/* Palette */

:root{
  --bg:#060606;
  --bg-grad-a:#0a0a0f;
  --bg-grad-b:#000000;
  --panel:rgba(10,10,12,.78);
  --ink:#f0efe8;
  --muted:#bdbbb3;
  --title:#fff2cc;
  --title-glow: rgba(255,220,140,.35);
  --section:#ffd86b;
  --underline:linear-gradient(90deg,#ffd86b,transparent);
  --ring:#e7c562;
  --ring-glow:rgba(231,197,98,.52);
  --ring-fill:radial-gradient(circle at 30% 30%, rgba(231,197,98,.18), transparent 70%);
  --grad:linear-gradient(90deg,#fff3c6,#ffe38f,#ffd86b);
  --tab-ink:#fff3d1;
  --coin-glow:rgba(255,230,160,.82);
  --coin-core:rgba(255,214,120,.28);
  --border:rgba(231,197,98,.2);
  --shadow:rgba(0,0,0,.65);
  --grid:rgba(255,255,255,.035);
  --spark:rgba(255,224,150,.85);
  --header-grad:linear-gradient(180deg, rgba(0,0,0,.9), rgba(0,0,0,.55), transparent);
  --footer-grad:linear-gradient(0deg, rgba(0,0,0,.75), transparent);
  --gold:#d4af37;
}


/* Base */
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0; font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial; line-height:1.7; color:var(--ink); background:var(--bg);}
h1,h2,h3{font-family:'Playfair Display',serif}
#bgFX{position:fixed; inset:0; z-index:0; display:block}

/* Intro overlay */
#intro{position:fixed; inset:0; z-index:9; display:grid; place-items:center; background:#000; animation: introFade 1.2s ease forwards; animation-delay: 1.6s; pointer-events:none;}
#intro .intro-bg{position:absolute; inset:0; opacity:0; animation: introBg 1.2s ease forwards;}
#intro .intro-coin{position:relative; width:96px; height:96px; border-radius:50%; display:grid; place-items:center; opacity:0; animation: introCoin .9s ease .6s forwards;}
#intro .intro-coin img{width:90%; height:90%; object-fit:contain; filter: drop-shadow(0 0 16px var(--coin-glow))}
#intro .intro-line{position:absolute; bottom:22%; text-align:center; font: 800 12px Inter, sans-serif; letter-spacing: .38em; color: var(--gold); text-shadow:0 0 10px rgba(212,175,55,.45); opacity:0; animation: introLine 1.4s ease .9s forwards;}

@keyframes introBg{from{opacity:0} to{opacity:1}}
@keyframes introCoin{from{transform: scale(.9) rotateX(15deg) rotateY(-10deg); opacity:0} to{transform: scale(1) rotateX(0) rotateY(0); opacity:1}}
@keyframes introLine{0%{opacity:0} 30%{opacity:1} 80%{opacity:1} 100%{opacity:0}}
@keyframes introFade{to{opacity:0; visibility:hidden}}

/* Header / Tabs */
.codex-header{position:sticky; top:0; z-index:5; padding:18px clamp(12px,3vw,36px); backdrop-filter: blur(10px); background: var(--header-grad); border-bottom:1px solid var(--border); box-shadow: 0 10px 60px var(--shadow);}
.tabs-rail{display:flex; align-items:center; justify-content:center; gap: clamp(12px,3vw,44px);}

.tab{position:relative; border:0; cursor:pointer; background:transparent; color:var(--tab-ink); text-transform:uppercase; letter-spacing:.9px; font-weight:800; padding:14px 20px; isolation:isolate; transform: translateZ(0);}
.tab .ring{position:absolute; inset:-6px; border-radius:999px; border:2px solid var(--ring); box-shadow: 0 0 30px var(--ring-glow) inset, 0 0 40px var(--ring-glow); transition: transform .5s ease, box-shadow .5s ease, background .5s ease; pointer-events:none;}
.tab.half.left .ring{clip-path: inset(0 50% 0 0 round 999px)}
.tab.half.right .ring{clip-path: inset(0 0 0 50% round 999px)}
.tab:hover .ring{transform: translateZ(0) scale(1.02)}
.tab.active .ring{background: var(--ring-fill);}
.tab .tab-label{position:relative; font-size: clamp(12px,1.6vw,14px);}
.tab.active .tab-label{background: var(--grad); -webkit-background-clip: text; background-clip:text; color: transparent;}

/* Crest coin (brighter glow & slower rotation) */
.crest-coin{width:78px; height:78px; position:relative; display:grid; place-items:center; filter: drop-shadow(0 0 22px var(--coin-glow)); transform-style: preserve-3d;}
.crest-coin::before, .crest-coin::after{content:""; position:absolute; inset:-10px; border-radius:50%; border:1px solid var(--ring); opacity:.85; box-shadow: 0 0 26px var(--ring-glow);}
.coin-3d{width:70px; height:70px; border-radius:50%; background: radial-gradient(circle at 30% 30%, var(--coin-core), transparent 70%); display:grid; place-items:center; overflow:hidden; animation: omni 16s linear infinite;}
.coin-3d img{width:86%; height:86%; object-fit:contain; filter: drop-shadow(0 0 16px var(--coin-glow))}

/* Main */
.codex-main{position:relative; z-index:1; padding: clamp(16px,3.5vw,48px)}
.doc{display:none; background: var(--panel); border:1px solid var(--border); border-radius:24px; padding: clamp(16px,2.8vw,36px); box-shadow: 0 30px 90px var(--shadow); animation: fadeIn .6s ease forwards;}
.doc.active{display:block}

.doc-title{font: 700 clamp(20px,3.2vw,34px) 'Playfair Display',serif; color:var(--title); letter-spacing:.3px; margin:.2rem 0 .4rem; text-shadow:0 0 8px var(--title-glow);}
.last-updated{color:var(--muted); margin-top:0}
.section-head{margin: 1.4rem 0 .4rem; font: 600 clamp(16px,2.2vw,22px) 'Playfair Display',serif; color: var(--section); position:relative}
.section-head::after{content:''; position:absolute; left:0; bottom:-6px; width:86px; height:2px; background: var(--underline);}
p{margin:.5rem 0; color: var(--ink)}
p.spacer{opacity:0}

.codex-footer{text-align:center; color:var(--muted); padding:30px 20px; border-top:1px solid var(--border); background:var(--footer-grad)}

.progress{height:2px; background:transparent; width:100%; margin-top:10px}
.progress span{display:block; height:100%; width:0; background: var(--grad); box-shadow: 0 0 10px var(--ring-glow);}

@keyframes fadeIn{from{opacity:0; transform: translateY(6px)} to{opacity:1; transform: translateY(0)}}
@keyframes omni{0%{transform: rotateX(0deg) rotateY(0deg)} 50%{transform: rotateX(180deg) rotateY(90deg)} 100%{transform: rotateX(360deg) rotateY(180deg)}}