:root {
  --bg: #000;
  --ink: #ffffff;
  --ink-dim: #8a8a8a;
  --field-bg: #1a1a1a;
  --field-border: rgba(255,255,255,0.06);
  --display-font: "Geist", ui-sans-serif, system-ui, sans-serif;
  --mono: "Geist Mono", "JetBrains Mono", ui-monospace, monospace;
}

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

html, body, #root {
  min-height: 100%;
  width: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--display-font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input  { font: inherit; color: inherit; }

.stage {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(28px, 4vw, 80px);
  position: relative;
}

/* Wordmark anchored to the top-left of the page */
.wordmark {
  position: absolute;
  top: clamp(20px, 2.4vw, 32px);
  left: clamp(20px, 2.6vw, 36px);
  display: inline-block;
  z-index: 5;
  isolation: isolate;
}
.wordmark img {
  display: block;
  height: clamp(22px, 1.8vw, 30px);
  width: auto;
  /* Base dims during the sweep so the white sheen band pops against it */
  animation: wm-dim 10s linear infinite;
  will-change: filter;
}

/* The sheen layer — a moving bright band, masked to the logo silhouette so
   it only paints inside the white pixels of the wordmark. The mask uses the
   same image as the base, scaled with `contain` to fit. */
.wm-shine {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    115deg,
    transparent 42%,
    rgba(255, 255, 255, 0.95) 50%,
    transparent 58%
  );
  background-size: 300% 100%;
  background-repeat: no-repeat;
  -webkit-mask-image: url("assets/logo-white.png");
  -webkit-mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-image: url("assets/logo-white.png");
  mask-size: contain;
  mask-repeat: no-repeat;
  mask-position: center;
  animation: wm-shine 10s linear infinite;
  will-change: background-position;
}

/* Hot spot starts off-right (pos 0%), sweeps across in the first ~1.2s,
   then parks off-left for the remaining ~8.8s before the cycle restarts. */
@keyframes wm-shine {
  0%   { background-position-x: 0%; }
  12%  { background-position-x: 100%; }
  100% { background-position-x: 100%; }
}
/* Dim the base img during the sweep window so the highlight reads as a
   reflective glint rather than a same-tone overlay. */
@keyframes wm-dim {
  0%   { filter: brightness(1); }
  1%   { filter: brightness(0.68); }
  11%  { filter: brightness(0.68); }
  13%  { filter: brightness(1); }
  100% { filter: brightness(1); }
}

/* ───────────────── LAYOUT ───────────────── */
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  align-items: center;
  gap: clamp(40px, 8vw, 140px);
  width: 100%;
  max-width: 1480px;
}

.copy {
  display: flex;
  flex-direction: column;
  gap: clamp(20px, 2.6vw, 36px);
  max-width: 640px;
}

/* ───────────────── COPY ───────────────── */
.tagline {
  font-family: var(--display-font);
  font-weight: 600;
  font-size: clamp(40px, 5.6vw, 86px);
  line-height: 1.02;
  letter-spacing: -0.035em;
  color: var(--ink);
  text-wrap: balance;
}

/* The trailing period — slowly rotates clockwise. transform-origin nudged
   downward because the glyph sits near the baseline, not the box center. */
.spin-dot {
  display: inline-block;
  transform-origin: 50% 78%;
  animation: spin-dot 9s linear infinite;
}
@keyframes spin-dot {
  to { transform: rotate(360deg); }
}
.subtitle {
  font-family: var(--display-font);
  font-weight: 400;
  font-size: clamp(18px, 1.4vw, 22px);
  line-height: 1.4;
  letter-spacing: -0.005em;
  color: var(--ink-dim);
  max-width: 38ch;
  text-wrap: pretty;
}

/* ───────────────── CONTACT ROW ───────────────── */
.contact-row {
  display: flex;
  gap: 12px;
  align-items: stretch;
  margin-top: clamp(8px, 1.4vw, 18px);
  flex-wrap: wrap;
}

/* ───────────────── CTA — base + variants ───────────────── */
.cta {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--display-font);
  font-weight: 500;
  font-size: 15px;
  letter-spacing: -0.005em;
  text-transform: none;
  text-decoration: none;
  height: 56px;
  padding: 0 26px;
  border-radius: 8px;
  color: var(--ink);
  transition: transform .25s ease, box-shadow .35s ease, background .25s ease;
  white-space: nowrap;
}
.cta .arrow { transition: transform .25s ease; }
.cta:hover .arrow { transform: translateX(4px); }

/* LIQUID GLASS surface — refractive layered card. Applied to anything
   that needs the same translucent material (CTAs, social buttons, etc).
   The element must contain four absolutely-positioned span layers:
     .glass-distort, .glass-tint, .glass-spec, .glass-edge
   and an optional .glass-content span for the foreground. */
.glass-card {
  background: transparent;
  overflow: hidden;
  box-shadow:
    0 18px 48px rgba(0,0,0,0.28),
    0 2px 10px rgba(0,0,0,0.18);
}
.glass-card > span {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
}
.glass-card .glass-distort {
  -webkit-backdrop-filter: blur(8px) saturate(160%) brightness(1.08);
  backdrop-filter: blur(8px) saturate(160%) brightness(1.08) url(#liquid-glass-distort);
  z-index: 0;
}
.glass-card .glass-tint {
  background: linear-gradient(180deg,
    rgba(255,255,255,0.22) 0%,
    rgba(255,255,255,0.10) 50%,
    rgba(255,255,255,0.18) 100%);
  z-index: 1;
}
.glass-card .glass-spec {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.55) 0%, rgba(255,255,255,0) 38%),
    linear-gradient(0deg,   rgba(255,255,255,0.22) 0%, rgba(255,255,255,0) 35%),
    radial-gradient(120% 80% at 15% -10%, rgba(255,255,255,0.45), rgba(255,255,255,0) 55%);
  mix-blend-mode: screen;
  opacity: 0.95;
  z-index: 2;
  transition: transform .6s ease, opacity .4s ease;
}
.glass-card .glass-edge {
  box-shadow:
    0 0 0 1.5px rgba(255,255,255,0.55) inset,
    0 1px 0 rgba(255,255,255,0.90) inset,
    0 -1px 0 rgba(255,255,255,0.40) inset,
    1px 0 0 rgba(255,255,255,0.30) inset,
    -1px 0 0 rgba(255,255,255,0.30) inset;
  z-index: 3;
}
.glass-card .glass-content {
  position: relative;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.glass-card:hover {
  box-shadow:
    0 22px 60px rgba(0,0,0,0.36),
    0 2px 10px rgba(0,0,0,0.22);
}
.glass-card:hover .glass-spec { transform: translate(4px, -2px); opacity: 1; }

/* CTA-specific: chromatic fringe on the label text */
.cta.glass-card .glass-content {
  text-shadow:
    -0.4px 0 0 rgba(140, 200, 255, 0.40),
     0.4px 0 0 rgba(255, 160, 190, 0.30),
     0 2px 14px rgba(0,0,0,0.45);
}

.cta-solid {
  background: var(--ink);
  color: #000;
}
.cta-solid:hover { background: #f0f0f0; }

.cta-underline {
  background: transparent;
  color: var(--ink);
  padding: 0 0;
  height: auto;
  border-radius: 0;
  border-bottom: 1px solid var(--ink);
}

/* ───────────────── SOCIAL BUTTONS ───────────────── */
.socials {
  position: absolute;
  bottom: clamp(20px, 2.4vw, 32px);
  left: clamp(20px, 2.6vw, 36px);
  display: flex;
  gap: 10px;
  z-index: 5;
}
.social {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  color: #fff;
  transition: transform .2s ease, box-shadow .35s ease;
}
.social:hover {
  transform: translateY(-2px);
}
.social .glass-content {
  width: 100%;
  height: 100%;
}
.social .glass-content svg {
  width: 15px;
  height: 15px;
  display: block;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.4));
}

/* ───────────────── GLYPH ───────────────── */
.glyph-col {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  /* Perspective lives on the column so the 3D rotation reads as depth */
  perspective: 1400px;
  perspective-origin: 50% 50%;
}
.glyph-wrap {
  width: 100%;
  max-width: 620px;
  aspect-ratio: 1 / 1;
  position: relative;
  transform-style: preserve-3d;
}
/* The 3D-rotated element. Drives the mouse-tilt via CSS vars set by the hook. */
.glyph-3d {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  transform: rotateX(var(--rx, 0deg)) rotateY(var(--ry, 0deg));
  will-change: transform;
}
.glyph-defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  pointer-events: none;
}
.glyph-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  /* The clip-path is the actual Res Labs glyph shape. Defined in app.jsx as
     an SVG <clipPath clipPathUnits="objectBoundingBox"> so coords are 0-1. */
  clip-path: url(#reslabs-glyph);
  -webkit-clip-path: url(#reslabs-glyph);
}
/* Mouse-tracked sheen — floats just above the video plane. Uses the glyph
   shape too so it doesn't bleed into the surrounding black canvas. */
.glyph-shine {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(
    40% 50% at var(--spec-x, 50%) var(--spec-y, 50%),
    rgba(255,255,255,0.30) 0%,
    rgba(255,255,255,0.08) 35%,
    rgba(255,255,255,0) 65%
  );
  mix-blend-mode: screen;
  opacity: 0.6;
  clip-path: url(#reslabs-glyph);
  -webkit-clip-path: url(#reslabs-glyph);
  transform: translateZ(10px);
}

/* ───────────────── RESPONSIVE ───────────────── */
@media (max-width: 900px) {
  .stage { padding: clamp(24px, 6vw, 48px) clamp(20px, 5vw, 32px); }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: clamp(40px, 8vw, 64px);
  }
  .glyph-col { order: -1; }
  .glyph-wrap { max-width: 360px; margin: 0 auto; }
  .tagline   { font-size: clamp(38px, 9vw, 64px); }
  .contact-row { flex-direction: column; align-items: stretch; }
  .cta { justify-content: center; }
}