/* =============================================================
   layout.css — Reset, page regions, section rhythm
   Block 3–4. Structure only (display / position / sizing / spacing).
   Inner typography & color live in components.css. All colors &
   font sizes come from tokens.css.
   ============================================================= */

/* ---------- Reset / base ---------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-white);
  color: var(--color-text-body);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, p { margin: 0; }
img { max-width: 100%; display: block; }
input, textarea, button { font-family: inherit; }
textarea { resize: none; }
::placeholder { color: var(--color-text-secondary); }

::selection { background: var(--color-navy); color: var(--color-white); }

/* ---------- Navigation (fixed bar) ------------------------ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--nav-padding-x);
}
/* White bar behind the nav — opacity driven by scroll.js (0 over hero → 1 past it). */
.nav__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--color-white);
  border-bottom: var(--border-hairline);
  opacity: 0;
  pointer-events: none;
}
.nav__wordmark,
.nav__links { position: relative; z-index: 1; }
.nav__links {
  display: flex;
  align-items: center;
  gap: 36px;
}

/* ---------- Hero (fixed, full viewport) -------------------
   The body scrolls up over the hero; scroll.js drives its drift
   + fade. At rest (scrollY 0) it is the centered hero composition.
   --------------------------------------------------------- */
.hero {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 100vh;
  z-index: 10;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: var(--hero-gap);
  padding: 0 var(--hero-padding-x);
  pointer-events: none;
}
.hero__art {
  height: clamp(300px, 62vh, 600px);
  width: auto;
  flex-shrink: 0;
}
.hero__text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

/* ---------- Home body scrolls over the hero --------------- */
.hero-spacer { height: 100vh; pointer-events: none; }
.home__body {
  position: relative;
  z-index: 40;
  background: var(--color-white);
}
.home__gradient {
  position: absolute;
  left: 0;
  right: 0;
  top: -160px;
  height: 160px;
  z-index: 41;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0), var(--color-white));
  pointer-events: none;
}

/* ---------- Track sections (rendered by tracks.js) --------
   Two-column editorial grid; the illustration column is wider
   (1.05fr) and alternates sides per track via .track--flip.
   --------------------------------------------------------- */
.tracks {
  display: block;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 var(--content-padding-x);
}

.track {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: var(--col-gap);
  align-items: center;
  padding-top: var(--track-pad);
}
.track:first-child { padding-top: var(--track-pad-first); }

.track__text { min-width: 0; grid-column: 1; grid-row: 1; }
.track__illo { grid-column: 2; grid-row: 1; }

/* Flip — illustration on the left, text on the right (Male Fantasy). */
.track--flip { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); }
.track--flip .track__text { grid-column: 2; }
.track--flip .track__illo { grid-column: 1; }

/* Illustration column — the real drawing where one exists; tracks
   without a drawing (Male Fantasy, True Blue) show empty reserved
   space, no placeholder box. */
/* Bottom-aligned within the row (sits low, like the reference), nudged
   up a touch so it doesn't crowd the last player. */
.track__illo {
  align-self: end;
  margin-bottom: 4%;
}
.track__illo-img {
  display: block;
  width: 100%;
  height: auto;
}

/* ---------- Footer (border aligns with track content) ----- */
.footer {
  max-width: var(--content-wide);
  width: calc(100% - var(--content-inset));
  margin: var(--section-rhythm) auto 0;
  padding: 56px 0;
  border-top: var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.footer__socials {
  display: flex;
  align-items: center;
  gap: 22px;
}

/* ---------- Subpages: About / Contact --------------------
   Left-aligned editorial columns under a solid nav (no hero).
   --------------------------------------------------------- */
.page { min-height: 100vh; padding-top: var(--nav-height); }

.about {
  max-width: var(--content-about);
  margin: 0;
  padding: 14vh var(--nav-padding-x) 22vh;
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
}
.about__body {
  max-width: 62ch;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.contact {
  max-width: var(--content-narrow);
  margin: 0;
  padding: 16vh var(--nav-padding-x) 22vh;
}

/* Footer variant for subpages: left-aligned, narrower column. */
.footer--page {
  width: auto;
  max-width: var(--content-about);
  margin: 0;
  padding: 56px var(--nav-padding-x);
}
.footer--narrow { max-width: var(--content-narrow); }

/* ---------- Light responsive fallback --------------------
   Desktop is primary for V1 (PRD non-goal: mobile-first).
   Below 760px, stack the hero and collapse track columns.
   --------------------------------------------------------- */
@media (max-width: 760px) {
  .hero {
    flex-direction: column;
    text-align: center;
    gap: clamp(24px, 6vw, 48px);
  }
  .hero__text { align-items: center; }
  .hero__art { height: clamp(240px, 42vh, 420px); }

  .track,
  .track--flip {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .track__text,
  .track--flip .track__text { grid-column: 1; }
  .track__illo,
  .track--flip .track__illo { grid-column: 1; }
}