/* =====================================================================
   JENNIE — A TIMELINE
   Caribbean turquoise / blue palette. Mobile-first, scales to desktop.
   ===================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Unbounded:wght@300;400;600;800&family=Space+Grotesk:wght@300;400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

:root{
  /* palette — Caribbean turquoise / blue on deep ocean-night */
  --bg-0:#02121a;
  --bg-1:#06212e;
  --bg-2:#082a3a;
  --ink:#eafbff;
  --ink-dim:#8fb9c8;
  --ink-faint:#557884;

  --mint:#23e3cf;
  --cyan:#54c8ff;
  --violet:#9a8cff;

  --glow-mint:rgba(35,227,207,.55);
  --glow-cyan:rgba(84,200,255,.5);

  --glass:rgba(8,22,38,.62);
  --glass-edge:rgba(84,200,255,.26);
  --glass-edge-hot:rgba(35,227,207,.5);

  --f-display:'Unbounded', sans-serif;
  --f-body:'Space Grotesk', sans-serif;
  --f-mono:'Space Mono', monospace;

  --rail-x:22px;            /* left progress rail position */
  --col:min(560px, 90vw);   /* content column width */
}

*{box-sizing:border-box;margin:0;padding:0;}
html,body{height:100%;}
html{scroll-behavior:auto;}

body{
  background:
    radial-gradient(120% 80% at 80% -10%, rgba(154,140,255,.10), transparent 60%),
    radial-gradient(120% 90% at 0% 110%, rgba(35,227,207,.10), transparent 55%),
    linear-gradient(180deg, var(--bg-0), var(--bg-1) 45%, var(--bg-0));
  color:var(--ink);
  font-family:var(--f-body);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  overscroll-behavior-y:none;
  position:relative;
}

/* ---------- ambient canvases (fixed, behind everything) ---------- */
#starfield,#aurora{
  position:fixed; inset:0; width:100%; height:100%;
  pointer-events:none; z-index:0;
}
#aurora{opacity:.0; transition:opacity 1.2s ease;}
body[data-dir="C"] #aurora{opacity:1;}
body[data-dir="B"] #starfield{opacity:1;}
#starfield{opacity:.55; transition:opacity 1.2s ease;}

/* glow trail canvas sits above content but ignores input */
#trail{position:fixed; inset:0; width:100%; height:100%; z-index:60; pointer-events:none; mix-blend-mode:screen;}

/* =====================================================================
   INTRO
   ===================================================================== */
#intro{
  position:fixed; inset:0; z-index:120;
  display:flex; flex-direction:column; align-items:center; justify-content:center;
  gap:.4rem; text-align:center; padding:2rem;
  /* fully opaque curtain so it truly covers the screen, then fades */
  background:
    radial-gradient(circle at 50% 42%, #022030, var(--bg-0) 68%),
    var(--bg-0);
  transition:opacity 1.4s ease, transform 1.4s ease, visibility 1.4s;
}
#intro.gone{opacity:0; transform:scale(1.04); visibility:hidden; pointer-events:none;}

.intro-pre{
  font-family:var(--f-display); font-weight:600; white-space:nowrap;
  font-size:clamp(0.95rem, 4.6vw, 1.5rem); letter-spacing:.04em; text-transform:none;
  color:var(--mint); text-shadow:0 0 24px var(--glow-mint);
  opacity:0; transform:translateY(8px);
  animation:fadeUp .9s ease .3s forwards;
}
.intro-name{
  font-family:var(--f-display); font-weight:800; line-height:.95;
  font-size:clamp(2.1rem, 11vw, 3.8rem); letter-spacing:-.02em;
  white-space:nowrap; max-width:92vw;
  color:var(--mint); text-shadow:0 0 30px var(--glow-mint);
  display:flex; justify-content:center; gap:.02em;
}
.intro-name span{
  opacity:0; transform:translateY(40px) rotateX(-60deg); transform-origin:bottom;
  animation:letterIn .8s cubic-bezier(.2,.8,.2,1) forwards;
}
.intro-ring{
  position:absolute; width:min(78vw,420px); aspect-ratio:1; border-radius:50%;
  border:1px solid var(--glass-edge); opacity:0;
  animation:ringPulse 3s ease .8s infinite, fadeIn 1s ease .8s forwards;
}
.intro-ring.b{width:min(60vw,320px); animation-delay:1.1s,1.1s;}

@keyframes letterIn{to{opacity:1; transform:translateY(0) rotateX(0);}}
@keyframes fadeUp{to{opacity:1; transform:translateY(0);}}
@keyframes fadeIn{to{opacity:.6;}}
@keyframes ringPulse{0%{transform:scale(.7);opacity:.5}70%{opacity:0}100%{transform:scale(1.25);opacity:0}}

/* =====================================================================
   CHROME — progress comet rail
   ===================================================================== */
/* progress comet rail */
.rail{
  position:fixed; left:var(--rail-x); top:12vh; bottom:12vh; width:2px; z-index:70;
  background:linear-gradient(180deg,transparent,rgba(84,200,255,.14) 12%,rgba(84,200,255,.14) 88%,transparent);
  opacity:0; transition:opacity .8s ease;
}
body.lit .rail{opacity:1;}
.rail-fill{
  position:absolute; left:50%; top:0; transform:translateX(-50%);
  width:2px; height:0%;
  background:linear-gradient(180deg,var(--cyan),var(--mint));
  box-shadow:0 0 10px var(--glow-cyan);
}
.comet{
  position:absolute; left:50%; top:0; width:13px; height:13px; margin-left:-6.5px; margin-top:-6.5px;
  border-radius:50%;
  background:radial-gradient(circle,#fff, var(--mint) 40%, rgba(35,227,207,0) 72%);
  box-shadow:0 0 18px 4px var(--glow-mint), 0 0 40px 8px var(--glow-cyan);
}
.comet::after{ /* tail */
  content:""; position:absolute; left:50%; bottom:100%; transform:translateX(-50%);
  width:2px; height:70px;
  background:linear-gradient(180deg,transparent, var(--glow-mint));
  filter:blur(1px);
}
.rail-pct{
  position:absolute; left:14px; top:0; transform:translateY(-50%);
  font-family:var(--f-mono); font-size:.6rem; letter-spacing:.1em; color:var(--cyan);
  text-shadow:0 0 10px var(--glow-cyan); white-space:nowrap;
}

/* =====================================================================
   STAGE + MOMENTS (shared)
   ===================================================================== */
#stage{position:relative; z-index:10;}
.lead{
  min-height:62vh; display:flex; flex-direction:column; align-items:center; justify-content:center;
  text-align:center; padding:16vh 1.5rem 8vh; gap:1rem;
}
.lead h1{
  font-family:var(--f-display); font-weight:300; font-size:clamp(1.7rem,7vw,3rem);
  letter-spacing:.04em; line-height:1.1;
}
.lead h1 b{font-weight:800; background:linear-gradient(120deg,var(--mint),var(--cyan)); -webkit-background-clip:text;background-clip:text;color:transparent;}
.lead p{color:var(--ink-dim); max-width:32ch; font-size:.98rem; letter-spacing:.02em; line-height:1.6;}
.scroll-cue{
  margin-top:1.5rem; font-family:var(--f-mono); font-size:.62rem; letter-spacing:.35em; text-transform:uppercase;
  color:var(--ink-faint); display:flex; flex-direction:column; align-items:center; gap:.6rem;
}
.scroll-cue .chev{width:18px;height:18px;border-right:1.5px solid var(--mint);border-bottom:1.5px solid var(--mint);transform:rotate(45deg);animation:bob 1.8s ease infinite;}
@keyframes bob{0%,100%{transform:translateY(0) rotate(45deg);opacity:.4}50%{transform:translateY(7px) rotate(45deg);opacity:1}}

.timeline{
  position:relative;
  width:var(--col); margin:0 auto; padding:4vh 0 8vh;
  display:flex; flex-direction:column; gap:14vh;
}

/* the moment + card */
.moment{position:relative; will-change:transform, opacity;}
.card{
  position:relative;
  border-radius:20px; overflow:hidden;
  background:var(--glass);
  border:1px solid var(--glass-edge);
  backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px);
  box-shadow:0 24px 60px rgba(0,0,0,.5), 0 0 0 1px rgba(84,200,255,.06), 0 0 40px rgba(35,227,207,.06);
}
.photo{
  position:relative; aspect-ratio:4/5; width:100%;
  background-size:cover; background-position:center;
  background-color:#021a2a;
}
.photo .ph{
  position:absolute; inset:0;
  background:
    radial-gradient(120% 90% at 30% 0%, rgba(84,200,255,.18), transparent 60%),
    radial-gradient(120% 90% at 80% 100%, rgba(35,227,207,.16), transparent 55%),
    repeating-linear-gradient(135deg, rgba(84,200,255,.10) 0 11px, rgba(84,200,255,.02) 11px 22px),
    linear-gradient(160deg,#052533,#04121e);
  display:flex; align-items:center; justify-content:center;
}
.photo .ph span{
  font-family:var(--f-mono); font-size:.62rem; letter-spacing:.22em; text-transform:uppercase;
  color:var(--mint); border:1px dashed rgba(35,227,207,.45); padding:9px 13px; border-radius:8px;
  background:rgba(2,18,26,.5); box-shadow:0 0 22px rgba(35,227,207,.12);
}
.photo::after{ /* sheen */
  content:""; position:absolute; inset:0;
  background:linear-gradient(180deg, transparent 40%, rgba(2,18,26,.82));
}
.meta{position:absolute; left:0; right:0; bottom:0; padding:18px 18px 20px; z-index:2;}
.meta .year{
  font-family:var(--f-mono); font-size:.66rem; letter-spacing:.3em; color:var(--cyan);
  text-shadow:0 0 12px var(--glow-cyan);
}
.meta h3{font-family:var(--f-display); font-weight:600; font-size:1.25rem; margin:.2rem 0 .25rem; letter-spacing:.01em;}
.meta p{color:var(--ink-dim); font-size:.86rem; line-height:1.45; text-wrap:pretty;}
.idx{
  position:absolute; top:12px; right:14px; z-index:2;
  font-family:var(--f-mono); font-size:.62rem; letter-spacing:.15em; color:var(--ink-dim);
  background:rgba(2,18,26,.4); border:1px solid var(--glass-edge); padding:4px 8px; border-radius:999px;
}

/* node bead on the card (for thread direction) */
.node{
  position:absolute; left:calc(var(--rail-x) - var(--col-offset, 0px)); top:34px;
  width:11px;height:11px;border-radius:50%;
  background:radial-gradient(circle,#fff,var(--mint) 55%, transparent 70%);
  box-shadow:0 0 14px var(--glow-mint); opacity:0; display:none;
}

/* =====================================================================
   DIRECTION A — AURORA THREAD (constellation spine)
   central glowing thread, cards alternate, beads light as they enter
   ===================================================================== */
body[data-dir="A"] .timeline{--col:min(620px,92vw);}
body[data-dir="A"] .thread{
  position:absolute; left:50%; top:0; bottom:0; width:2px; transform:translateX(-50%);
  background:linear-gradient(180deg,transparent, rgba(84,200,255,.22) 6%, rgba(35,227,207,.22) 94%, transparent);
  z-index:0;
}
body[data-dir="A"] .timeline{gap:9vh;}
body[data-dir="A"] .moment{width:50%; }
body[data-dir="A"] .moment:nth-child(odd){align-self:flex-start; padding-right:26px; text-align:right;}
body[data-dir="A"] .moment:nth-child(even){align-self:flex-end; padding-left:26px;}
/* Stagger: cards alternate sides in pairs; the second card of each pair starts
   at the vertical center of its partner, and pairs keep the 9vh column gap.
   Half card height = (col/2 - 26px connector padding) * 5/8 (4:5 photo).
   NOTE: .thread is the first child of .timeline, so moments occupy
   nth-child(2..13): even = right (flex-end), odd = left (flex-start). */
body[data-dir="A"] .moment + .moment{
  margin-top:calc(-1 * ((var(--col) / 2 - 26px) * 5 / 8));
}
body[data-dir="A"] .moment:nth-child(odd){
  margin-top:calc(-9vh - ((var(--col) / 2 - 26px) * 5 / 8));
}
body[data-dir="A"] .moment .bead{
  position:absolute; top:30px; width:14px;height:14px;border-radius:50%;
  background:radial-gradient(circle,#fff,var(--mint) 50%, rgba(35,227,207,0) 72%);
  box-shadow:0 0 16px var(--glow-mint), 0 0 36px var(--glow-cyan);
  transform:scale(.3); opacity:0; transition:transform .6s cubic-bezier(.2,.9,.2,1), opacity .6s;
  z-index:3;
}
body[data-dir="A"] .moment:nth-child(odd) .bead{right:-33px;}
body[data-dir="A"] .moment:nth-child(even) .bead{left:-33px;}
body[data-dir="A"] .moment.in .bead{transform:scale(1); opacity:1;}
body[data-dir="A"] .moment .connector{
  position:absolute; top:36px; height:1px; width:26px;
  background:linear-gradient(90deg,var(--glow-mint),transparent);
  opacity:0; transition:opacity .6s ease .1s;
}
body[data-dir="A"] .moment:nth-child(odd) .connector{right:-26px; background:linear-gradient(270deg,var(--glow-mint),transparent);}
body[data-dir="A"] .moment:nth-child(even) .connector{left:-26px;}
body[data-dir="A"] .moment.in .connector{opacity:1;}

/* =====================================================================
   DIRECTION B — DEEP FIELD (3D parallax space journey)
   ===================================================================== */
body[data-dir="B"]{perspective:1100px;}
body[data-dir="B"] #stage{transform-style:preserve-3d;}
body[data-dir="B"] .timeline{gap:24vh; --col:min(520px,88vw);}
body[data-dir="B"] .moment{transform-style:preserve-3d;}
body[data-dir="B"] .card{
  box-shadow:0 40px 90px rgba(0,0,0,.6), 0 0 0 1px var(--glass-edge);
}
body[data-dir="B"] .photo{aspect-ratio:1/1;}

/* =====================================================================
   DIRECTION C — LIQUID GLASS (materializing cards + aurora)
   ===================================================================== */
body[data-dir="C"] .timeline{gap:16vh; --col:min(560px,90vw);}
body[data-dir="C"] .card{
  background:linear-gradient(160deg, rgba(84,200,255,.06), rgba(8,22,38,.5));
  border:1px solid var(--glass-edge);
}
body[data-dir="C"] .photo{aspect-ratio:3/4;}
body[data-dir="C"] .moment .reveal{
  position:absolute; inset:0; z-index:5; pointer-events:none;
  background:linear-gradient(180deg, rgba(35,227,207,.0), rgba(84,200,255,.0));
}
body[data-dir="C"] .moment{filter:saturate(1.05);}

/* =====================================================================
   OUTRO
   ===================================================================== */
.outro{
  text-align:center; padding:2vh 1.5rem 16vh; color:var(--ink-faint);
  font-family:var(--f-mono); font-size:.62rem; letter-spacing:.35em; text-transform:uppercase;
}
.outro .heart{color:var(--mint); font-family:var(--f-body); font-size:1rem; display:block; margin-bottom:.6rem; letter-spacing:0;}

/* Return buttons under the outro */
.outro-nav{
  display:flex; flex-wrap:wrap; justify-content:center; gap:16px;
  margin-top:2.4rem;
}
.outro-btn{
  position:relative; isolation:isolate; overflow:hidden;
  display:inline-flex; align-items:center; gap:.5em;
  font-family:var(--f-body); font-weight:600; font-size:.9rem;
  letter-spacing:.04em; text-transform:none; text-decoration:none;
  color:var(--ink);
  padding:14px 26px; border-radius:14px;
  background:
    linear-gradient(180deg, rgba(35,227,207,.16) 0%, rgba(84,200,255,.10) 100%),
    var(--glass);
  border:1px solid var(--glass-edge-hot);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.14),
    inset 0 0 18px rgba(35,227,207,.10),
    0 6px 18px rgba(2,18,32,.55);
  backdrop-filter:blur(10px); -webkit-backdrop-filter:blur(10px);
  transition:transform .2s ease, border-color .2s ease, box-shadow .2s ease, color .2s ease;
}
.outro-btn:hover{
  transform:translateY(-3px);
  color:#eafff9;
  border-color:var(--mint);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.2),
    inset 0 0 22px rgba(35,227,207,.18),
    0 12px 30px var(--glow-mint);
}
.outro-btn:active{
  transform:translateY(0);
  box-shadow:
    inset 0 2px 8px rgba(0,0,0,.4),
    0 4px 12px rgba(2,18,32,.5);
}

/* =====================================================================
   SCROLL SECTIONS (parchment scroll containers)
   ===================================================================== */
.note-scroll{
  width:var(--col);
  margin:4vh auto;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:24px;
  position:relative;
  z-index:10;
}
.note-scroll.note-first{margin-top:0; padding-bottom:2vh;}
.note-scroll.note-last{padding-top:4vh; padding-bottom:10vh;}
.note-scroll .scl-outer{width:100%; max-width:100%;}

/* =====================================================================
   RESPONSIVE
   ===================================================================== */
@media (max-width:560px){
  :root{--rail-x:16px;}
  /* On phones, Direction A switches to single-column with spine on the left */
  body[data-dir="A"] .timeline{--col:min(440px,90vw); gap:7vh; padding-left:18px;}
  body[data-dir="A"] .thread{left:6px; transform:none;}
  body[data-dir="A"] .moment{width:100%; }
  body[data-dir="A"] .moment:nth-child(odd),
  body[data-dir="A"] .moment:nth-child(even){align-self:stretch; padding:0 0 0 18px; text-align:left;}
  body[data-dir="A"] .moment + .moment,
  body[data-dir="A"] .moment:nth-child(odd){margin-top:0;} /* no stagger in single column */
  body[data-dir="A"] .moment .bead{left:-18px !important; right:auto !important; top:30px;}
  body[data-dir="A"] .moment .connector{left:-12px !important; right:auto !important; width:12px; background:linear-gradient(90deg,var(--glow-mint),transparent)!important;}
}

@media (min-width:561px){
  .rail{left:var(--rail-x);}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important; transition-duration:.2s !important;}
}