/* ============================================================
   SCALEWELL — Premium Dark Studio system
   Shared styles across all pages
   ============================================================ */

/* ---- Tokens ---- */
:root {
  --bg:        #ffffff;
  --bg-2:      #f6f7f9;
  --surface:   #ffffff;
  --surface-2: #f2f4f7;
  --line:      rgba(15,23,42,0.12);
  --line-2:    rgba(15,23,42,0.07);

  --text:      #0b0e14;
  --dim:       #475063;
  --faint:     #7b8494;

  /* accent (tweakable) */
  --accent:    #2f6bff;
  --accent-2:  #2454d6;
  --accent-ink:#ffffff;
  --glow:      color-mix(in oklab, var(--accent) 38%, transparent);
  --glow-soft: color-mix(in oklab, var(--accent) 16%, transparent);

  /* fonts (tweakable) */
  --font-display: "Bricolage Grotesque", "Space Grotesk", sans-serif;
  --font-body:    "Manrope", system-ui, sans-serif;

  /* spacing / density (tweakable via --density 0.8 - 1.25) */
  --density: 1;
  --section-y: calc(clamp(60px, 7.5vw, 112px) * var(--density));

  --container: 1240px;
  --radius: 18px;
  --radius-lg: 26px;

  --ease: cubic-bezier(.2,.7,.2,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  letter-spacing: .005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* atmospheric base gradient + grain */
body::before {
  content: "";
  position: fixed; inset: 0;
  background:
    radial-gradient(1200px 700px at 78% -8%, var(--glow-soft), transparent 60%),
    radial-gradient(900px 600px at 6% 12%, color-mix(in oklab, var(--accent) 7%, transparent), transparent 55%);
  pointer-events: none; z-index: 0;
}
body::after {
  content: "";
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.55'/%3E%3C/svg%3E");
  opacity: .03; mix-blend-mode: multiply;
  pointer-events: none; z-index: 0;
}

main, header, footer { position: relative; z-index: 1; }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* ---- Typography ---- */
h1,h2,h3,h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin: 0;
  text-wrap: balance;
}
.display {
  font-size: clamp(2.7rem, 6.4vw, 5.6rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 0.98;
}
h2.section-title {
  font-size: clamp(2rem, 3.8vw, 3.3rem);
  letter-spacing: -0.03em;
}
p { margin: 0 0 1em; color: var(--dim); }
p.lead { font-size: clamp(1.05rem, 1.5vw, 1.32rem); color: var(--dim); line-height: 1.55; }

.accent-text { color: var(--accent-2); }

/* ---- Layout ---- */
.container {
  width: min(100% - 48px, var(--container));
  margin-inline: auto;
}
.section { padding-block: var(--section-y); }
.section-sm { padding-block: calc(var(--section-y) * 0.62); }

/* eyebrow / kicker */
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-body);
  font-size: 12.5px; font-weight: 700;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent-2);
  margin-bottom: 22px;
  white-space: nowrap;
}
.kicker::before {
  content: ""; width: 26px; height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.section-head { max-width: 720px; margin-bottom: clamp(26px, 3.2vw, 44px); }
.section-head p { margin-top: 18px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head.center .kicker::before { display: none; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 700; font-size: 15px;
  letter-spacing: -0.01em;
  border: 1px solid transparent;
  transition: transform .35s var(--ease), background .3s, box-shadow .4s, border-color .3s;
  will-change: transform;
  white-space: nowrap;
}
.btn svg { width: 17px; height: 17px; }
.btn-primary {
  background: var(--accent); color: var(--accent-ink);
  box-shadow: 0 8px 30px -8px var(--glow), inset 0 1px 0 rgba(255,255,255,.25);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 18px 46px -10px var(--glow), 0 0 22px -4px var(--glow), inset 0 1px 0 rgba(255,255,255,.3); }
.btn-ghost {
  background: rgba(15,23,42,.035); color: var(--text);
  border-color: var(--line);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover { transform: translateY(-2px); border-color: rgba(15,23,42,.2); background: rgba(15,23,42,.06); }
.btn .arrow { transition: transform .35s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }

.link-arrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 14.5px; color: var(--text);
  transition: gap .3s var(--ease), color .3s;
}
.link-arrow svg { width: 16px; height: 16px; color: var(--accent-2); transition: transform .3s var(--ease); }
.link-arrow:hover { gap: 12px; }

/* ---- Header ---- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background .4s, border-color .4s, backdrop-filter .4s;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  backdrop-filter: blur(16px) saturate(140%);
  border-bottom-color: var(--line-2);
  box-shadow: 0 8px 30px -24px rgba(15,23,42,.5);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 74px;
}
.brand { display: inline-flex; align-items: center; gap: 11px; font-family: var(--font-display); font-weight: 700; font-size: 19px; letter-spacing: -0.02em; }
.brand .mark {
  width: 30px; height: 30px; border-radius: 9px;
  background: linear-gradient(140deg, var(--accent), color-mix(in oklab, var(--accent) 40%, #fff));
  display: grid; place-items: center; color: #fff;
  box-shadow: 0 4px 16px -4px var(--glow), inset 0 1px 0 rgba(255,255,255,.4);
  position: relative; overflow: hidden;
}
.brand .mark::after { content:""; position:absolute; inset:0; background: radial-gradient(circle at 30% 25%, rgba(255,255,255,.5), transparent 55%); }
.brand .mark span { font-size: 15px; font-weight: 800; position: relative; }
.brand small { color: var(--faint); font-weight: 600; font-size: 11px; letter-spacing: .12em; text-transform: uppercase; font-family: var(--font-body); }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  padding: 9px 15px; border-radius: 999px;
  font-size: 14.5px; font-weight: 600; color: var(--dim);
  transition: color .25s, background .25s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); background: rgba(15,23,42,.055); }
.nav-cta { display: flex; align-items: center; gap: 12px; }

.menu-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 10px; width: 42px; height: 42px; color: var(--text); align-items: center; justify-content: center; }

/* mobile nav */
.mobile-nav {
  position: fixed; inset: 0; z-index: 99;
  background: color-mix(in oklab, var(--bg) 96%, transparent);
  backdrop-filter: blur(20px);
  display: flex; flex-direction: column; justify-content: center; gap: 6px;
  padding: 40px;
  transform: translateY(-100%); opacity: 0; pointer-events: none;
  transition: transform .5s var(--ease-out), opacity .4s;
}
.mobile-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.mobile-nav a { font-family: var(--font-display); font-size: clamp(2rem, 9vw, 3rem); font-weight: 700; letter-spacing: -.03em; padding: 8px 0; color: var(--text); }
.mobile-nav a small { display:block; font-family: var(--font-body); font-size: 13px; color: var(--faint); letter-spacing:.1em; }

/* ---- Cards / surfaces ---- */
.card {
  background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

/* ---- Reveal animation ---- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .9s var(--ease-out), transform .9s var(--ease-out); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"]{ transition-delay:.08s } .reveal[data-delay="2"]{ transition-delay:.16s }
.reveal[data-delay="3"]{ transition-delay:.24s } .reveal[data-delay="4"]{ transition-delay:.32s }
.reveal[data-delay="5"]{ transition-delay:.4s } .reveal[data-delay="6"]{ transition-delay:.48s }

@media (prefers-reduced-motion: reduce) {
  /* Still fade content in (opacity only, no movement), but drop the slide + decorative loops */
  .reveal { transform: none; transition: opacity .9s var(--ease-out); }
  html { scroll-behavior: auto; }
  .viz::before, .hero-viz .float-card, .hero .accent-text { animation: none !important; }
}

/* ---- Section flow divider ---- */
.flow-divider {
  position: relative; height: 1px;
  width: min(100% - 48px, var(--container));
  margin: clamp(44px, 6vw, 78px) auto 0;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}
.flow-divider::after {
  content: ""; position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: 220px; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  filter: blur(2px); opacity: .65;
}

/* ---- Footer ---- */
.site-footer { border-top: 1px solid var(--line); padding-block: clamp(56px, 7vw, 88px) 36px; position: relative; z-index: 1; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px; }
.footer-grid h5 { font-family: var(--font-body); font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--faint); margin: 0 0 18px; font-weight: 700; }
.footer-links { display: flex; flex-direction: column; gap: 11px; }
.footer-links a { color: var(--dim); font-size: 14.5px; font-weight: 600; transition: color .25s; width: fit-content; }
.footer-links a:hover { color: var(--text); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: clamp(40px, 5vw, 60px); padding-top: 28px; border-top: 1px solid var(--line-2); color: var(--faint); font-size: 13.5px; }
.footer-legal { display: flex; gap: 22px; }
.footer-legal a { color: var(--faint); font-weight: 600; transition: color .2s; }
.footer-legal a:hover { color: var(--text); }
.social-row { display: flex; gap: 10px; }
.social-row a { width: 40px; height: 40px; border-radius: 11px; border: 1px solid var(--line); display: grid; place-items: center; color: var(--dim); transition: all .3s var(--ease); }
.social-row a:hover { color: var(--text); border-color: var(--accent); transform: translateY(-3px); box-shadow: 0 10px 24px -10px var(--glow); }
.social-row svg { width: 17px; height: 17px; }

/* ---- Abstract visual placeholders ---- */
.viz {
  position: relative; overflow: hidden; border-radius: var(--radius);
  border: 1px solid var(--line); isolation: isolate;
  background:
    radial-gradient(58% 60% at 22% 26%, color-mix(in oklab, var(--accent-2) 92%, #fff), transparent 64%),
    radial-gradient(62% 66% at 80% 70%, color-mix(in oklab, var(--accent) 55%, #c084fc), transparent 66%),
    radial-gradient(54% 56% at 64% 16%, color-mix(in oklab, var(--accent) 45%, #2dd4bf), transparent 64%),
    linear-gradient(150deg, color-mix(in oklab, var(--accent) 78%, #000), color-mix(in oklab, var(--accent) 24%, #5b21b6));
}
.viz::before { /* animated highlight sheen */
  content:""; position:absolute; inset:-30%;
  background:
    radial-gradient(40% 44% at 30% 34%, color-mix(in oklab, var(--accent-2) 80%, #fff), transparent 60%),
    radial-gradient(46% 50% at 74% 64%, color-mix(in oklab, #c084fc 70%, transparent), transparent 62%);
  filter: blur(20px) saturate(130%);
  opacity: .85; mix-blend-mode: screen;
  animation: drift 18s ease-in-out infinite alternate;
}
.viz::after { content:""; position:absolute; inset:0; background:
  linear-gradient(180deg, transparent 52%, rgba(0,0,0,.4)),
  url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.4'/%3E%3C/svg%3E");
  mix-blend-mode: overlay; opacity:.45; }
@keyframes drift {
  0% { transform: translate(0,0) scale(1) rotate(0deg); }
  100% { transform: translate(5%, -4%) scale(1.14) rotate(6deg); }
}
.viz-grid { /* alt placeholder with grid lines */
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 28px 28px;
}

@media (max-width: 900px) {
  .nav-links, .nav-cta .btn-ghost { display: none; }
  .menu-toggle { display: inline-flex; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .footer-grid { grid-template-columns: 1fr; }
}