/* ============================================================
   Thousand Colors — landing page styles
   ============================================================ */

/* ---------- Fonts ---------- */
@font-face {
  font-family: "Avenir Next";
  src: url("/assets/fonts/AvenirNext-UltraLight.woff2") format("woff2");
  font-weight: 200;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Avenir Next";
  src: url("/assets/fonts/AvenirNext-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Avenir Next";
  src: url("/assets/fonts/AvenirNext-Medium.woff2") format("woff2");
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Avenir Next";
  src: url("/assets/fonts/AvenirNext-Demi.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Avenir Next";
  src: url("/assets/fonts/AvenirNext-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Avenir Next";
  src: url("/assets/fonts/AvenirNext-Heavy.woff2") format("woff2");
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

/* ---------- Design tokens ---------- */
:root {
  --bg: #09090e;
  --bg-2: #0e0e16;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f4f4f7;
  --text-dim: #a7a7b4;
  --text-faint: #6f6f7e;

  /* Brand rainbow pulled from the "tc" logo */
  --c-blue: #2540f0;
  --c-cyan: #16b6e8;
  --c-purple: #7b2ff7;
  --c-magenta: #ff1f8f;
  --c-red: #ff3a4e;
  --c-orange: #ff7a1a;
  --c-yellow: #ffc21a;

  --gradient: linear-gradient(
    100deg,
    var(--c-blue) 0%,
    var(--c-purple) 20%,
    var(--c-magenta) 42%,
    var(--c-red) 58%,
    var(--c-orange) 78%,
    var(--c-yellow) 100%
  );

  --font: "Avenir Next", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --maxw: 1160px;
  --radius: 20px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--font);
  font-weight: 400;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 24px; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 200;
  background: #fff; color: #000; padding: 10px 16px; border-radius: 8px;
}
.skip-link:focus { left: 16px; top: 16px; }

/* ---------- Aurora background ---------- */
.aurora {
  position: fixed; inset: 0; z-index: -1; overflow: hidden;
  background:
    radial-gradient(1200px 800px at 80% -10%, rgba(123, 47, 247, 0.10), transparent 60%),
    radial-gradient(900px 700px at 0% 20%, rgba(37, 64, 240, 0.10), transparent 60%),
    var(--bg);
}
.blob {
  position: absolute; border-radius: 50%;
  filter: blur(90px); opacity: 0.42;
  will-change: transform;
}
.blob-1 {
  width: 46vw; height: 46vw; top: -12vw; left: 52vw;
  background: radial-gradient(circle at 30% 30%, var(--c-magenta), var(--c-orange) 55%, transparent 72%);
  animation: drift1 22s var(--ease) infinite alternate;
}
.blob-2 {
  width: 40vw; height: 40vw; top: 18vw; left: -12vw;
  background: radial-gradient(circle at 40% 40%, var(--c-blue), var(--c-purple) 55%, transparent 72%);
  animation: drift2 26s var(--ease) infinite alternate;
}
.blob-3 {
  width: 34vw; height: 34vw; top: 60vh; left: 60vw;
  background: radial-gradient(circle at 50% 50%, var(--c-cyan), var(--c-yellow) 60%, transparent 74%);
  opacity: 0.28;
  animation: drift3 30s var(--ease) infinite alternate;
}
@keyframes drift1 { to { transform: translate(-8vw, 10vh) scale(1.15); } }
@keyframes drift2 { to { transform: translate(10vw, -6vh) scale(1.12); } }
@keyframes drift3 { to { transform: translate(-12vw, -12vh) scale(1.2); } }

.grain {
  position: absolute; inset: -50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%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='0.5'/%3E%3C/svg%3E");
  opacity: 0.03; mix-blend-mode: overlay;
}

/* ---------- Shared bits ---------- */
.grad-text {
  background: var(--gradient);
  background-size: 200% 100%;
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  animation: hue 8s ease-in-out infinite alternate;
}
@keyframes hue { to { background-position: 100% 0; } }

.eyebrow {
  font-weight: 600; font-size: 0.8rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--text-dim);
}

.btn {
  --pad: 0.85em 1.5em;
  position: relative;
  display: inline-flex; align-items: center; gap: 0.5em;
  padding: var(--pad); border-radius: 999px;
  font-weight: 600; font-size: 0.98rem; line-height: 1;
  border: 1px solid transparent; cursor: pointer;
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s, border-color 0.25s, opacity 0.25s, color 0.25s;
}
.btn--primary {
  color: #0a0a0f; background: #fff;
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px -8px rgba(255, 45, 142, 0.5);
}
.btn--ghost {
  border-color: var(--border-strong); color: var(--text); background: var(--surface);
  backdrop-filter: blur(8px);
}
.btn--ghost:hover { border-color: #fff; transform: translateY(-2px); }
.btn--link { color: var(--text-dim); padding-inline: 0.4em; }
.btn--link:hover { color: var(--text); }
.btn--lg { --pad: 1.05em 2em; font-size: 1.1rem; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 100;
  transition: background 0.3s, border-color 0.3s, backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.is-stuck {
  background: rgba(9, 9, 14, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--border);
}
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 74px; }
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand__mark { height: 34px; width: auto; }
.brand__name {
  font-weight: 700; font-size: 1.12rem; letter-spacing: -0.01em;
}
.brand--sm .brand__mark { height: 30px; }

.nav__links { display: flex; align-items: center; gap: 30px; }
.nav__links > a:not(.btn) {
  font-weight: 500; color: var(--text-dim); font-size: 0.98rem; position: relative;
  transition: color 0.2s;
}
.nav__links > a:not(.btn)::after {
  content: ""; position: absolute; left: 0; bottom: -6px; height: 2px; width: 0;
  background: var(--gradient); transition: width 0.25s var(--ease);
}
.nav__links > a:not(.btn):hover { color: var(--text); }
.nav__links > a:not(.btn):hover::after { width: 100%; }

.nav__toggle {
  display: none; flex-direction: column; gap: 5px; background: none; border: 0;
  padding: 8px; cursor: pointer;
}
.nav__toggle span { width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: transform 0.3s, opacity 0.3s; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: flex; flex-direction: column; gap: 4px;
  padding: 12px 24px 24px;
  background: rgba(9, 9, 14, 0.92); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.mobile-menu[hidden] { display: none; }
.mobile-menu a { padding: 14px 4px; font-size: 1.1rem; font-weight: 500; border-bottom: 1px solid var(--border); }
.mobile-menu a:last-child { border-bottom: 0; }

/* ---------- Hero ---------- */
.hero { padding: clamp(60px, 11vh, 140px) 0 clamp(70px, 12vh, 150px); }
.hero__inner { max-width: 880px; }
.hero__title {
  font-weight: 200; letter-spacing: -0.02em; line-height: 1.02;
  font-size: clamp(2.9rem, 9vw, 6.4rem);
  margin: 22px 0 26px;
}
.hero__lede {
  font-size: clamp(1.1rem, 2.2vw, 1.45rem); color: var(--text-dim);
  max-width: 640px; font-weight: 400;
}
.hero__cta { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; margin-top: 38px; }
.hero__proof {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  margin-top: 54px; color: var(--text-faint);
  font-size: 0.9rem; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase;
}
.hero__proof i { width: 5px; height: 5px; border-radius: 50%; background: var(--gradient); display: inline-block; }

/* ---------- Sections ---------- */
.section { padding: clamp(70px, 12vh, 130px) 0; position: relative; }
.section--alt::before {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent, rgba(255,255,255,0.015) 12%, rgba(255,255,255,0.015) 88%, transparent);
  pointer-events: none;
}
.section__head { max-width: 720px; margin-bottom: 56px; }
.section__title {
  font-weight: 600; letter-spacing: -0.02em; line-height: 1.08;
  font-size: clamp(1.9rem, 4.6vw, 3.1rem); margin: 16px 0 18px;
}
.section__sub { font-size: clamp(1.05rem, 2vw, 1.2rem); color: var(--text-dim); }

/* ---------- Cards ---------- */
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.card {
  position: relative; padding: 34px 32px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  overflow: hidden; transition: transform 0.35s var(--ease), border-color 0.35s, background 0.35s;
}
.card::after {
  content: ""; position: absolute; inset: 0; border-radius: var(--radius);
  padding: 1px; background: var(--gradient);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity 0.35s;
}
.card:hover { transform: translateY(-4px); background: var(--surface-2); }
.card:hover::after { opacity: 1; }
.card__dot { width: 34px; height: 34px; border-radius: 11px; margin-bottom: 22px; }
.card__dot[data-c="1"] { background: linear-gradient(135deg, var(--c-blue), var(--c-purple)); }
.card__dot[data-c="2"] { background: linear-gradient(135deg, var(--c-purple), var(--c-magenta)); }
.card__dot[data-c="3"] { background: linear-gradient(135deg, var(--c-red), var(--c-orange)); }
.card__dot[data-c="4"] { background: linear-gradient(135deg, var(--c-orange), var(--c-yellow)); }
.card h3 { font-weight: 600; font-size: 1.28rem; margin-bottom: 10px; letter-spacing: -0.01em; }
.card p { color: var(--text-dim); font-size: 1.02rem; }

/* ---------- Steps ---------- */
.steps { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.step { position: relative; padding-top: 26px; border-top: 1px solid var(--border); }
.step__num {
  font-weight: 700; font-size: 0.95rem; letter-spacing: 0.05em;
  background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.step h3 { font-weight: 600; font-size: 1.35rem; margin: 12px 0 10px; letter-spacing: -0.01em; }
.step p { color: var(--text-dim); }

/* ---------- Story ---------- */
.story__inner { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: clamp(30px, 6vw, 80px); align-items: center; }
.story__art {
  display: grid; place-items: center; padding: 48px;
  border-radius: 28px; border: 1px solid var(--border);
  background: radial-gradient(120% 120% at 30% 20%, rgba(123,47,247,0.16), transparent 60%),
              radial-gradient(120% 120% at 80% 90%, rgba(255,122,26,0.14), transparent 60%),
              var(--surface);
}
.story__art img { width: min(78%, 320px); filter: drop-shadow(0 20px 60px rgba(0,0,0,0.5)); }
.story__text p { color: var(--text-dim); margin-top: 16px; font-size: 1.08rem; }
.story__text strong { color: var(--text); font-weight: 600; }
.story__text .section__title { margin-top: 14px; }
.story__sign { color: var(--text-faint) !important; font-style: italic; margin-top: 26px !important; }

/* ---------- Contact ---------- */
.contact { text-align: center; }
.contact__inner {
  max-width: 820px; margin-inline: auto; padding: clamp(48px, 8vw, 84px) clamp(24px, 5vw, 60px);
  border-radius: 32px; border: 1px solid var(--border);
  background: radial-gradient(130% 130% at 50% 0%, rgba(255,31,143,0.10), transparent 55%),
              radial-gradient(130% 130% at 50% 100%, rgba(37,64,240,0.10), transparent 55%),
              var(--surface);
}
.contact__title { font-weight: 600; letter-spacing: -0.02em; line-height: 1.06; font-size: clamp(2.1rem, 5.5vw, 3.6rem); }
.contact__sub { color: var(--text-dim); font-size: clamp(1.05rem, 2vw, 1.2rem); margin: 20px auto 36px; max-width: 560px; }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--border); padding: 42px 0; margin-top: 20px; }
.footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer__links { display: flex; gap: 26px; flex-wrap: wrap; }
.footer__links a { color: var(--text-dim); font-weight: 500; font-size: 0.95rem; transition: color 0.2s; }
.footer__links a:hover { color: var(--text); }
.footer__meta { color: var(--text-faint); font-size: 0.9rem; }

/* ---------- Reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .nav__links { display: none; }
  .nav__toggle { display: flex; }
  .cards { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .story__inner { grid-template-columns: 1fr; }
  .story__art { order: 2; }
}
@media (max-width: 480px) {
  .hero__proof { gap: 12px; font-size: 0.8rem; }
  .brand__name { font-size: 1rem; }
}