/* ============================================================
   swingby design system - Starfield Cinematic + Telemetry
   공유 토큰/컴포넌트. 페이지 고유 스타일(데모 등)은 각 페이지에.
   ============================================================ */

:root {
  color-scheme: dark;

  --space: #05070b;
  --panel: #0d1118;
  --panel-2: #111722;
  --line: rgba(200, 215, 240, 0.14);
  --line-soft: rgba(200, 215, 240, 0.07);
  --star: #eef2fa;
  --dim: #8b95a8;
  --faint: #5c6678;

  --blue: #aee3ff;
  --gold: #f5d469;
  --red: #ff6a4d;

  --accent: var(--blue);
  --accent-ink: #0a1016;
  --accent-soft: rgba(174, 227, 255, 0.12);

  --serif: "Fraunces", Georgia, serif;
  --sans: "Space Grotesk", -apple-system, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;

  --text-micro: 10.5px;
  --text-label-xs: 11px;
  --text-label-sm: 12px;
  --text-caption: 13.5px;
  --text-body: 17px;
  --text-demo: 18px;
}
body[data-product="earshot"] {
  --accent: var(--gold);
  --accent-ink: #181204;
  --accent-soft: rgba(245, 212, 105, 0.12);
}
body[data-product="just-speak"] {
  --accent: var(--red);
  --accent-ink: #1a0c07;
  --accent-soft: rgba(255, 106, 77, 0.12);
}
/* 허브의 제품 카드처럼 한 페이지 안에서 악센트를 바꿀 때 */
.ac-gold { --accent: var(--gold); --accent-ink: #181204; --accent-soft: rgba(245, 212, 105, 0.12); }
.ac-red { --accent: var(--red); --accent-ink: #1a0c07; --accent-soft: rgba(255, 106, 77, 0.12); }

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
[id] { scroll-margin-top: 28px; }

body {
  background: var(--space);
  color: var(--star);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 별가루 - 고정 레이어 (시차 없는 미세한 깊이) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 12% 18%, rgba(238, 242, 250, 0.5), transparent 100%),
    radial-gradient(1px 1px at 31% 64%, rgba(238, 242, 250, 0.28), transparent 100%),
    radial-gradient(1.5px 1.5px at 47% 9%, rgba(238, 242, 250, 0.42), transparent 100%),
    radial-gradient(1px 1px at 58% 41%, rgba(238, 242, 250, 0.22), transparent 100%),
    radial-gradient(1px 1px at 71% 77%, rgba(238, 242, 250, 0.32), transparent 100%),
    radial-gradient(1.5px 1.5px at 83% 26%, rgba(238, 242, 250, 0.45), transparent 100%),
    radial-gradient(1px 1px at 91% 58%, rgba(238, 242, 250, 0.25), transparent 100%),
    radial-gradient(1px 1px at 22% 89%, rgba(238, 242, 250, 0.3), transparent 100%),
    radial-gradient(1px 1px at 66% 94%, rgba(238, 242, 250, 0.2), transparent 100%),
    radial-gradient(600px 380px at 78% -10%, rgba(174, 227, 255, 0.05), transparent 70%);
}
/* 그레인 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 60;
  pointer-events: none;
  opacity: 0.045;
  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='0.8' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)'/%3E%3C/svg%3E");
}

::selection { background: var(--accent); color: var(--accent-ink); }

.wrap { width: min(100%, 1100px); margin: 0 auto; padding: 0 28px; }
.mono { font-family: var(--mono); }

a { color: inherit; }
a,
button,
summary {
  touch-action: manipulation;
  -webkit-tap-highlight-color: rgba(174, 227, 255, 0.18);
}
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 8px;
}
.skip-link {
  position: fixed;
  left: 18px;
  top: 18px;
  z-index: 100;
  transform: translateY(calc(-100% - 36px));
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  font-family: var(--mono);
  font-size: 12px;
  text-decoration: none;
  transition: transform 0.16s ease;
}
.skip-link:focus-visible { transform: none; }

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
  border-radius: 10px;
}

/* ───────── 내비게이션 ───────── */
nav.sb {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  border-bottom: 1px solid var(--line-soft);
}
nav.sb .brand {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--dim);
  text-decoration: none;
}
nav.sb .brand b { color: var(--star); font-weight: 500; }
nav.sb .brand:hover { color: var(--star); }
nav.sb .brand .slash { opacity: 0.4; }
nav.sb .links { display: flex; gap: 26px; align-items: center; font-size: 14px; }
nav.sb .links a { color: var(--dim); text-decoration: none; }
nav.sb .links a:hover { color: var(--star); }
nav.sb .links .buy {
  color: var(--accent-ink);
  background: var(--accent);
  padding: 7px 16px;
  border-radius: 999px;
  font-weight: 600;
}
nav.sb .links .buy:hover { filter: brightness(1.12); }
nav.sb .links .buy.is-disabled {
  color: var(--faint);
  background: var(--panel);
  box-shadow: inset 0 0 0 1px var(--line);
  cursor: not-allowed;
}
nav.sb .links .buy.is-disabled:hover { filter: none; }
nav.sb .links button.buy {
  border: 0;
  font: inherit;
  cursor: pointer;
}

/* ───────── 타이포 ───────── */
.telemetry {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--dim);
}
.telemetry .code { color: var(--accent); }

h1.display {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(46px, 7.2vw, 88px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  text-wrap: balance;
}
h1.display em { font-style: italic; color: var(--accent); }

h2.sec {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.12;
  text-wrap: balance;
}
h2.sec em { font-style: italic; color: var(--accent); }

.lede {
  font-size: 19px;
  color: var(--dim);
  max-width: 56ch;
}
.lede strong { color: var(--star); font-weight: 500; }

/* 섹션 헤더: 텔레메트리 라벨 + 헤드라인 */
section.sb { padding: 110px 0 0; }
.sec-head { margin-bottom: 46px; }
.sec-head .telemetry { display: block; margin-bottom: 16px; }

/* ───────── 궤도 모티프 ───────── */
/* 점선 궤적 + 혜성 점 (섹션 구분선) */
.orbit-divider {
  position: relative;
  border: none;
  border-top: 1px dashed var(--line);
  margin: 110px 0 0;
}
.orbit-divider::after {
  content: "";
  position: absolute;
  right: 0;
  top: -3px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
/* 히어로 뒤 큰 궤도 호 */
.orbit-arc {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 1400px;
  height: 1400px;
  border: 1px solid var(--line-soft);
  border-radius: 50%;
  pointer-events: none;
}
/* 십자 별 */
.cross-star { position: absolute; width: 13px; height: 13px; pointer-events: none; opacity: 0.7; }
.cross-star::before, .cross-star::after {
  content: "";
  position: absolute;
  background: var(--line);
}
.cross-star::before { left: 6px; top: 0; width: 1px; height: 13px; }
.cross-star::after { left: 0; top: 6px; width: 13px; height: 1px; }

/* ───────── 컴포넌트 ───────── */
.btn {
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  border-radius: 10px;
  border: 0;
  padding: 14px 26px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease, border-color 0.15s ease;
}
button.btn { appearance: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.12); }
.btn-ghost { color: var(--star); border: 1px solid var(--line); background: var(--panel); }
.btn-ghost:hover { border-color: var(--faint); }
.btn-disabled,
.btn-disabled:hover,
.btn-disabled:active {
  cursor: not-allowed;
  filter: grayscale(0.25) brightness(0.78);
  opacity: 0.68;
  transform: none;
}
.cta-row { display: flex; gap: 14px; flex-wrap: wrap; align-items: center; }
.cta-note { font-family: var(--mono); font-size: 12.5px; color: var(--faint); }
.btn-block {
  display: flex;
  width: 100%;
  text-align: center;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  transition: border-color 0.2s ease, transform 0.2s ease, background 0.2s ease;
}
.card:hover { border-color: var(--faint); background: var(--panel-2); }

/* 기능 그리드 */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.feature { padding: 28px 26px 32px; }
.feature .signal {
  font-family: var(--mono);
  font-size: var(--text-label-xs);
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.feature h3 { font-size: 18px; font-weight: 600; margin: 14px 0 10px; }
.feature p { font-size: 15px; color: var(--dim); }
.feature p code {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--accent);
}

/* 체크(십자 별) 리스트 */
.includes { list-style: none; }
.includes li {
  padding: 10px 0;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 15px;
  color: var(--dim);
  display: flex;
  gap: 12px;
}
.includes li::before { content: "+"; color: var(--accent); font-weight: 700; font-family: var(--mono); }

/* FAQ */
.faq { max-width: 720px; }
.faq details { border-bottom: 1px solid var(--line-soft); padding: 20px 0; }
.faq summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 16.5px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 20px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--mono); color: var(--accent); }
.faq details[open] summary::after { content: "-"; }
.faq details p { margin-top: 12px; color: var(--dim); font-size: 15px; max-width: 58ch; }

/* 프라이버시 밴드 (full-bleed) */
.privacy-band {
  margin-top: 110px;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, var(--accent-soft), transparent 65%);
}
.privacy-band .inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 90px 28px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}
.privacy-band ul { list-style: none; }
.privacy-band li {
  font-family: var(--mono);
  font-size: 13.5px;
  color: var(--dim);
  padding: 13px 0;
  border-bottom: 1px dashed var(--line-soft);
  display: flex;
  gap: 12px;
}
.privacy-band li::before { content: "→"; color: var(--accent); }
.privacy-copy-title { margin-top: 14px; }
.privacy-copy-text {
  font-size: var(--text-body);
  margin-top: 18px;
  max-width: 46ch;
}

/* 법무 페이지 */
.legal {
  max-width: 820px;
  padding-top: 84px;
}
.legal h1 {
  font-family: var(--serif);
  font-size: clamp(42px, 6vw, 74px);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.01em;
}
.legal h1 em { color: var(--accent); }
.legal .updated {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
}
.legal article {
  margin-top: 56px;
  color: var(--dim);
}
.legal section {
  padding: 34px 0;
  border-top: 1px solid var(--line-soft);
}
.legal h2 {
  color: var(--star);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 14px;
}
.legal p,
.legal li {
  font-size: 16px;
}
.legal ul {
  margin: 12px 0 0 20px;
}
.legal a {
  color: var(--accent);
}
.legal .callout {
  margin-top: 28px;
  padding: 22px 24px;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 14px;
  color: var(--star);
}

/* 가격 카드 */
.price-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 38px 36px;
  position: relative;
  overflow: hidden;
}
.price-card::before {
  content: "EARLY ACCESS";
  position: absolute;
  top: 18px;
  right: -38px;
  transform: rotate(38deg);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 4px 44px;
}
.price-line { display: flex; align-items: baseline; gap: 12px; }
.price { font-family: var(--serif); font-size: 72px; line-height: 1; }
.price,
.price-was,
.price-sub,
.price-fine,
.reqs { font-variant-numeric: tabular-nums; }
.price-was { font-family: var(--mono); font-size: 14px; color: var(--faint); text-decoration: line-through; }
.price-sub { font-family: var(--mono); font-size: 12.5px; color: var(--dim); margin-top: 6px; }
.price-card .includes { margin: 26px 0 30px; }
.price-fine { font-family: var(--mono); font-size: 11.5px; color: var(--faint); margin-top: 14px; }
.pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.reqs { font-family: var(--mono); font-size: 13px; color: var(--dim); line-height: 2.1; }
.reqs b { color: var(--star); font-weight: 500; }

/* 형제 제품 카드 */
.sibling {
  margin-top: 110px;
  padding: 32px 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}
.sibling h3 { font-family: var(--serif); font-weight: 400; font-size: 25px; margin-top: 8px; }
.sibling a.go { color: var(--accent); text-decoration: none; font-weight: 600; white-space: nowrap; }
.sibling a.go:hover { text-decoration: underline; }

/* ───────── 푸터 ───────── */
footer.sb {
  margin-top: 110px;
  padding: 38px 0 60px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
}
footer.sb a { color: var(--dim); text-decoration: none; }
footer.sb a:hover { color: var(--star); }
footer.sb .flinks { display: flex; gap: 22px; }

/* ───────── 모션 ───────── */
.rise {
  opacity: 0;
  transform: translateY(14px);
  animation: sb-rise 0.7s cubic-bezier(0.2, 0.7, 0.2, 1) forwards;
}
@keyframes sb-rise { to { opacity: 1; transform: none; } }
.d1 { animation-delay: 0.05s; }
.d2 { animation-delay: 0.15s; }
.d3 { animation-delay: 0.27s; }
.d4 { animation-delay: 0.4s; }
.d5 { animation-delay: 0.55s; }

.reveal {
  opacity: 1;
  transform: none;
  transition: opacity 0.7s ease, transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.reveal.in { opacity: 1; transform: none; }

.blink { animation: sb-blink 1.6s ease-in-out infinite; }
@keyframes sb-blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }

@media (prefers-reduced-motion: reduce) {
  .rise, .reveal { opacity: 1 !important; transform: none !important; animation: none !important; transition: none !important; }
  .blink { animation: none !important; }
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ───────── 반응형 ───────── */
@media (max-width: 860px) {
  nav.sb {
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 14px;
  }
  nav.sb .links {
    width: 100%;
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 12px 18px;
  }
  .features { grid-template-columns: 1fr; }
  .pricing-grid { grid-template-columns: 1fr; }
  .privacy-band .inner { grid-template-columns: 1fr; padding: 70px 28px; }
  .sibling { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  .wrap { padding: 0 20px; }
  h1.display {
    max-width: 100%;
    font-size: clamp(40px, 12vw, 46px);
    overflow-wrap: normal;
    text-wrap: balance;
  }
  h2.sec {
    font-size: clamp(30px, 9.5vw, 38px);
    overflow-wrap: normal;
    text-wrap: balance;
  }
  .lede {
    max-width: 100%;
    overflow-wrap: normal;
  }
  .telemetry {
    letter-spacing: 0.11em;
    line-height: 1.7;
  }
  .hero .telemetry {
    max-width: 100%;
    flex-wrap: wrap;
  }
  nav.sb {
    align-items: flex-start;
    gap: 18px;
    flex-direction: column;
  }
  nav.sb .links {
    width: 100%;
    gap: 12px;
    flex-wrap: wrap;
  }
  nav.sb .links a,
  nav.sb .links span {
    min-height: 38px;
    display: inline-flex;
    align-items: center;
  }
  nav.sb .links a.buy,
  nav.sb .links span.buy {
    min-height: 38px;
    padding: 7px 14px;
  }
  .cta-row {
    align-items: stretch;
  }
  .cta-row .btn {
    width: 100%;
  }
  .demo,
  .meeting {
    width: 100%;
    max-width: 100%;
  }
  .demo {
    overflow: hidden;
  }
  .demo-bar {
    flex-wrap: wrap;
    gap: 10px;
  }
  .demo-bar .keys {
    min-width: 0;
    white-space: normal;
    overflow-wrap: anywhere;
  }
  .demo-body {
    padding: 28px 18px 30px;
    overflow-wrap: anywhere;
  }
  .grid-call {
    min-width: 0;
    padding: 16px;
  }
  .overlay {
    left: 16px;
    right: 16px;
    bottom: -34px;
    width: auto;
    max-width: none;
    transform: none;
    padding: 14px 16px;
  }
  .overlay .meta {
    flex-wrap: wrap;
    gap: 6px 14px;
  }
  .price-card {
    padding: 34px 24px;
  }
  .price-card::before {
    top: 18px;
    right: 18px;
    transform: none;
    border-radius: 4px;
    padding: 4px 8px;
  }
  .price-line {
    flex-wrap: wrap;
    padding-top: 28px;
  }
  .price-was {
    width: 100%;
  }
  .price {
    font-size: 60px;
  }
  footer.sb .flinks {
    width: 100%;
    flex-wrap: wrap;
  }
}