/* ============================================================
   SILLAGE · the site wears each scent
   Five palettes, swapped by body[data-chapter]; every color
   below rides a CSS variable so the whole page re-tints.
   ============================================================ */
:root {
  --paper: #EFE9DF;
  --paper-deep: #E4DCCE;
  --ink: #2A2118;
  --ink-soft: rgba(42, 33, 24, 0.66);
  --accent: #8A6D3F;
  --hairline: rgba(42, 33, 24, 0.16);

  --font-display: 'Boska', 'Didot', serif;
  --font-body: 'Satoshi', 'Helvetica Neue', sans-serif;

  --tint-ease: 1.4s cubic-bezier(0.45, 0, 0.2, 1);
}
body[data-chapter="1"] {
  --paper: #DFE5D6; --paper-deep: #D2DAC6; --ink: #1E2B1E;
  --ink-soft: rgba(30, 43, 30, 0.66); --accent: #3E5C41;
  --hairline: rgba(30, 43, 30, 0.16);
}
body[data-chapter="2"] {
  --paper: #E6DED4; --paper-deep: #DAD0C2; --ink: #2B211C;
  --ink-soft: rgba(43, 33, 28, 0.66); --accent: #7A4A32;
  --hairline: rgba(43, 33, 28, 0.16);
}
body[data-chapter="3"] {
  --paper: #DCE2E4; --paper-deep: #CDD6DA; --ink: #1C272B;
  --ink-soft: rgba(28, 39, 43, 0.66); --accent: #40606B;
  --hairline: rgba(28, 39, 43, 0.16);
}
body[data-chapter="4"] {
  --paper: #F1E6CE; --paper-deep: #E8D9B8; --ink: #332508;
  --ink-soft: rgba(51, 37, 8, 0.62); --accent: #B07A2A;
  --hairline: rgba(51, 37, 8, 0.16);
}
body[data-chapter="5"] {
  --paper: #EFE9DF; --paper-deep: #E4DCCE; --ink: #2A2118;
  --ink-soft: rgba(42, 33, 24, 0.66); --accent: #8A6D3F;
  --hairline: rgba(42, 33, 24, 0.16);
}

/* ---- reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--tint-ease), color var(--tint-ease);
  overflow-x: hidden;
}
::selection { background: var(--ink); color: var(--paper); }
a { color: inherit; text-decoration: none; }
:focus-visible { outline: 1.5px solid var(--accent); outline-offset: 4px; }
img { max-width: 100%; display: block; }

/* ---- pinned stage ---- */
.stage {
  position: fixed;
  inset: 0;
  display: grid;
  grid-template-columns: minmax(0, 47fr) minmax(0, 53fr);
  grid-template-rows: auto 1fr auto;
  grid-template-areas:
    "head head"
    "frame text"
    "tick tick";
  padding: 0 clamp(20px, 4.5vw, 64px);
  column-gap: clamp(24px, 4vw, 72px);
  z-index: 1;
}

/* ---- header ---- */
.head {
  grid-area: head;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: baseline;
  padding: 24px 0 18px;
  border-bottom: 1px solid var(--hairline);
  transition: border-color var(--tint-ease);
}
.head-left, .head-right a {
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color var(--tint-ease);
}
.head-right { text-align: right; }
.head-right a { color: var(--accent); border-bottom: 1px solid transparent; padding-bottom: 2px; transition: border-color .4s ease, color var(--tint-ease); }
.head-right a:hover { border-color: var(--accent); }
.wordmark {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.6rem;
  letter-spacing: 0.34em;
  text-indent: 0.34em;
  text-align: center;
  color: var(--ink);
  transition: color var(--tint-ease);
}

/* ---- image arch ---- */
.frame-col {
  grid-area: frame;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 0;
  padding: 3.2vh 0 2vh;
}
.arch {
  position: relative;
  width: min(100%, 44vh * 0.78, 560px);
  height: min(76vh, 100%);
  aspect-ratio: 0.78;
  max-height: 76vh;
  border-radius: 999px 999px 0 0;
  overflow: hidden;
  box-shadow: 0 30px 80px -30px rgba(30, 24, 14, 0.45);
  background: var(--paper-deep);
  transition: background-color var(--tint-ease);
}
#dissolve { position: absolute; inset: 0; width: 100%; height: 100%; }
.frame-caption {
  margin-top: 2.2vh;
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color var(--tint-ease), opacity 0.5s ease;
}

/* ---- text column / chapters ---- */
.text-col {
  grid-area: text;
  position: relative;
  min-height: 0;
}
.chapter {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 560px;
  padding: 3vh 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(26px);
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.9s cubic-bezier(0.22, 1, 0.36, 1),
              visibility 0s linear 0.9s;
}
.chapter.active {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.25s,
              transform 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.25s,
              visibility 0s;
}
.eyebrow {
  font-size: 0.6875rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2rem;
  transition: color var(--tint-ease);
}
.display {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2.8rem, 6vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: 0.005em;
  color: var(--ink);
  transition: color var(--tint-ease);
}
.display em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
  transition: color var(--tint-ease);
}
.body-copy {
  margin-top: 2rem;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--ink-soft);
  max-width: 46ch;
  transition: color var(--tint-ease);
}
.direction {
  margin-top: 3rem;
  font-size: 0.6875rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color var(--tint-ease);
}

.notes {
  margin-top: 2.6rem;
  border-top: 1px solid var(--hairline);
  transition: border-color var(--tint-ease);
}
.notes > div {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 18px;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--hairline);
  transition: border-color var(--tint-ease);
}
.notes dt {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.0625rem;
  color: var(--accent);
  transition: color var(--tint-ease);
}
.notes dd {
  font-size: 0.8125rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  align-self: center;
  transition: color var(--tint-ease);
}
.offer {
  margin-top: 1.8rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color var(--tint-ease);
}
.offer .price {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.02em;
  text-transform: none;
  color: var(--ink);
  transition: color var(--tint-ease);
}

/* finale */
.bottles {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 2.4rem;
}
.bottles figure { position: relative; }
.bottles img {
  width: 100%;
  aspect-ratio: 0.72;
  object-fit: cover;
  border-radius: 999px 999px 0 0;
  filter: saturate(0.92);
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
.bottles figure:hover img { transform: translateY(-6px); }
.bottles figcaption {
  margin-top: 10px;
  text-align: center;
  font-size: 0.625rem;
  letter-spacing: 0.24em;
  color: var(--ink-soft);
  transition: color var(--tint-ease);
}
.colophon {
  margin-top: 2.4rem;
  font-size: 0.8125rem;
  line-height: 1.9;
  color: var(--ink-soft);
  max-width: 52ch;
  transition: color var(--tint-ease);
}
.colophon strong { color: var(--ink); font-weight: 600; }
.cta {
  align-self: flex-start;
  margin-top: 1.6rem;
  padding: 14px 30px;
  border: 1px solid var(--ink);
  font-size: 0.6875rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink);
  transition: background-color 0.45s ease, color 0.45s ease, border-color var(--tint-ease);
}
.cta:hover { background: var(--ink); color: var(--paper); }

/* ---- ticker ---- */
.ticker {
  grid-area: tick;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 22px;
  align-items: center;
  padding: 18px 0 22px;
  border-top: 1px solid var(--hairline);
  transition: border-color var(--tint-ease);
}
.ticker-no, .ticker-name {
  font-size: 0.625rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--ink-soft);
  transition: color var(--tint-ease);
}
.ticker-name { font-family: var(--font-display); font-style: italic; font-size: 0.9375rem; letter-spacing: 0.08em; text-transform: none; color: var(--accent); }
.ticker-bar { height: 1px; background: var(--hairline); position: relative; transition: background-color var(--tint-ease); }
.ticker-fill {
  position: absolute;
  left: 0; top: -0.5px;
  height: 2px;
  width: 0%;
  background: var(--accent);
  transition: width 0.4s ease, background-color var(--tint-ease);
}

/* ---- scroll rail (invisible spacers) ---- */
.rail { position: relative; z-index: 0; visibility: hidden; }
.rail section { height: 100vh; }
.rail section:first-child { height: 100vh; }

/* ---- responsive ---- */
@media (max-width: 900px) {
  .stage {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr auto;
    grid-template-areas: "head" "frame" "text" "tick";
    column-gap: 0;
  }
  .head { grid-template-columns: auto 1fr; }
  .head-left { display: none; }
  .wordmark { text-align: left; text-indent: 0; font-size: 1.3rem; }
  .frame-col { padding: 2vh 0 1vh; }
  .arch { height: 34vh; width: auto; max-height: 34vh; }
  .frame-caption { display: none; }
  .chapter { justify-content: flex-start; padding-top: 3vh; max-width: none; }
  .display { font-size: clamp(2.4rem, 9vw, 3.4rem); }
  .body-copy { font-size: 0.9375rem; margin-top: 1.2rem; }
  .eyebrow { margin-bottom: 1rem; }
  .notes { margin-top: 1.4rem; }
  .notes > div { grid-template-columns: 84px 1fr; padding: 0.6rem 0; }
  .bottles { grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 1.2rem; }
  .colophon { font-size: 0.75rem; margin-top: 1rem; }
  #ch-fin .display { font-size: clamp(2rem, 7.5vw, 2.8rem); }
  .ticker { background: var(--paper); position: relative; z-index: 2; }
}

/* ---- reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  body, .chapter, .chapter.active, .ticker-fill { transition: none !important; }
  .bottles img { transition: none; }
}