/* ==========================================================================
   SirusAI — shared site styles v2
   Smooth motion, editorial aesthetic. Tokens come from colors_and_type.css
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: var(--lh-relaxed);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
::selection { background: var(--sirus-gold); color: var(--sirus-ink); }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--space-5); }
.container--narrow { max-width: var(--container-narrow); }
.container--wide   { max-width: var(--container-wide); }
section { padding: clamp(var(--space-8), 4vw + 2rem, var(--space-10)) 0; position: relative; }

/* ---------- PAGE LOAD VEIL ---------- */
.veil {
  position: fixed; inset: 0; z-index: 200;
  background: var(--sirus-ink);
  display: flex; align-items: center; justify-content: center;
  animation: veilOut 900ms 500ms var(--ease-emphasized) both;
  pointer-events: none;
}
.veil img { width: 56px; opacity: 0; animation: veilMark 700ms 60ms var(--ease-emphasized) both; filter: invert(1) brightness(1.6); }
@keyframes veilMark { from { opacity: 0; transform: scale(0.8) rotate(-8deg); } to { opacity: 1; transform: scale(1) rotate(0); } }
@keyframes veilOut { from { opacity: 1; } to { opacity: 0; visibility: hidden; } }

/* ---------- NAV ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-med) var(--ease-standard);
}
.nav.is-scrolled { border-bottom-color: var(--line); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: var(--space-5); }
.nav__brand {
  display: flex; align-items: center; gap: var(--space-3);
  font-weight: 700; letter-spacing: -0.01em; font-size: 1.0625rem; color: var(--fg);
}
.nav__brand:hover .nav__mark { transform: rotate(-10deg) scale(1.08); }
.nav__mark { width: 28px; height: 28px; flex: 0 0 auto; transition: transform var(--dur-med) var(--ease-emphasized); }
.nav__links { display: flex; gap: var(--space-5); align-items: center; font-size: 0.9375rem; }
.nav__links a { color: var(--fg-2); position: relative; padding: 6px 0; transition: color var(--dur-med); }
.nav__links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: 0;
  height: 1.5px; background: var(--sirus-gold);
  transition: right var(--dur-med) var(--ease-emphasized);
}
.nav__links a:hover, .nav__links a.is-active { color: var(--fg); }
.nav__links a:hover::after, .nav__links a.is-active::after { right: 0; }
.nav__cta {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: var(--radius-md);
  background: var(--sirus-ink); color: var(--fg-on-ink);
  font-weight: 500; font-size: 0.9375rem;
  transition: background var(--dur-med), transform var(--dur-fast) var(--ease-exit);
  overflow: hidden; position: relative;
}
.nav__cta:hover { background: #1a253d; }
.nav__cta:active { transform: scale(0.97); }
.nav__cta svg { width: 14px; height: 14px; transition: transform var(--dur-med) var(--ease-emphasized); }
.nav__cta:hover svg { transform: translateX(3px); }
.nav__burger { display: none; width: 36px; height: 36px; align-items: center; justify-content: center; }
.nav__burger svg { width: 22px; height: 22px; }
@media (max-width: 960px) {
  .nav__links, .nav__cta { display: none; }
  .nav__burger { display: inline-flex; }
}

/* Mobile drawer */
.drawer {
  position: fixed; inset: 0; z-index: 100;
  background: var(--sirus-ink); color: var(--fg-on-ink);
  transform: translateY(-100%);
  transition: transform 560ms var(--ease-emphasized);
  padding: var(--space-5); overflow-y: auto;
}
.drawer.is-open { transform: translateY(0); }
.drawer__head { display: flex; justify-content: space-between; align-items: center; height: 72px; }
.drawer__head .nav__brand { color: var(--fg-on-ink); }
.drawer__head .nav__mark { filter: invert(1) brightness(1.5); }
.drawer__links { display: flex; flex-direction: column; gap: 0; margin-top: var(--space-6); }
.drawer__links a {
  display: block; padding: var(--space-4) 0;
  border-bottom: 1px solid var(--sirus-ink-3);
  font-family: var(--font-display);
  font-size: 2.25rem; line-height: 1; letter-spacing: -0.015em;
  opacity: 0; transform: translateY(12px);
  transition: opacity 400ms var(--ease-emphasized), transform 400ms var(--ease-emphasized);
}
.drawer.is-open .drawer__links a { opacity: 1; transform: none; }
.drawer.is-open .drawer__links a:nth-child(1){transition-delay:120ms}
.drawer.is-open .drawer__links a:nth-child(2){transition-delay:170ms}
.drawer.is-open .drawer__links a:nth-child(3){transition-delay:220ms}
.drawer.is-open .drawer__links a:nth-child(4){transition-delay:270ms}
.drawer.is-open .drawer__links a:nth-child(5){transition-delay:320ms}
.drawer.is-open .drawer__links a:nth-child(6){transition-delay:370ms}
.drawer.is-open .drawer__links a:nth-child(7){transition-delay:420ms}
.drawer__links a em { font-style: italic; color: var(--sirus-gold); font-size: 0.5em; vertical-align: super; margin-right: 8px; }

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 24px; border-radius: var(--radius-md);
  font: 500 0.9375rem/1 var(--font-sans);
  border: 1px solid transparent; cursor: pointer;
  position: relative; overflow: hidden;
  transition: transform var(--dur-fast) var(--ease-exit),
              background var(--dur-med), border-color var(--dur-med),
              color var(--dur-med), box-shadow var(--dur-med);
}
.btn svg { width: 14px; height: 14px; transition: transform var(--dur-med) var(--ease-emphasized); }
.btn:hover svg { transform: translateX(4px); }
.btn:active { transform: scale(0.97); }
.btn--ink { background: var(--sirus-ink); color: var(--fg-on-ink); }
.btn--ink:hover { background: #1a253d; box-shadow: 0 8px 24px -8px rgba(13,23,40,0.4); }
.btn--ghost { background: transparent; color: var(--fg); border-color: var(--line-strong); }
.btn--ghost:hover { border-color: var(--sirus-ink); background: var(--sirus-paper-2); }
.btn--gold { background: var(--sirus-gold); color: var(--sirus-ink); border-color: var(--sirus-gold); }
.btn--gold:hover { background: #d6b261; border-color: #d6b261; box-shadow: 0 8px 24px -8px rgba(201,162,75,0.5); }
.btn--ghost-ink { background: transparent; color: var(--fg-on-ink); border-color: var(--sirus-ink-3); }
.btn--ghost-ink:hover { border-color: var(--fg-on-ink-2); background: rgba(255,255,255,0.04); }

/* ---------- EYEBROW / SECTION HEADS ---------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: var(--space-3);
  font: 600 var(--fs-eyebrow)/1 var(--font-sans);
  letter-spacing: var(--tracking-eyebrow); text-transform: uppercase;
  color: var(--fg-3);
}
.eyebrow::before { content: ""; display: block; width: 26px; height: 1px; background: var(--sirus-gold); }
[data-theme="ink"] .eyebrow, .on-ink .eyebrow { color: var(--sirus-gold); }

.sec-head { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-7); align-items: end; }
@media (max-width: 760px) { .sec-head { grid-template-columns: 1fr; gap: var(--space-5); } }
.sec-head__title {
  font-family: var(--font-display); font-weight: 400;
  font-size: var(--fs-display-3);
  line-height: 1.05; letter-spacing: -0.02em;
  max-width: 18ch; color: var(--fg); margin: 0;
}
.sec-head__title em { font-style: italic; }
.sec-head__title .num {
  display: inline-block; font-family: var(--font-display); font-style: italic;
  font-size: 0.55em; color: var(--sirus-gold);
  vertical-align: top; margin-right: 0.5em;
}
.sec-head__sub { color: var(--fg-2); max-width: 52ch; font-size: 1.0625rem; margin: 0; }

/* ---------- REVEAL SYSTEM ---------- */
.reveal {
  opacity: 0; transform: translateY(28px);
  transition: opacity 800ms var(--ease-emphasized), transform 800ms var(--ease-emphasized);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }
.reveal--left { transform: translateX(-32px); }
.reveal--right { transform: translateX(32px); }
.reveal--scale { transform: scale(0.94); }
.reveal--left.is-in, .reveal--right.is-in, .reveal--scale.is-in { transform: none; }

.reveal-stagger > * {
  opacity: 0; transform: translateY(24px);
  transition: opacity 700ms var(--ease-emphasized), transform 700ms var(--ease-emphasized);
}
.reveal-stagger.is-in > * { opacity: 1; transform: none; }
.reveal-stagger.is-in > *:nth-child(1){transition-delay:0ms}
.reveal-stagger.is-in > *:nth-child(2){transition-delay:90ms}
.reveal-stagger.is-in > *:nth-child(3){transition-delay:180ms}
.reveal-stagger.is-in > *:nth-child(4){transition-delay:270ms}
.reveal-stagger.is-in > *:nth-child(5){transition-delay:360ms}
.reveal-stagger.is-in > *:nth-child(6){transition-delay:450ms}
.reveal-stagger.is-in > *:nth-child(7){transition-delay:540ms}
.reveal-stagger.is-in > *:nth-child(8){transition-delay:630ms}

/* word-by-word headline reveal */
.words .w {
  display: inline-block; overflow: hidden; vertical-align: bottom;
}
.words .w > span {
  display: inline-block;
  transform: translateY(110%);
  transition: transform 900ms var(--ease-emphasized);
}
.words.is-in .w > span { transform: translateY(0); }
.words.is-in .w:nth-child(1) > span{transition-delay:0ms}
.words.is-in .w:nth-child(2) > span{transition-delay:70ms}
.words.is-in .w:nth-child(3) > span{transition-delay:140ms}
.words.is-in .w:nth-child(4) > span{transition-delay:210ms}
.words.is-in .w:nth-child(5) > span{transition-delay:280ms}
.words.is-in .w:nth-child(6) > span{transition-delay:350ms}
.words.is-in .w:nth-child(7) > span{transition-delay:420ms}
.words.is-in .w:nth-child(8) > span{transition-delay:490ms}

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-stagger > *, .words .w > span { transition: none !important; opacity: 1 !important; transform: none !important; }
  .veil { display: none; }
}

/* ---------- DRIFTING SHARDS ---------- */
.shards { position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 0; }
.shards .shard {
  position: absolute; background: var(--sirus-ink); opacity: 0.04;
  transform-origin: center;
  animation: drift var(--d, 24s) var(--ease-emphasized) infinite alternate;
}
[data-theme="ink"] .shards .shard, .on-ink .shards .shard { background: var(--sirus-paper); opacity: 0.05; }
@keyframes drift {
  from { transform: translate3d(0,0,0) rotate(var(--r,0deg)); }
  to   { transform: translate3d(var(--dx,30px), var(--dy,-20px), 0) rotate(calc(var(--r,0deg) + 10deg)); }
}

/* ---------- STARFIELD (hero ink sections) ---------- */
.stars { position: absolute; inset: 0; pointer-events: none; overflow: hidden; z-index: 0; }
.stars .star {
  position: absolute; border-radius: 999px;
  background: var(--sirus-gold);
  animation: twinkle var(--td, 3s) ease-in-out infinite alternate;
}
@keyframes twinkle {
  from { opacity: var(--o1, 0.15); transform: scale(1); }
  to   { opacity: var(--o2, 0.7); transform: scale(1.4); }
}

/* ---------- MARQUEE ---------- */
.marquee {
  border-top: 1px solid var(--sirus-ink-3);
  border-bottom: 1px solid var(--sirus-ink-3);
  background: var(--sirus-ink);
  padding: 14px 0; overflow: hidden;
}
.marquee__inner {
  display: flex; align-items: center; gap: var(--space-7);
  white-space: nowrap; width: max-content;
  animation: marquee 55s linear infinite;
}
.marquee:hover .marquee__inner { animation-play-state: paused; }
.marquee__item {
  display: inline-flex; align-items: center; gap: var(--space-3);
  font: 500 0.8125rem/1 var(--font-mono);
  color: #7A8699; letter-spacing: 0.06em; text-transform: uppercase;
}
.marquee__item .gem { display: inline-block; width: 5px; height: 5px; background: var(--sirus-gold); transform: rotate(45deg); }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ---------- PARALLAX MARK ---------- */
.parallax-mark {
  position: absolute; pointer-events: none; z-index: 0;
  will-change: transform;
  transition: transform 200ms linear;
}

/* ---------- TILT CARDS ---------- */
[data-tilt] { transform-style: preserve-3d; transition: transform 300ms var(--ease-standard), border-color var(--dur-med), box-shadow var(--dur-med); }

/* ---------- FOOTER ---------- */
.footer {
  background: var(--sirus-ink); color: var(--fg-on-ink);
  padding: var(--space-9) 0 var(--space-6);
  position: relative; overflow: hidden;
}
.footer__halo {
  position: absolute; right: -20%; top: -50%;
  width: 60%; aspect-ratio: 1;
  background: radial-gradient(circle at center, rgba(201,162,75,0.09) 0%, transparent 60%);
  pointer-events: none;
}
.footer .container { position: relative; }
.footer__top {
  display: grid; grid-template-columns: 1.4fr 1fr;
  gap: var(--space-7); align-items: end;
  padding-bottom: var(--space-7);
  border-bottom: 1px solid var(--sirus-ink-3);
}
@media (max-width: 880px) { .footer__top { grid-template-columns: 1fr; } }
.footer__cta-title {
  font-family: var(--font-display); font-weight: 400;
  font-size: var(--fs-display-3);
  line-height: 1.05; letter-spacing: -0.02em;
  color: var(--fg-on-ink); max-width: 18ch; margin: 0;
}
.footer__cta-title em { font-style: italic; }
.footer__cta-actions { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.footer__grid { margin-top: var(--space-7); display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: var(--space-6); }
@media (max-width: 760px) { .footer__grid { grid-template-columns: 1fr 1fr; } }
.footer__brand { display: flex; align-items: center; gap: var(--space-3); font-weight: 700; font-size: 1.0625rem; color: var(--fg-on-ink); }
.footer__brand .nav__mark { filter: invert(1) brightness(1.5); }
.footer__tag {
  margin-top: var(--space-4);
  font-family: var(--font-display); font-style: italic;
  font-size: 1.25rem; line-height: 1.35; color: var(--fg-on-ink-2); max-width: 28ch;
}
.footer__col h4 {
  margin: 0 0 var(--space-4);
  font: 600 var(--fs-eyebrow)/1 var(--font-sans);
  text-transform: uppercase; letter-spacing: var(--tracking-eyebrow);
  color: var(--fg-3);
}
.footer__col ul { list-style: none; margin: 0; padding: 0; }
.footer__col li { margin-bottom: var(--space-3); }
.footer__col a { font-size: 0.9375rem; color: var(--fg-on-ink-2); transition: color var(--dur-med), padding-left var(--dur-med); }
.footer__col a:hover { color: var(--fg-on-ink); padding-left: 4px; }
.footer__bottom {
  margin-top: var(--space-7); padding-top: var(--space-5);
  border-top: 1px solid var(--sirus-ink-3);
  display: flex; justify-content: space-between; align-items: center;
  font: 400 0.8125rem/1 var(--font-mono); color: var(--fg-3);
  flex-wrap: wrap; gap: var(--space-4);
}
.footer__bottom a { color: var(--fg-3); transition: color var(--dur-med); }
.footer__bottom a:hover { color: var(--fg-on-ink-2); }

/* ---------- COUNT-UP ---------- */
[data-count] { font-variant-numeric: tabular-nums; }

/* ---------- GOLD RULE FLOURISH ---------- */
.rule-star { display: flex; align-items: center; gap: var(--space-4); margin: var(--space-7) 0; }
.rule-star::before, .rule-star::after { content: ''; flex: 1; height: 1px; background: var(--line); }
.rule-star .gem { width: 8px; height: 8px; background: var(--sirus-gold); transform: rotate(45deg); flex: 0 0 auto; }