:root {
  --cream: #F8F5F0;
  --overlay: rgba(0, 0, 0, 0.4);
  --serif: "EB Garamond", Garamond, "Times New Roman", serif;
  --gutter-x: clamp(20px, 4vw, 64px);
  --gutter-y: clamp(24px, 4vw, 56px);
  --fade: 900ms;
  --tracking: 0.22em;
}

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

html,
body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  overscroll-behavior: none;
}

body {
  background: #000;
  color: var(--cream);
  font-family: var(--serif);
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

/* Fixed background: poster underneath, video fades in once it actually plays */
.backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: #000 url("assets/poster.jpg") center / cover no-repeat;
}

.backdrop-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 600ms ease;
}

.backdrop-video.is-playing { opacity: 1; }

.backdrop-overlay {
  position: absolute;
  inset: 0;
  background: var(--overlay);
}

/* Foreground layout: header / space / panels / bottom row */
.page {
  position: relative;
  z-index: 1;
  height: 100vh;
  height: 100dvh;
  display: grid;
  grid-template-rows: auto 1fr auto auto;
  padding:
    calc(var(--gutter-y) + env(safe-area-inset-top))
    calc(var(--gutter-x) + env(safe-area-inset-right))
    calc(var(--gutter-y) + env(safe-area-inset-bottom))
    calc(var(--gutter-x) + env(safe-area-inset-left));
  touch-action: pinch-zoom;
}

.top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
}

.logo {
  display: block;
  width: 220px;
  height: auto;
}

.nav {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 10px;
  padding-top: 4px;
}

.nav a {
  color: var(--cream);
  text-decoration: none;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: var(--tracking);
  line-height: 1;
  opacity: 0.9;
  transition: opacity 200ms ease;
}

.nav a:hover,
.nav a:focus-visible { opacity: 1; text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 1px; }

/* Panels share one grid cell so the block is as tall as the longest panel */
.panels {
  grid-row: 3;
  display: grid;
  max-width: 560px;
}

.panel {
  grid-area: 1 / 1;
  align-self: end;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--fade) ease, visibility 0s linear var(--fade);
}

.panel.is-active {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--fade) ease, visibility 0s;
}

.panel p {
  margin: 0;
  font-size: 24px;
  line-height: 1.55;
  font-weight: 400;
  text-wrap: pretty;
}

.bottom {
  grid-row: 4;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: end;
  gap: 16px;
  margin-top: clamp(28px, 5vh, 56px);
  font-size: 14px;
  letter-spacing: 0.04em;
}

.copyright {
  justify-self: start;
  font-size: 12px;
  opacity: 0;
  transition: opacity var(--fade) ease;
}

body[data-panel="3"] .copyright { opacity: 0.75; }

.location {
  justify-self: end;
  margin: 0;
  white-space: nowrap;
  letter-spacing: var(--tracking);
}

.chevron {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin: -12px 0;
  padding: 0;
  border: 0;
  background: none;
  color: var(--cream);
  cursor: pointer;
  opacity: 0.85;
  transition: opacity 200ms ease;
}

.chevron:hover { opacity: 1; }

.chevron svg { transition: transform 500ms ease; }

body[data-panel="3"] .chevron svg { transform: rotate(180deg); }

:focus-visible { outline: 1px solid var(--cream); outline-offset: 4px; }

/* Phones */
@media (max-width: 600px) {
  .logo { width: 150px; }
  .nav { gap: 9px; padding-top: 2px; }
  :root { --tracking: 0.2em; }
  .nav a { font-size: 11px; }
  .panel p { font-size: 21.5px; line-height: 1.5; }
  /* Chevron gets its own row so the footer and location never collide */
  .bottom {
    grid-template-columns: auto auto;
    grid-template-areas: "chevron chevron" "copyright location";
    justify-content: space-between;
    row-gap: 14px;
    column-gap: 12px;
    font-size: 13px;
  }
  .chevron { grid-area: chevron; justify-self: center; margin: 0; }
  .copyright { grid-area: copyright; }
  .location { grid-area: location; }
  .copyright { font-size: 11px; }
}

/* Short screens, e.g. a phone in landscape */
@media (max-height: 520px) {
  .logo { width: 130px; }
  .panels { max-width: 620px; }
  .panel p { font-size: 19px; line-height: 1.4; }
  .bottom { margin-top: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .backdrop-video { display: none; }
  :root { --fade: 1ms; }
  .chevron svg { transition: none; }
}