/* ============================================================
   Creative 3D Technologies — bespoke redesign
   "Engineered Luxury" system
   ============================================================ */

:root {
  /* surfaces */
  --bg:        #08080A;
  --bg-1:      #0C0C0E;
  --bg-2:      #111114;
  --bg-3:      #16161A;
  --card:      #0F0F12;
  --card-hi:   #17171B;

  /* ink */
  --ink:       #F4F2EF;
  --ink-2:     rgba(244,242,239,0.62);
  --ink-3:     rgba(244,242,239,0.40);
  --ink-4:     rgba(244,242,239,0.22);

  /* lines */
  --line:      rgba(244,242,239,0.09);
  --line-2:    rgba(244,242,239,0.14);
  --line-hair: rgba(244,242,239,0.055);

  /* molten accent */
  --ember:     #FF4D1F;
  --ember-hot: #FF6A2B;
  --ember-deep:#E5341A;
  --ember-glow: rgba(255,77,31,0.55);
  --ember-wash: rgba(255,77,31,0.10);

  /* type */
  --display: "Manrope", system-ui, sans-serif;
  --sans:    "Manrope", system-ui, -apple-system, sans-serif;
  --mono:    "JetBrains Mono", ui-monospace, monospace;

  /* metrics */
  --container: 1340px;
  --gutter: clamp(20px, 5vw, 72px);
  --section-y: clamp(90px, 12vw, 180px);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-2: cubic-bezier(0.65, 0, 0.35, 1);
}

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

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

/* offset hash anchors below fixed nav */
[id] { scroll-margin-top: 90px; }

body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  font-weight: 400;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

::selection { background: var(--ember); color: #0a0a0a; }

img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* film grain + vignette overlays applied to body via pseudo */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 1;
  background: radial-gradient(120% 90% at 50% 0%, transparent 55%, rgba(0,0,0,0.5) 100%);
  mix-blend-mode: multiply;
}
.grain {
  position: fixed; inset: -50%;
  pointer-events: none; z-index: 2; opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ----------------------------------------------------------- */
/* layout primitives                                            */
/* ----------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-inline: var(--gutter);
  position: relative;
}
.section { position: relative; padding-block: var(--section-y); }

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 14px;
}
.eyebrow .idx { color: var(--ember); }
.eyebrow::before {
  content: "";
  width: 26px; height: 1px;
  background: var(--ember);
  display: inline-block;
}

h1, h2, h3 { font-family: var(--display); font-weight: 800; line-height: 0.98; letter-spacing: -0.02em; }

.h-display {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(44px, 8.2vw, 132px);
  line-height: 0.92;
  letter-spacing: -0.035em;
}
.h-section {
  font-family: var(--display);
  font-weight: 700;
  font-size: clamp(32px, 4.6vw, 68px);
  line-height: 0.98;
  letter-spacing: -0.025em;
}
.lede {
  font-size: clamp(18px, 1.6vw, 23px);
  line-height: 1.55;
  color: var(--ink-2);
  font-weight: 400;
  letter-spacing: -0.012em;
  max-width: 56ch;
}

/* ----------------------------------------------------------- */
/* buttons                                                      */
/* ----------------------------------------------------------- */
.btn {
  --pad-y: 16px; --pad-x: 30px;
  position: relative;
  display: inline-flex; align-items: center; gap: 12px;
  padding: var(--pad-y) var(--pad-x);
  font-family: var(--mono);
  font-size: 12.5px; font-weight: 500;
  letter-spacing: 0.16em; text-transform: uppercase;
  cursor: pointer; border: none; background: none;
  color: var(--ink); overflow: hidden;
  transition: color .4s var(--ease), transform .4s var(--ease);
  white-space: nowrap;
}
.btn .ico { transition: transform .45s var(--ease); }
.btn:hover .ico { transform: translateX(4px); }

.btn--solid { background: var(--ember); color: #0a0a0a; border-radius: 2px; }
.btn--solid::after {
  content:""; position:absolute; inset:0; z-index:0;
  background: linear-gradient(100deg, var(--ember-hot), var(--ember-deep));
  opacity:0; transition: opacity .4s var(--ease);
}
.btn--solid span, .btn--solid .ico { position: relative; z-index: 1; }
.btn--solid:hover::after { opacity: 1; }
.btn--solid:hover { transform: translateY(-2px); }

.btn--ghost {
  border: 1px solid var(--line-2); border-radius: 2px;
  color: var(--ink);
}
.btn--ghost::after {
  content:""; position:absolute; inset:0; z-index:0;
  background: var(--ink); transform: translateY(101%);
  transition: transform .45s var(--ease);
}
.btn--ghost span, .btn--ghost .ico { position: relative; z-index: 1; transition: color .3s var(--ease); }
.btn--ghost:hover { color: #0a0a0a; }
.btn--ghost:hover::after { transform: translateY(0); }

.btn--text {
  padding: 0; color: var(--ink);
  border-bottom: 1px solid var(--line-2);
  padding-bottom: 8px; border-radius: 0;
}
.btn--text:hover { color: var(--ember); border-color: var(--ember); }

/* ----------------------------------------------------------- */
/* reveal animation states                                     */
/* ----------------------------------------------------------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 1s var(--ease), transform 1.1s var(--ease);
  transition-delay: var(--d, 0ms);
}
[data-reveal].in { opacity: 1; transform: none; }

[data-reveal="line"] { transform: scaleX(0); transform-origin: left; transition: transform 1.1s var(--ease); }
[data-reveal="line"].in { transform: scaleX(1); }

.mask-line { display: block; overflow: hidden; padding-bottom: 0.24em; padding-right: 0.16em; margin-bottom: -0.12em; margin-right: -0.16em; }
.mask-line > span {
  display: block;
  transform: translateY(110%);
  transition: transform 1.05s var(--ease);
  transition-delay: var(--d, 0ms);
}
.mask-line.in > span { transform: none; }