/* ============================================================
   SKAIWALK · Shared site chrome
   Imports tokens, defines nav + footer + shared layout + motion.
   ============================================================ */
@import url('./tokens.css');

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--sk-bg);
  color: var(--sk-fg);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; color: inherit; }

/* ---------- Page shell ---------- */
.site {
  min-height: 100vh;
  position: relative;
}

/* Atmospheric page background — radial wash, never flat. */
.site::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 50% at 50% 0%,
      rgba(166,211,230,0.18) 0%,
      rgba(166,211,230,0.04) 35%,
      transparent 60%),
    radial-gradient(ellipse 60% 80% at 90% 110%,
      rgba(166,211,230,0.10) 0%,
      transparent 55%),
    linear-gradient(180deg, #FAFCFE 0%, var(--sk-bg) 60%, var(--sk-base-10) 100%);
}

/* ---------- Global nav ---------- */
.sk-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 14px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(247, 250, 252, 0.55);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  border-bottom: 1px solid transparent;
  transition: background 480ms var(--sk-ease-flow),
              border-color 480ms var(--sk-ease-flow);
}
.sk-nav[data-scrolled="true"] {
  background: rgba(247, 250, 252, 0.82);
  border-bottom: 1px solid var(--sk-hairline);
}
.sk-nav__brand {
  display: flex; align-items: center; gap: 10px;
  height: 20px;
}
.sk-nav__brand img {
  height: 16px;
  width: auto;
  opacity: 0.92;
}
.sk-nav__links {
  display: flex; align-items: center; gap: 36px;
  font-size: 13px;
  font-weight: var(--sk-weight-regular);
  color: var(--sk-fg);
}
.sk-nav__link {
  position: relative;
  padding: 4px 0;
  opacity: 0.78;
  transition: opacity 240ms var(--sk-ease-flow);
}
.sk-nav__link:hover { opacity: 1; }
.sk-nav__link[data-active="true"] { opacity: 1; }
.sk-nav__link[data-active="true"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 1px;
  background: var(--sk-accent);
  opacity: 0.7;
}
.sk-nav__cta {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  border-radius: var(--sk-radius-pill);
  border: 1px solid var(--sk-border-strong);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--sk-fg);
  transition: border-color 240ms var(--sk-ease-flow),
              background 240ms var(--sk-ease-flow);
}
.sk-nav__cta:hover {
  border-color: var(--sk-accent);
  background: var(--sk-accent-soft);
}

/* ---------- Section scaffolding ---------- */
.sk-section {
  padding: 120px 48px;
  position: relative;
}
.sk-section--tight { padding: 80px 48px; }
.sk-section--pad-hero { padding: 112px 48px 80px; }

.sk-container {
  max-width: 1240px;
  margin: 0 auto;
}
.sk-container--narrow { max-width: 840px; }
.sk-container--read { max-width: 640px; }

/* ---------- Eyebrow / heading / lede ---------- */
.sk-eyebrow {
  font-family: var(--sk-font-sans);
  font-weight: var(--sk-weight-medium);
  font-size: 11px;
  letter-spacing: var(--sk-tracking-caps);
  text-transform: uppercase;
  color: var(--sk-fg-muted);
}

.sk-display {
  font-weight: var(--sk-weight-semibold);
  font-size: clamp(56px, 7.2vw, 104px);
  line-height: 1.02;
  letter-spacing: -0.02em;
}
.sk-title {
  font-weight: var(--sk-weight-semibold);
  font-size: clamp(40px, 4.4vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.015em;
}
.sk-h2 {
  font-weight: var(--sk-weight-medium);
  font-size: clamp(28px, 2.8vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.01em;
}
.sk-lede {
  font-weight: var(--sk-weight-light);
  font-size: 19px;
  line-height: 1.6;
  color: var(--sk-fg-muted);
}

/* ---------- Horizon line — the signature ---------- */
.sk-horizon {
  display: block;
  width: 100%;
  height: 48px;
  position: relative;
  overflow: visible;
}
.sk-horizon svg {
  display: block;
  width: 100%;
  height: 100%;
  overflow: visible;
}
.sk-horizon path {
  fill: none;
  stroke: var(--sk-accent);
  stroke-width: 1;
  opacity: 0.55;
}

/* ---------- Buttons ---------- */
.sk-btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 24px;
  border-radius: var(--sk-radius-pill);
  font-size: 14px;
  font-weight: var(--sk-weight-medium);
  letter-spacing: 0.01em;
  transition: transform 360ms var(--sk-ease-flow),
              background 360ms var(--sk-ease-flow),
              color 360ms var(--sk-ease-flow),
              border-color 360ms var(--sk-ease-flow);
}
.sk-btn__arrow { transition: transform 360ms var(--sk-ease-flow); }
.sk-btn:hover .sk-btn__arrow { transform: translateX(4px); }
.sk-btn:active { opacity: 0.85; }

.sk-btn--primary {
  background: var(--sk-ink-90);
  color: #fff;
}
.sk-btn--primary:hover { background: #000; }

.sk-btn--ghost {
  border: 1px solid var(--sk-border-strong);
  color: var(--sk-fg);
}
.sk-btn--ghost:hover {
  border-color: var(--sk-accent);
  background: var(--sk-accent-soft);
}

.sk-btn--link {
  padding: 4px 0;
  color: var(--sk-fg);
  font-size: 14px;
  border-bottom: 1px solid transparent;
  border-radius: 0;
}
.sk-btn--link:hover { border-bottom-color: var(--sk-accent); }

/* ---------- Cards (frosted glass) ---------- */
.sk-card {
  position: relative;
  background: var(--sk-glass-soft);
  backdrop-filter: blur(24px) saturate(1.3);
  -webkit-backdrop-filter: blur(24px) saturate(1.3);
  border: 1px solid var(--sk-glass-edge);
  border-radius: var(--sk-radius-lg);
  box-shadow:
    inset 0 1px 0 var(--sk-glass-rim),
    var(--sk-shadow-2);
}

/* ---------- Footer ---------- */
.sk-footer {
  padding: 96px 48px 48px;
  position: relative;
  border-top: 1px solid var(--sk-hairline);
  background: linear-gradient(180deg, transparent, rgba(230,235,241,0.3));
}
.sk-footer__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1.4fr;
  gap: 64px;
  max-width: 1240px;
  margin: 0 auto;
}
.sk-footer__brand img { height: 18px; opacity: 0.9; margin-bottom: 16px; }
.sk-footer__tagline {
  color: var(--sk-fg-muted);
  font-size: 13px;
  font-weight: var(--sk-weight-light);
  max-width: 260px;
  line-height: 1.6;
}
.sk-footer__col h4 {
  font-size: 11px;
  font-weight: var(--sk-weight-medium);
  letter-spacing: var(--sk-tracking-caps);
  text-transform: uppercase;
  color: var(--sk-fg-muted);
  margin-bottom: 20px;
}
.sk-footer__col ul { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.sk-footer__col a {
  color: var(--sk-fg);
  font-size: 14px;
  opacity: 0.82;
  transition: opacity 240ms var(--sk-ease-flow), color 240ms var(--sk-ease-flow);
}
.sk-footer__col a:hover { opacity: 1; color: var(--sk-ink-90); }

.sk-footer__newsletter {
  display: flex; gap: 0;
  background: var(--sk-base-00);
  border: 1px solid var(--sk-border);
  border-radius: var(--sk-radius-pill);
  padding: 4px;
}
.sk-footer__newsletter input {
  flex: 1;
  border: 0;
  background: none;
  padding: 10px 16px;
  font-family: inherit;
  font-size: 13px;
  color: var(--sk-fg);
  outline: none;
}
.sk-footer__newsletter input::placeholder { color: var(--sk-fg-subtle); }
.sk-footer__newsletter button {
  padding: 10px 18px;
  border-radius: var(--sk-radius-pill);
  background: var(--sk-ink-90);
  color: #fff;
  font-size: 12px;
  letter-spacing: 0.02em;
}

.sk-footer__bottom {
  max-width: 1240px;
  margin: 64px auto 0;
  padding-top: 28px;
  border-top: 1px solid var(--sk-hairline);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12px;
  color: var(--sk-fg-subtle);
}
.sk-footer__legal { display: flex; gap: 24px; }
.sk-footer__legal a { opacity: 0.8; }

/* ---------- Reveal-on-scroll ---------- */
.sk-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 900ms var(--sk-ease-flow),
              transform 900ms var(--sk-ease-flow);
}
.sk-reveal[data-visible="true"] {
  opacity: 1;
  transform: translateY(0);
}
.sk-reveal[data-delay="1"] { transition-delay: 80ms; }
.sk-reveal[data-delay="2"] { transition-delay: 160ms; }
.sk-reveal[data-delay="3"] { transition-delay: 240ms; }
.sk-reveal[data-delay="4"] { transition-delay: 320ms; }

/* ---------- Watch render — pure CSS device ---------- */
.sk-watch {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
}
.sk-watch__case {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background:
    radial-gradient(circle at 32% 28%,
      #4a5260 0%, #2c333f 22%, #151a22 55%, #0a0e14 100%);
  box-shadow:
    inset 0 0 0 2px rgba(255,255,255,0.10),
    inset 0 1px 0 rgba(255,255,255,0.18),
    0 30px 80px rgba(35,42,56,0.25),
    0 8px 20px rgba(35,42,56,0.15);
}
.sk-watch__bezel {
  position: absolute;
  inset: 2.5%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 25%,
      rgba(255,255,255,0.85) 0%,
      rgba(220,228,240,0.55) 8%,
      transparent 20%),
    conic-gradient(from 200deg,
      #d9dde4 0deg,
      #8c96a6 60deg,
      #3b4455 120deg,
      #1a1f2a 180deg,
      #5b6576 260deg,
      #b3bbc8 320deg,
      #d9dde4 360deg);
  box-shadow:
    inset 0 0 0 1px rgba(255,255,255,0.2);
}
.sk-watch__glass {
  position: absolute;
  inset: 6%;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 25%,
      rgba(255,255,255,0.16) 0%,
      rgba(255,255,255,0.04) 18%,
      transparent 40%),
    radial-gradient(circle at 72% 78%,
      rgba(166,211,230,0.14) 0%,
      transparent 45%),
    linear-gradient(145deg, #0a0f16 0%, #12202b 60%, #0a0f16 100%);
  overflow: hidden;
  box-shadow:
    inset 0 0 40px rgba(0,0,0,0.6),
    inset 0 1px 0 rgba(255,255,255,0.12);
}
.sk-watch__glass::after {
  /* 2.5D curved glass highlight sweep */
  content: "";
  position: absolute;
  inset: -10%;
  border-radius: 50%;
  background: linear-gradient(135deg,
    transparent 30%,
    rgba(255,255,255,0.12) 45%,
    rgba(255,255,255,0.28) 50%,
    rgba(255,255,255,0.08) 58%,
    transparent 70%);
  pointer-events: none;
}
.sk-watch__screen {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.95);
  font-family: var(--sk-font-sans);
  text-align: center;
  z-index: 2;
}
.sk-watch__time {
  font-weight: 300;
  font-size: clamp(40px, 8vw, 64px);
  letter-spacing: -0.02em;
  line-height: 1;
}
.sk-watch__meta {
  font-size: 10px;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-top: 8px;
}
.sk-watch__horizon {
  position: absolute;
  left: -10%; right: -10%;
  bottom: 28%;
  height: 1px;
  background: linear-gradient(90deg,
    transparent, rgba(166,211,230,0.8), transparent);
  filter: blur(0.5px);
}

/* Crown dot on the side */
.sk-watch__crown {
  position: absolute;
  right: -2%;
  top: 42%;
  width: 4%;
  height: 16%;
  border-radius: 4px 0 0 4px;
  background: linear-gradient(180deg, #6b7280, #2a2f3a);
  box-shadow:
    inset 1px 0 0 rgba(255,255,255,0.25),
    inset -1px 0 0 rgba(0,0,0,0.4);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .sk-nav { padding: 12px 20px; }
  .sk-nav__links { gap: 20px; font-size: 12px; }
  .sk-section { padding: 80px 20px; }
  .sk-footer { padding: 64px 20px 32px; }
  .sk-footer__grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .sk-footer__bottom { flex-direction: column; gap: 16px; align-items: flex-start; }
}
@media (max-width: 640px) {
  .sk-nav__links { display: none; }
  .sk-footer__grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Download section (index page only)
   ============================================================ */
.download {
  padding: 120px 48px;
  max-width: 1280px;
  margin: 0 auto;
}
.download__head {
  text-align: center;
  margin-bottom: 64px;
}
.download__head h2 {
  font-weight: var(--sk-weight-semibold);
  font-size: clamp(40px, 5vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--sk-fg);
  margin: 18px 0 24px;
}
.download__head h2 em {
  font-style: normal;
  font-weight: var(--sk-weight-light);
  color: var(--sk-fg-muted);
  display: block;
}
.download__lede {
  font-size: clamp(15px, 1.4vw, 18px);
  color: var(--sk-fg-muted);
  font-weight: var(--sk-weight-light);
  line-height: 1.6;
  max-width: 560px;
  margin: 0 auto;
}
.download__cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 920px;
  margin: 0 auto;
}
.download-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 40px 36px 36px;
  border-radius: var(--sk-radius-lg);
  background: var(--sk-glass-soft);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border: 1px solid var(--sk-glass-edge);
  text-decoration: none;
  color: inherit;
  transition: transform .35s ease, box-shadow .35s ease, border-color .35s ease;
  position: relative;
}
.download-card:hover {
  transform: translateY(-4px);
  border-color: var(--sk-border-strong);
  box-shadow: var(--sk-shadow-3);
}
.download-card[data-recommended="true"] {
  border-color: var(--sk-accent);
  box-shadow: 0 0 0 1px var(--sk-accent-glow), 0 24px 60px rgba(166,211,230,0.18);
}
.download-card__badge {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sk-accent);
  background: var(--sk-accent-soft);
  padding: 4px 10px;
  border-radius: var(--sk-radius-pill);
  display: none;
}
.download-card[data-recommended="true"] .download-card__badge {
  display: inline-block;
}
.download-card__icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  color: var(--sk-fg);
}
.download-card__platform {
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--sk-fg-subtle);
  margin-bottom: 8px;
}
.download-card__name {
  font-weight: var(--sk-weight-semibold);
  font-size: 24px;
  letter-spacing: -0.01em;
  color: var(--sk-fg);
  margin-bottom: 14px;
}
.download-card__meta {
  font-size: 13px;
  color: var(--sk-fg-muted);
  margin-bottom: 32px;
  display: flex;
  gap: 8px;
}
.download-card__meta .dot-sep { opacity: 0.4; }
.download-card__cta {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: var(--sk-weight-medium);
  color: var(--sk-accent);
}
.download-card__cta svg { transition: transform .25s ease; }
.download-card:hover .download-card__cta svg { transform: translateY(2px); }
.download__notes {
  text-align: center;
  margin: 48px auto 0;
  font-size: 13px;
  color: var(--sk-fg-subtle);
  max-width: 720px;
  line-height: 1.6;
}
@media (max-width: 720px) {
  .download { padding: 80px 20px; }
  .download__cards { grid-template-columns: 1fr; }
  .download-card { padding: 32px 28px 28px; }
}