/* ============================================================
   SPARKIO — Landing page styles (theme + motion)
   ============================================================ */

.page {
  --bg: var(--ink);
  --bg-2: var(--carbon);
  --line: var(--ash);
  --fg: var(--paper);
  --fg-2: var(--fog);
  --fg-3: var(--smoke);
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  min-height: 100vh;
  transition: background .5s ease, color .5s ease;
}
.page.light {
  --bg: #F4F0E8;
  --bg-2: #FBF8F2;
  --line: #E3DCCE;
  --fg: #14110D;
  --fg-2: #5E564A;
  --fg-3: #8A8170;
}

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 32px; }

/* nav */
.nav { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(14px) saturate(1.2);
  background: color-mix(in oklab, var(--bg) 72%, transparent);
  border-bottom: 1px solid var(--line); }
.nav-in { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.nav a.ghost { color: var(--fg-2); text-decoration: none; font-size: 14px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 7px; padding: 8px 14px; border-radius: 10px;
  border: 1px solid var(--line); transition: all .2s ease; }
.nav a.ghost:hover { color: var(--fg); border-color: color-mix(in oklab, var(--ember) 50%, var(--line)); }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 9px; font-weight: 600; font-size: 15px;
  padding: 13px 22px; border-radius: 12px; cursor: pointer; text-decoration: none;
  border: 1px solid transparent; transition: transform .18s ease, box-shadow .25s ease, background .2s; }
.btn-primary { background: var(--ember-grad); color: #1A0E04;
  box-shadow: 0 8px 28px color-mix(in oklab, var(--g1) 40%, transparent); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 14px 40px color-mix(in oklab, var(--g1) 55%, transparent); }
.btn-ghost { color: var(--fg); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--fg-2); transform: translateY(-2px); }

/* eyebrow */
.eyebrow { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--ember); display: inline-flex; align-items: center; gap: 10px; }
.eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--ember); opacity: .6; }

/* reveal on scroll — keyed off data-rv (React-owned className never clobbers it).
   Opacity flips INSTANTLY (no transition/animation → can never freeze hidden);
   only the transform is animated as a cosmetic slide-up. If the animation is
   throttled/frozen, content is still fully visible (opacity 1). */
.reveal { opacity: 0; }
.reveal[data-rv="1"] { opacity: 1; animation: revealup .8s cubic-bezier(.2,.7,.2,1) both; }
@keyframes revealup { from { transform: translateY(22px); } to { transform: none; } }

/* motion */
@keyframes floaty { 0%,100% { transform: translateY(0) rotate(0deg); } 50% { transform: translateY(-14px) rotate(8deg); } }
@keyframes drift  { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-22px); } }
@keyframes pulseglow { 0%,100% { opacity: .85; } 50% { opacity: 1; filter: drop-shadow(0 0 26px color-mix(in oklab, var(--g2) 55%, transparent)); } }
@keyframes spinslow { from { transform: rotate(0); } to { transform: rotate(360deg); } }
.m-on .floaty { animation: floaty 7s ease-in-out infinite; }
.m-on .drift  { animation: drift 9s ease-in-out infinite; }
.m-on .pulseglow { animation: pulseglow 4.5s ease-in-out infinite; }
.m-lively .floaty { animation-duration: 4.5s; }
.m-lively .drift { animation-duration: 5.5s; }

/* project cards */
.proj-card { background: var(--bg-2); border: 1px solid var(--line); border-radius: 18px;
  padding: 24px; display: flex; flex-direction: column; gap: 12px; cursor: pointer;
  transition: transform .25s cubic-bezier(.2,.7,.2,1), border-color .25s, box-shadow .25s;
  position: relative; overflow: hidden; }
.proj-card::after { content: ""; position: absolute; inset: 0; border-radius: 18px; pointer-events: none;
  background: radial-gradient(120% 80% at 100% 0%, color-mix(in oklab, var(--g2) 14%, transparent), transparent 55%);
  opacity: 0; transition: opacity .3s; }
.proj-card:hover { transform: translateY(-5px); border-color: color-mix(in oklab, var(--ember) 45%, var(--line));
  box-shadow: 0 18px 50px rgba(0,0,0,.35); }
.proj-card:hover::after { opacity: 1; }
.proj-card .arrow { transition: transform .25s; }
.proj-card:hover .arrow { transform: translate(3px,-3px); }

/* list rows */
.proj-row { display: grid; grid-template-columns: 40px 1fr 1.4fr 28px; align-items: center; gap: 18px;
  padding: 22px 12px; border-top: 1px solid var(--line); cursor: pointer; transition: background .2s, padding .25s; }
.proj-row:hover { background: color-mix(in oklab, var(--ember) 6%, transparent); padding-left: 20px; }
.proj-row:last-child { border-bottom: 1px solid var(--line); }

@media (max-width: 720px) {
  .wrap { padding: 0 20px; }
  .proj-row { grid-template-columns: 30px 1fr 24px; }
  .proj-row .rowdesc { display: none; }
}