(--muted); padding-top: clamp(56px,7vw,90px); margin-top: clamp(40px,6vw,80px); border-top: 1px solid var(--line); }
.footer a { color: var(--muted); transition: color .2s; }
.footer a:hover { color: var(--text); }
.footer-top { display:grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 36px; padding-bottom: 50px; border-bottom: 1px solid var(--line); }
.footer .brand .word { color:var(--text); }
.footer .brand svg { fill: var(--text); }
.footer-col h4 { color:var(--text); font-size:.78rem; letter-spacing:.16em; text-transform:uppercase; margin-bottom:16px; font-weight:600; }
.footer-col li { margin-bottom:10px; font-size:.95rem; }
.footer-blurb { max-width: 34ch; font-size:.96rem; margin: 16px 0 22px; }
.footer-bottom { display:flex; justify-content:space-between; align-items:center; gap:16px; padding: 24px 0 40px; font-size:.86rem; flex-wrap:wrap; }
.footer-bottom .socials { display:flex; gap:12px; }
.footer-bottom .socials a { width:38px;height:38px;border-radius:10px; background:rgba(255,247,235,.05); display:grid;place-items:center; transition:.2s; }
.footer-bottom .socials a:hover { background: var(--amber-tint); color: var(--amber-300); }
.footer-bottom .socials svg { width:17px;height:17px; }

/* ============================================================
   Scroll reveal
   ============================================================ */
.reveal { opacity:0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity:1; transform:none; }
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 980px){
  .split, .contact-grid { grid-template-columns: 1fr; }
  .split.reverse > :first-child { order: 0; }
  .cols-4 { grid-template-columns: repeat(2,1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .hero-meta { display:none; }
}
@media (max-width: 760px){
  .nav-links, .nav-cta .btn { display:none; }
  .nav-toggle { display:flex; }
  .nav-open .nav-links {
    display:flex; flex-direction:column; align-items:stretch;
    position: fixed; top: var(--nav-h); left:0; right:0;
    background: rgba(11,9,7,.97); backdrop-filter: blur(16px);
    padding: 16px var(--gut) 28px; gap: 4px; border-bottom:1px solid var(--line);
    box-shadow: var(--shadow-md);
  }
  .nav-open .nav-links a { padding: 14px 12px; font-size: 1.05rem; }
  .cols-2, .cols-3, .cols-4, .row-2 { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 28px; }
  .footer-bottom { flex-direction:column; align-items:flex-start; }
  .hero { min-height: 92vh; }
}
@media (max-width: 600px){
  .display { font-size: clamp(1.95rem, 8.6vw, 2.9rem); line-height: 1.02; }
  .hero-inner h1, .hero-inner .lede { overflow-wrap: anywhere; }
  .hero .lede { max-width: 100%; }
}
@media (max-width: 460px){
  .footer-top { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after { animation-duration:.001ms !important; transition-duration:.001ms !important; }
  .reveal { opacity:1; transform:none; }
}