/* ============ Intra Ai — landing ============ */

/* ---------- NAV ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  transition: background-color 0.5s var(--ease), border-color 0.5s var(--ease), backdrop-filter 0.5s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(5, 5, 5, 0.72);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-color: var(--line);
}
.nav__inner { height: 72px; display: flex; align-items: center; gap: 32px; }
.nav__links { display: flex; gap: 4px; margin-left: auto; }
.nav__links a {
  position: relative; padding: 8px 14px; font-size: 14px; color: var(--ink-2);
  border-radius: 999px; transition: color 0.3s var(--ease), background-color 0.3s var(--ease);
}
.nav__links a:hover { color: var(--white); background: rgba(255,255,255,0.05); }
.nav__actions { display: flex; gap: 10px; }
.nav__burger { display: none; width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--line-2); position: relative; margin-left: auto; }
.nav__burger span { position: absolute; left: 12px; right: 12px; height: 1.5px; background: var(--white); transition: transform 0.4s var(--ease), top 0.4s var(--ease); }
.nav__burger span:first-child { top: 16px; }
.nav__burger span:last-child { top: 22px; }
.nav.is-open .nav__burger span:first-child { top: 19px; transform: rotate(45deg); }
.nav.is-open .nav__burger span:last-child { top: 19px; transform: rotate(-45deg); }
.nav__mobile { display: none; }

/* ---------- DEMO BAR ---------- */
.demo-bar {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  height: 34px; padding: 0 16px;
  font-size: 13px; color: var(--ink-2);
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.demo-short { display: none; }
.demo-tag { font-size: 10px; font-weight: 600; letter-spacing: 0.1em; padding: 2px 8px; border-radius: 6px; background: #fff; color: #000; flex: none; animation: pulse-tag 2.4s var(--ease-in-out) infinite; }
@keyframes pulse-tag { 0%, 100% { box-shadow: 0 0 0 0 rgba(255,255,255,0.4); } 50% { box-shadow: 0 0 0 5px rgba(255,255,255,0); } }

/* ---------- HERO ---------- */
.hero { padding: 170px 0 90px; position: relative; }
.hero__inner { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.hero__title {
  font-size: clamp(40px, 5.4vw, 72px);
  line-height: 1.02; letter-spacing: -0.045em; font-weight: 600;
  margin: 0 0 24px;
  text-wrap: balance;
}
.hero__title .w { display: inline-block; overflow: hidden; vertical-align: bottom; padding-bottom: 0.06em; }
.hero__title .w > span { display: inline-block; transform: translateY(105%); transition: transform 1.1s var(--ease); transition-delay: var(--d, 0s); }
.hero__title.is-in .w > span { transform: none; }

.hero__swap { position: relative; display: inline-block; vertical-align: bottom; overflow: hidden; padding-bottom: 0.06em; }
.hero__swap > span { display: inline-block; background: linear-gradient(90deg, #fff, #8a8a8a 60%, #fff); background-size: 200% 100%; -webkit-background-clip: text; background-clip: text; color: transparent; animation: shimmer 5s linear infinite; transition: transform 0.4s var(--ease), opacity 0.4s var(--ease); }
.hero__swap > span.is-out { transform: translateY(-100%); opacity: 0; }
.hero__swap > span.is-pre { transform: translateY(100%); opacity: 0; transition: none; }
@keyframes shimmer { to { background-position: -200% 0; } }

.hero__lead { font-size: clamp(17px, 1.4vw, 19px); color: var(--ink-2); max-width: 520px; margin: 0 0 36px; }
.hero__cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero__meta { list-style: none; padding: 0; margin: 32px 0 0; display: flex; gap: 22px; flex-wrap: wrap; color: var(--ink-3); font-size: 14px; }
.hero__meta li { display: flex; align-items: center; gap: 7px; }
.hero__meta .icon { width: 16px; height: 16px; color: var(--white); }

/* hero visual */
.hero__visual { position: relative; }
.orbit { position: absolute; inset: -60px; pointer-events: none; }
.orbit__ring { position: absolute; inset: 0; border: 1px dashed rgba(255,255,255,0.1); border-radius: 50%; animation: spin 60s linear infinite; }
.orbit__ring--2 { inset: 60px; animation-duration: 40s; animation-direction: reverse; border-style: solid; border-color: rgba(255,255,255,0.05); }
.orbit__chip {
  position: absolute; width: 48px; height: 48px; border-radius: 14px;
  display: grid; place-items: center;
  background: var(--bg-2); border: 1px solid var(--line-2);
  box-shadow: 0 10px 30px rgba(0,0,0,0.6);
  animation: float 6s var(--ease-in-out) infinite;
  z-index: 3;
}
.orbit__chip .icon { width: 22px; height: 22px; }
.orbit__chip--a { top: 6%; right: 2%; }
.orbit__chip--b { bottom: 4%; left: 4%; animation-delay: -2s; }
.orbit__chip--c { top: 46%; right: -2%; animation-delay: -4s; }
.orbit__chip--c .icon { animation: spin 12s linear infinite; }
.orbit__chip--a .icon { animation: flicker 3s steps(1) infinite; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
@keyframes flicker { 0%, 100% { opacity: 1; } 92% { opacity: 0.2; } 94% { opacity: 1; } 96% { opacity: 0.4; } }

.window {
  position: relative; z-index: 2;
  background: linear-gradient(180deg, rgba(20,20,20,0.92), rgba(8,8,8,0.96));
  border: 1px solid var(--line-2);
  border-radius: var(--r-lg);
  box-shadow: 0 40px 120px rgba(0,0,0,0.8), 0 0 0 1px rgba(255,255,255,0.03) inset;
  overflow: hidden;
  backdrop-filter: blur(20px);
}
.window::before {
  content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px; pointer-events: none;
  background: conic-gradient(from var(--a, 0deg), transparent 0 70%, rgba(255,255,255,0.7) 85%, transparent 100%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  animation: border-spin 6s linear infinite;
}
@property --a { syntax: "<angle>"; inherits: false; initial-value: 0deg; }
@keyframes border-spin { to { --a: 360deg; } }

.window__bar { display: flex; align-items: center; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.window__dots { display: flex; gap: 6px; }
.window__dots i { width: 10px; height: 10px; border-radius: 50%; border: 1px solid var(--line-2); }
.window__title { font-size: 12px; color: var(--ink-3); flex: 1; text-align: center; }
.window__status { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--ink-2); }
.window__status i { width: 7px; height: 7px; border-radius: 50%; background: var(--white); box-shadow: 0 0 0 0 rgba(255,255,255,0.6); animation: ping 2s infinite; }
@keyframes ping { 0% { box-shadow: 0 0 0 0 rgba(255,255,255,0.5); } 100% { box-shadow: 0 0 0 8px rgba(255,255,255,0); } }

.window__body { height: 340px; padding: 20px 18px; display: flex; flex-direction: column; gap: 12px; overflow: hidden; justify-content: flex-end; }
.msg { display: flex; gap: 10px; align-items: flex-end; max-width: 88%; animation: msg-in 0.6s var(--ease) both; }
.msg--user { align-self: flex-end; flex-direction: row-reverse; }
.msg__av { width: 28px; height: 28px; border-radius: 50%; flex: none; display: grid; place-items: center; border: 1px solid var(--line-2); background: var(--bg-3); }
.msg__av svg { width: 18px; height: 18px; }
.msg--user .msg__av { background: var(--white); color: var(--black); font-size: 12px; font-weight: 600; }
.msg__b { padding: 10px 14px; border-radius: 16px; font-size: 14px; line-height: 1.5; background: var(--bg-3); border: 1px solid var(--line); }
.msg--user .msg__b { background: var(--white); color: var(--black); border-color: transparent; border-bottom-right-radius: 4px; }
.msg--bot .msg__b { border-bottom-left-radius: 4px; }
.msg__b ul { margin: 6px 0 0; padding-left: 18px; }
@keyframes msg-in { from { opacity: 0; transform: translateY(12px) scale(0.98); filter: blur(4px); } to { opacity: 1; transform: none; filter: none; } }

.dots { display: inline-flex; gap: 4px; padding: 4px 0; }
.dots i { width: 6px; height: 6px; border-radius: 50%; background: var(--ink-2); animation: bounce 1.2s var(--ease-in-out) infinite; }
.dots i:nth-child(2) { animation-delay: 0.15s; }
.dots i:nth-child(3) { animation-delay: 0.3s; }
@keyframes bounce { 0%, 80%, 100% { transform: translateY(0); opacity: 0.4; } 40% { transform: translateY(-5px); opacity: 1; } }

.window__input { margin: 0 14px 14px; height: 50px; border: 1px solid var(--line-2); border-radius: 14px; display: flex; align-items: center; padding: 0 8px 0 16px; font-size: 14px; color: var(--ink-2); }
.window__typing { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.caret { width: 1.5px; height: 18px; background: var(--white); margin-left: 2px; animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
.window__send { margin-left: auto; width: 34px; height: 34px; border-radius: 10px; background: var(--white); color: var(--black); display: grid; place-items: center; flex: none; }
.window__send svg { width: 16px; height: 16px; }

/* ---------- MARQUEE ---------- */
.marquee { border-block: 1px solid var(--line); overflow: hidden; padding: 22px 0; mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee__track { display: flex; width: max-content; animation: marquee 40s linear infinite; }
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee__row { display: flex; align-items: center; gap: 36px; padding-right: 36px; font-size: 20px; font-weight: 500; letter-spacing: -0.02em; color: var(--ink-2); white-space: nowrap; }
.marquee__row b { color: var(--ink-3); font-weight: 400; font-size: 14px; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- SECTIONS ---------- */
.section { padding: 130px 0 40px; scroll-margin-top: 40px; }
.section__head { text-align: center; max-width: 720px; margin: 0 auto 64px; }
.section__head--left { text-align: left; margin: 0; }
.eyebrow { display: inline-block; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 18px; }
.section h2 { font-size: clamp(34px, 4.4vw, 56px); line-height: 1.05; letter-spacing: -0.04em; font-weight: 600; margin: 0 0 18px; text-wrap: balance; }
.section__head p { color: var(--ink-2); font-size: 18px; margin: 0; }

/* ---------- BENTO ---------- */
.bento { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card {
  position: relative; padding: 30px; border-radius: var(--r-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.035), rgba(255,255,255,0.01));
  border: 1px solid var(--line);
  overflow: hidden;
  transition: border-color 0.5s var(--ease), transform 0.6s var(--ease), opacity 1s var(--ease), filter 1s var(--ease);
}
.card::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: 0;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 50%), rgba(255,255,255,0.08), transparent 45%);
  transition: opacity 0.4s var(--ease);
}
.card:hover { border-color: var(--line-2); }
.card:hover::after { opacity: 1; }
.card--wide { grid-column: span 2; grid-row: span 1; display: grid; grid-template-columns: 1fr 1fr; column-gap: 30px; }
.card--wide .card__icon, .card--wide h3, .card--wide p { grid-column: 1; }
.card--wide .card__viz { grid-column: 2; grid-row: 1 / span 3; }
.card h3 { font-size: 20px; letter-spacing: -0.02em; margin: 22px 0 8px; font-weight: 600; }
.card p { margin: 0; color: var(--ink-2); font-size: 15px; }
.card__icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: grid; place-items: center;
  border: 1px solid var(--line-2);
  background: var(--bg-2);
  transition: transform 0.6s var(--ease), background-color 0.4s var(--ease), color 0.4s var(--ease);
}
.card__icon .icon { width: 26px; height: 26px; }
.card:hover .card__icon { transform: translateY(-3px) rotate(-6deg); background: var(--white); color: var(--black); }

/* per-icon idle animations */
.ic-bolt .icon { animation: flicker 3.2s steps(1) infinite; }
.ic-brain .icon { animation: pulse-soft 3s var(--ease-in-out) infinite; }
@keyframes pulse-soft { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.08); } }
.ic-code .icon { animation: nudge 2.4s var(--ease-in-out) infinite; }
@keyframes nudge { 0%, 100% { transform: translateX(0); } 50% { transform: translateX(2px); } }
.ic-chart .bar { transform-box: fill-box; transform-origin: bottom; animation: grow 2.4s var(--ease-in-out) infinite; }
.ic-chart .bar--2 { animation-delay: 0.2s; }
.ic-chart .bar--3 { animation-delay: 0.4s; }
@keyframes grow { 0%, 100% { transform: scaleY(1); } 50% { transform: scaleY(0.5); } }
.ic-globe .meridians { transform-box: fill-box; transform-origin: center; animation: squash 3s var(--ease-in-out) infinite; }
@keyframes squash { 0%, 100% { transform: scaleX(1); } 50% { transform: scaleX(0.2); } }
.ic-shield .icon { animation: pulse-soft 3.4s var(--ease-in-out) infinite; }

.viz-thread { display: flex; flex-direction: column; gap: 8px; justify-content: center; }
.viz-thread .b { font-size: 13px; padding: 8px 12px; border-radius: 12px; max-width: 90%; opacity: 0; transform: translateY(10px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.viz-thread .b--u { align-self: flex-end; background: var(--white); color: var(--black); }
.viz-thread .b--a { align-self: flex-start; border: 1px solid var(--line-2); color: var(--ink-2); }
.card.is-in .viz-thread .b { opacity: 1; transform: none; }
.card.is-in .viz-thread .b:nth-child(1) { transition-delay: 0.4s; }
.card.is-in .viz-thread .b:nth-child(2) { transition-delay: 0.9s; }
.card.is-in .viz-thread .b:nth-child(3) { transition-delay: 1.4s; }
.card.is-in .viz-thread .b:nth-child(4) { transition-delay: 1.9s; }

/* ---------- STEPS ---------- */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; position: relative; }
.steps::before {
  content: ""; position: absolute; top: 58px; left: 16%; right: 16%; height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-2), transparent);
  transform: scaleX(0); transform-origin: left; transition: transform 1.6s var(--ease) 0.3s;
}
.steps.is-in::before { transform: scaleX(1); }
.step { position: relative; text-align: center; padding: 0 18px; }
.step__num { font-size: 12px; color: var(--ink-3); letter-spacing: 0.08em; }
.step__icon {
  position: relative; width: 68px; height: 68px; margin: 14px auto 22px; border-radius: 50%;
  display: grid; place-items: center; background: var(--bg); border: 1px solid var(--line-2);
  transition: background-color 0.4s var(--ease), color 0.4s var(--ease), transform 0.5s var(--ease);
}
.step__icon::after { content: ""; position: absolute; inset: -6px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.12); animation: ping-ring 3s var(--ease) infinite; }
.step:nth-child(2) .step__icon::after { animation-delay: 1s; }
.step:nth-child(3) .step__icon::after { animation-delay: 2s; }
@keyframes ping-ring { 0% { transform: scale(0.9); opacity: 1; } 100% { transform: scale(1.4); opacity: 0; } }
.step:hover .step__icon { background: var(--white); color: var(--black); transform: scale(1.06); }
.step h3 { font-size: 20px; margin: 0 0 8px; letter-spacing: -0.02em; font-weight: 600; }
.step p { margin: 0 auto; color: var(--ink-2); font-size: 15px; max-width: 280px; }

/* ---------- NUMBERS ---------- */
.numbers { padding: 120px 0 0; }
.numbers__grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); border-radius: var(--r-lg); overflow: hidden; }
.num { padding: 38px 30px; border-right: 1px solid var(--line); }
.num:last-child { border-right: 0; }
.num b { display: block; font-size: clamp(40px, 4.5vw, 60px); font-weight: 500; letter-spacing: -0.05em; line-height: 1; margin-bottom: 14px; }
.num span { color: var(--ink-2); font-size: 14px; }

/* ---------- FAQ ---------- */
.faq { display: grid; grid-template-columns: 1fr 1.4fr; gap: 64px; align-items: start; }
.faq__list { border-top: 1px solid var(--line); }
.qa { border-bottom: 1px solid var(--line); }
.qa summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 24px 0; font-size: 18px; font-weight: 500; letter-spacing: -0.01em; transition: color 0.3s var(--ease); }
.qa summary::-webkit-details-marker { display: none; }
.qa summary:hover { color: var(--white); }
.qa summary i { position: relative; width: 28px; height: 28px; border-radius: 50%; border: 1px solid var(--line-2); flex: none; transition: transform 0.5s var(--ease), background-color 0.3s var(--ease); }
.qa summary i::before, .qa summary i::after { content: ""; position: absolute; left: 50%; top: 50%; width: 10px; height: 1.5px; background: currentColor; transform: translate(-50%, -50%); transition: transform 0.5s var(--ease); }
.qa summary i::after { transform: translate(-50%, -50%) rotate(90deg); }
.qa[open] summary i { transform: rotate(180deg); background: var(--white); color: var(--black); }
.qa[open] summary i::after { transform: translate(-50%, -50%) rotate(0deg); }
.qa__body { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.5s var(--ease); }
.qa__body > p { overflow: hidden; margin: 0; color: var(--ink-2); padding-right: 40px; }
.qa.is-open .qa__body { grid-template-rows: 1fr; }
.qa.is-open .qa__body > p { padding-bottom: 24px; }

/* ---------- CTA ---------- */
.cta { padding: 140px 0 100px; }
.cta__box {
  position: relative; overflow: hidden; text-align: center;
  padding: 100px 30px; border-radius: 32px;
  border: 1px solid var(--line-2);
  background: radial-gradient(ellipse at 50% 120%, rgba(255,255,255,0.12), transparent 60%), var(--bg-2);
}
.cta__box h2 { position: relative; font-size: clamp(36px, 5vw, 64px); letter-spacing: -0.045em; line-height: 1.02; margin: 0 0 16px; font-weight: 600; }
.cta__box p { position: relative; color: var(--ink-2); font-size: 18px; margin: 0 0 36px; }
.cta__rings { position: absolute; left: 50%; top: 100%; }
.cta__rings span { position: absolute; left: 0; top: 0; width: 300px; height: 300px; border-radius: 50%; border: 1px solid rgba(255,255,255,0.12); transform: translate(-50%, -50%) scale(0.5); animation: ring-out 6s var(--ease) infinite; }
.cta__rings span:nth-child(2) { animation-delay: 2s; }
.cta__rings span:nth-child(3) { animation-delay: 4s; }
@keyframes ring-out { 0% { transform: translate(-50%, -50%) scale(0.5); opacity: 1; } 100% { transform: translate(-50%, -50%) scale(4); opacity: 0; } }

/* ---------- FOOTER ---------- */
.footer { border-top: 1px solid var(--line); padding: 40px 0; }
.footer__inner { display: flex; align-items: center; gap: 32px; flex-wrap: wrap; }
.footer__links { display: flex; gap: 24px; margin-left: auto; font-size: 14px; color: var(--ink-2); }
.footer__links a:hover { color: var(--white); }
.footer__copy { width: 100%; margin: 12px 0 0; font-size: 12px; color: var(--ink-3); }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1020px) {
  .hero__inner { grid-template-columns: 1fr; gap: 80px; }
  .hero__visual { max-width: 560px; width: 100%; margin: 0 auto; }
  .bento { grid-template-columns: 1fr 1fr; }
  .card--wide { grid-column: span 2; }
  .faq { grid-template-columns: 1fr; gap: 32px; }
  .numbers__grid { grid-template-columns: 1fr 1fr; }
  .num:nth-child(2) { border-right: 0; }
  .num:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
}
@media (max-width: 820px) {
  .nav__links, .nav__actions { display: none; }
  .nav__burger { display: block; }
  .nav__mobile {
    display: grid; gap: 4px; padding: 0 20px;
    max-height: 0; overflow: hidden; opacity: 0;
    background: rgba(5,5,5,0.96); backdrop-filter: blur(16px);
    transition: max-height 0.6s var(--ease), opacity 0.4s var(--ease), padding 0.6s var(--ease);
  }
  .nav__mobile a:not(.btn) { padding: 12px 0; font-size: 18px; border-bottom: 1px solid var(--line); }
  .nav__mobile .btn { margin-top: 14px; }
  .nav.is-open { background: rgba(5,5,5,0.96); border-color: var(--line); }
  .nav.is-open .nav__mobile { max-height: 480px; opacity: 1; padding: 8px 20px 24px; }
}
@media (max-width: 640px) {
  .hero { padding: 140px 0 70px; }
  .demo-bar { font-size: 12px; }
  .demo-long { display: none; }
  .demo-short { display: inline; }
  .hero__cta .btn { flex: 1 1 100%; }
  .window__body { height: 300px; }
  .orbit { inset: -24px; }
  .orbit__chip { width: 40px; height: 40px; border-radius: 12px; }
  .orbit__chip--c { right: -10px; }
  .bento { grid-template-columns: 1fr; }
  .card--wide { grid-column: span 1; grid-template-columns: 1fr; }
  .card--wide .card__viz { grid-column: 1; grid-row: auto; margin-top: 24px; }
  .steps { grid-template-columns: 1fr; gap: 40px; }
  .steps::before { display: none; }
  .numbers__grid { grid-template-columns: 1fr; }
  .num { border-right: 0; border-bottom: 1px solid var(--line); }
  .num:last-child { border-bottom: 0; }
  .section { padding-top: 100px; }
  .cta__box { padding: 70px 22px; }
  .footer__links { margin-left: 0; flex-wrap: wrap; }
  .marquee__row { font-size: 17px; }
}