/* Atlantea graphic novel — multi-theme, mobile-first */
:root,:root[data-theme="abyss"]{--bg:#0a1422;--panel:#122033;--ink:#dfe8f2;--mut:#8aa0b8;--accent:#38e1c6;--accent2:#7db4ff;--line:rgba(223,232,242,.14);--shadow:rgba(0,0,0,.5);--cap:#0d1a2b}
:root[data-theme="lantern"]{--bg:#07110c;--panel:#0e1e14;--ink:#eaf6df;--mut:#93b58f;--accent:#b6ff5a;--accent2:#ffd24a;--line:rgba(234,246,223,.14);--shadow:rgba(0,0,0,.55);--cap:#0b170f}
:root[data-theme="coral"]{--bg:#150a11;--panel:#241019;--ink:#f6e6ec;--mut:#c397a7;--accent:#ff6f8b;--accent2:#ffb37a;--line:rgba(246,230,236,.14);--shadow:rgba(0,0,0,.5);--cap:#1d0d15}
:root[data-theme="amber"]{--bg:#17120b;--panel:#241b10;--ink:#f0e6d2;--mut:#c1a983;--accent:#f2b04a;--accent2:#e08a5a;--line:rgba(240,230,210,.14);--shadow:rgba(0,0,0,.5);--cap:#201810}
:root[data-theme="pearl"]{--bg:#eef3f7;--panel:#fff;--ink:#10202e;--mut:#5b7186;--accent:#0a8f7e;--accent2:#2f6bd6;--line:rgba(16,32,46,.14);--shadow:rgba(20,40,60,.14);--cap:#ffffff}
:root[data-theme="burntdark"]{--bg:#1a1206;--panel:#241a0d;--ink:#f6ece0;--mut:#c2a884;--accent:#f2681e;--accent2:#ffb15c;--line:rgba(246,236,224,.14);--shadow:rgba(0,0,0,.55);--cap:#1c1408}
:root[data-theme="burntlight"]{--bg:#f7f1e6;--panel:#fffdf8;--ink:#2b1a0a;--mut:#7a5c3a;--accent:#bf5700;--accent2:#a34700;--line:rgba(43,26,10,.14);--shadow:rgba(120,80,40,.16);--cap:#fffdf8}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:Newsreader,Georgia,serif;font-size:1.15rem;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;transition:background .4s,color .4s;padding-bottom:30px}
a{color:var(--accent2);text-decoration:none}svg{max-width:100%}
.bar{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 16px;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.bar .home{font-family:Fraunces,serif;font-weight:900;font-size:1.22rem;color:var(--ink)}
.nav{display:flex;align-items:center;gap:4px;flex-wrap:wrap;justify-content:flex-end}
.nav a{font-family:"Space Mono",monospace;font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:var(--mut);padding:7px 9px;border-radius:999px}
.nav a:hover,.nav a.on{color:var(--ink)}
.nav a.on{border:1px solid var(--line)}
.pk{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--accent);font-size:1.05rem;cursor:pointer;margin-left:4px}
.pk:hover{border-color:var(--accent)}
.wrap{max-width:760px;margin:0 auto;padding:0 20px}

/* cover */
.cover{position:relative;min-height:80vh;display:flex;align-items:flex-end;overflow:hidden}
.hero-art{position:absolute;inset:0;z-index:0}.hero-art svg{width:100%;height:100%;display:block}
.cover-copy{position:relative;z-index:2;max-width:800px;margin:0 auto;width:100%;padding:44px 20px 46px;text-align:center;background:linear-gradient(180deg,transparent,color-mix(in srgb,var(--bg) 90%,transparent) 58%)}
.kicker{font-family:"Space Mono",monospace;font-size:.7rem;letter-spacing:.28em;text-transform:uppercase;color:var(--accent);margin:0 0 12px}
.book-title{font-family:Fraunces,serif;font-weight:900;font-size:clamp(3.4rem,16vw,7.5rem);line-height:.86;margin:0;letter-spacing:-.02em;text-shadow:0 6px 50px var(--shadow)}
.book-sub{font-family:Fraunces,serif;font-style:italic;font-weight:400;font-size:clamp(1.15rem,4.8vw,1.8rem);margin:.35em 0 0;opacity:.95}
.tagline{color:var(--ink);max-width:52ch;margin:18px auto 0;font-size:1.05rem;opacity:.92}
.cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:26px}
.begin{display:inline-block;background:var(--accent);color:#06121a;font-family:"Space Mono",monospace;font-weight:700;letter-spacing:.04em;padding:14px 26px;border-radius:999px;font-size:.9rem}
.begin:hover{filter:brightness(1.08)}
.ghost-a{display:inline-block;border:1px solid var(--line);color:var(--ink);font-family:"Space Mono",monospace;font-size:.86rem;padding:14px 22px;border-radius:999px}
.ghost-a:hover{border-color:var(--accent)}

/* issues strip */
.issues{padding:48px 0 8px}
.issues h2,.what h2{font-family:"Space Mono",monospace;font-size:.76rem;letter-spacing:.2em;text-transform:uppercase;color:var(--mut);margin:0 0 18px}
.issue-card{display:grid;grid-template-columns:110px 1fr;gap:16px;align-items:center;padding:12px;border:1px solid var(--line);border-radius:16px;background:var(--panel);margin-bottom:14px;color:var(--ink)}
.issue-card:hover{border-color:var(--accent)}
.issue-card.soon{opacity:.6}
.ic-art{border-radius:10px;overflow:hidden;aspect-ratio:1200/700;background:var(--bg)}
.ic-art svg{width:100%;height:100%;display:block}
.ic-art.dim{filter:grayscale(.4) brightness(.8)}
.ic-copy .n{display:block;font-family:"Space Mono",monospace;font-size:.62rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.ic-copy .t{display:block;font-family:Fraunces,serif;font-weight:700;font-size:1.35rem;line-height:1.1;margin:2px 0}
.ic-copy .d{display:block;color:var(--mut);font-size:.92rem;line-height:1.4}

/* what it is */
.what{padding:36px 0 8px}
.grid{border-top:1px solid var(--line)}
.row{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:baseline;padding:16px 2px;border-bottom:1px solid var(--line)}
.row .ic{font-family:"Space Mono",monospace;font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);white-space:nowrap}
.row .tx b{font-family:Fraunces,serif;font-weight:600;font-size:1.2rem}
.row .tx span{display:block;color:var(--mut);font-size:.96rem;line-height:1.5;margin-top:2px}

/* science note */
.sci-note{margin:16px auto;max-width:40rem;padding:14px 16px;border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:10px;background:var(--panel)}
.sci-note.big{margin-top:26px}
.sci-note b{display:block;font-family:"Space Mono",monospace;font-size:.64rem;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin-bottom:5px}
.sci-note span{font-size:.98rem;line-height:1.6;color:var(--ink)}

/* issue / comic strip */
.issue-head,.world-head{max-width:760px;margin:0 auto;padding:34px 20px 8px;text-align:center}
.kick{font-family:"Space Mono",monospace;font-size:.72rem;letter-spacing:.26em;text-transform:uppercase;color:var(--accent);margin:0 0 8px}
.issue-head h1,.world-head h1{font-family:Fraunces,serif;font-weight:900;font-size:clamp(2.4rem,9vw,4rem);line-height:.98;margin:0;letter-spacing:-.01em}
.ll{color:var(--mut);max-width:46ch;margin:14px auto 0;font-size:1.05rem}
.scroll-hint{font-family:"Space Mono",monospace;font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-top:22px}
.strip{max-width:760px;margin:22px auto 0;padding:0 16px}
.panel{position:relative;margin:0 0 22px;border:1px solid var(--line);border-radius:14px;overflow:hidden;aspect-ratio:1200/700;background:var(--panel);box-shadow:0 24px 60px -34px var(--shadow)}
.panel svg{width:100%;height:100%;display:block}
.panel .ov{position:absolute;inset:0;pointer-events:none}
.cap{position:absolute;max-width:58%;background:var(--cap);color:var(--ink);border:1px solid var(--line);border-left:3px solid var(--accent);
  font-family:Newsreader,serif;font-size:clamp(.82rem,2.7vw,1.02rem);line-height:1.4;padding:9px 12px;border-radius:4px;box-shadow:0 8px 24px -12px var(--shadow)}
.cap.tl{top:14px;left:14px}.cap.tr{top:14px;right:14px;text-align:right;border-left:0;border-right:3px solid var(--accent)}
.cap.bl{bottom:14px;left:14px}.cap.br{bottom:14px;right:14px;text-align:right;border-left:0;border-right:3px solid var(--accent)}
.say{position:absolute;max-width:56%;background:var(--ink);color:#0b1622;border-radius:16px;padding:9px 13px;
  font-family:Newsreader,serif;font-size:clamp(.82rem,2.7vw,1.02rem);line-height:1.35;box-shadow:0 10px 24px -12px var(--shadow)}
.say .who{display:block;font-family:"Space Mono",monospace;font-size:.56rem;letter-spacing:.14em;text-transform:uppercase;color:#3a5a72;margin-bottom:2px}
.say.tl{top:14px;left:14px}.say.tr{top:14px;right:14px}.say.bl{bottom:16px;left:14px}.say.br{bottom:16px;right:14px}
.say:after{content:"";position:absolute;width:0;height:0;border:9px solid transparent}
.say.bl:after,.say.br:after{border-top-color:var(--ink);bottom:-15px}
.say.tl:after,.say.tr:after{border-bottom-color:var(--ink);top:-15px}
.say.bl:after,.say.tl:after{left:22px}.say.br:after,.say.tr:after{right:22px}
.sfx{position:absolute;top:44%;left:50%;transform:translate(-50%,-50%) rotate(-8deg);font-family:"Space Mono",monospace;font-weight:700;
  font-size:clamp(2rem,9vw,4rem);color:var(--accent);text-shadow:0 3px 0 var(--bg),0 0 30px var(--accent);letter-spacing:.02em}
.tobe{text-align:center;font-family:"Space Mono",monospace;font-size:.8rem;letter-spacing:.24em;text-transform:uppercase;color:var(--accent);margin:8px 0 4px}

/* world */
.world{padding-bottom:10px}
.ws{max-width:900px;margin:0 auto;padding:26px 20px;display:grid;grid-template-columns:1fr;gap:18px;border-bottom:1px solid var(--line)}
.ws-art{border:1px solid var(--line);border-radius:14px;overflow:hidden;aspect-ratio:1200/700;background:var(--panel)}
.ws-art svg{width:100%;height:100%;display:block}
.ws-copy .epoch{font-family:"Space Mono",monospace;font-size:.66rem;letter-spacing:.2em;text-transform:uppercase;color:var(--accent2);margin:0 0 6px}
.ws-copy h2{font-family:Fraunces,serif;font-weight:900;font-size:clamp(1.6rem,6vw,2.3rem);line-height:1.02;margin:0 0 10px}
.sci-note.echo{border-left-color:var(--accent2)}
.sci-note.echo b{color:var(--accent2)}
.ws-copy p{margin:0 0 .9em}
.gloss{margin:6px 0 0;border-top:1px solid var(--line)}
.gloss dt{font-family:Fraunces,serif;font-weight:600;font-size:1.06rem;color:var(--accent);margin-top:12px}
.gloss dd{margin:2px 0 0;color:var(--mut);font-size:.98rem;line-height:1.5}

/* end nav */
.endnav{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;max-width:760px;margin:30px auto 0;padding:0 20px}
.btn{display:inline-block;background:var(--accent);color:#06121a;font-family:"Space Mono",monospace;font-weight:700;font-size:.86rem;padding:13px 22px;border-radius:999px}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.btn:hover{filter:brightness(1.08)}.btn.ghost:hover{border-color:var(--accent)}

/* picker */
.picker{position:fixed;right:14px;bottom:14px;z-index:56;background:var(--panel);border:1px solid var(--line);border-radius:14px;box-shadow:0 20px 50px -20px var(--shadow);padding:8px;touch-action:none;user-select:none}
.picker[hidden]{display:none}
.picker-grip{display:flex;align-items:center;justify-content:space-between;gap:14px;cursor:grab;padding:4px 6px 8px}
.picker-grip .tag{font-family:"Space Mono",monospace;font-size:.58rem;letter-spacing:.2em;text-transform:uppercase;color:var(--mut)}
.picker-grip .dots{color:var(--mut)}
.picker-body{display:flex;gap:8px}
.sw{width:28px;height:28px;border-radius:8px;border:2px solid var(--line);cursor:pointer;background:radial-gradient(circle at 30% 30%,var(--sw-ac),var(--sw-bg))}
.sw:hover{transform:scale(1.08)}.sw.active{border-color:var(--accent)}

/* footer */
.foot{max-width:760px;margin:36px auto 0;padding:22px 20px 0;border-top:1px solid var(--line);color:var(--mut);font-size:.82rem;font-family:"Space Mono",monospace;line-height:1.7}
.foot p{margin:.3em 0}.foot a{color:var(--accent2)}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

@media (min-width:720px){
  .ws{grid-template-columns:1fr 1fr;gap:26px;align-items:center}
  .ws:nth-child(even) .ws-art{order:2}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}*{animation:none!important;transition:none!important}
  .reveal{opacity:1;transform:none}
}