/* Code Gaia Archive v3 structural layer. Additive only; existing site/player styles untouched. */
.arc-v3-toolbar{border-bottom:1px solid var(--ln,rgba(255,255,255,.08));background:var(--bg-2,#111823);position:sticky;top:0;z-index:20}
.arc-v3-toolbar .wrap{padding-top:.85rem;padding-bottom:.85rem}
.arc-v3-row{display:flex;gap:.45rem;align-items:center;flex-wrap:wrap;margin:.38rem 0}
.arc-v3-label{font:500 .58rem/1 var(--sans,Inter,sans-serif);letter-spacing:.13em;text-transform:uppercase;color:var(--tx-4,#687282);min-width:74px}
.arc-v3-btn{border:1px solid var(--ln,rgba(255,255,255,.09));background:transparent;color:var(--tx-3,#8a94a3);padding:.43rem .7rem;font:500 .63rem/1 var(--sans,Inter,sans-serif);letter-spacing:.055em;cursor:pointer;transition:.18s}
.arc-v3-btn:hover,.arc-v3-btn.is-active{border-color:var(--ac-warm,#c3a77e);color:var(--tx-1,#e7e9ec);background:rgba(195,167,126,.07)}
.arc-v3-btn--book.is-active{color:var(--ac-warm,#c3a77e)}
.arc-v3-tag{border-radius:999px}.arc-v3-clear{margin-left:auto}
.arc-v3-level-note{font:400 .68rem/1.4 var(--sans,Inter,sans-serif);color:var(--tx-4,#687282);padding:.35rem 0 .05rem}
.arc-v3-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--ln,rgba(255,255,255,.08));border:1px solid var(--ln,rgba(255,255,255,.08))}
.arc-v3-card{position:relative;background:var(--bg,#0d1117);padding:1.35rem 1.35rem 1.2rem;min-height:205px;display:flex;flex-direction:column;text-decoration:none;color:inherit;transition:.18s;overflow:hidden}
.arc-v3-card[data-state="open"]:hover{background:var(--bg-2,#111823)}
.arc-v3-card[data-state="locked"]{opacity:.73}.arc-v3-card[data-state="future"]{opacity:.57}
.arc-v3-card[data-hidden-unlocked="1"]{outline:1px solid rgba(195,167,126,.38);outline-offset:-1px;background:linear-gradient(145deg,rgba(195,167,126,.055),transparent 55%),var(--bg,#0d1117)}
.arc-v3-meta{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap;margin-bottom:.85rem}
.arc-v3-id{font:500 .59rem/1 var(--sans,Inter,sans-serif);letter-spacing:.09em;color:var(--ac-warm,#c3a77e)}
.arc-v3-badge{font:500 .54rem/1 var(--sans,Inter,sans-serif);letter-spacing:.08em;text-transform:uppercase;border:1px solid var(--ln,rgba(255,255,255,.08));padding:.28rem .42rem;color:var(--tx-4,#687282)}
.arc-v3-badge--hidden{border-color:rgba(195,167,126,.35);color:var(--ac-warm,#c3a77e)}
.arc-v3-title{font:500 1.2rem/1.18 var(--serif,'EB Garamond',serif);margin:0 0 .65rem;color:var(--tx-1,#e7e9ec)}
.arc-v3-note{font:400 .78rem/1.55 var(--sans,Inter,sans-serif);color:var(--tx-3,#8a94a3);margin:0 0 1rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.arc-v3-tags{display:flex;gap:.32rem;flex-wrap:wrap;margin-top:auto}.arc-v3-mini{font:400 .55rem/1 var(--sans,Inter,sans-serif);color:var(--tx-4,#687282);border:1px solid var(--ln,rgba(255,255,255,.07));padding:.25rem .36rem;border-radius:999px}
.arc-v3-action{font:500 .61rem/1 var(--sans,Inter,sans-serif);letter-spacing:.06em;text-transform:uppercase;margin-top:.9rem;color:var(--ac-warm,#c3a77e)}
.arc-v3-lock{position:absolute;right:1rem;top:1rem;font-size:.7rem;color:var(--tx-4,#687282)}
.arc-v3-empty{grid-column:1/-1;padding:4rem 1.5rem;text-align:center;color:var(--tx-4,#687282);font-family:var(--serif,'EB Garamond',serif);font-style:italic;background:var(--bg,#0d1117)}
.arc-v3-folder-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:var(--ln,rgba(255,255,255,.08));border:1px solid var(--ln,rgba(255,255,255,.08));margin-top:1.8rem}
.arc-v3-folder{display:block;background:var(--bg,#0d1117);padding:1.45rem;text-decoration:none;color:inherit}.arc-v3-folder:hover{background:var(--bg-2,#111823)}
.arc-v3-folder h3{font:500 1.35rem/1.15 var(--serif,'EB Garamond',serif);margin:.2rem 0 .45rem}.arc-v3-folder p{font:400 .75rem/1.5 var(--sans,Inter,sans-serif);color:var(--tx-3,#8a94a3);margin:0}.arc-v3-count{font:500 .58rem/1 var(--sans,Inter,sans-serif);letter-spacing:.09em;text-transform:uppercase;color:var(--ac-warm,#c3a77e)}
.arc-v3-search{width:min(560px,100%);margin-top:1.35rem;position:relative}.arc-v3-search input{width:100%;box-sizing:border-box;background:var(--bg-2,#111823);border:1px solid var(--ln,rgba(255,255,255,.08));color:var(--tx-1,#e7e9ec);padding:.85rem 1rem;font:400 .8rem/1.2 var(--sans,Inter,sans-serif);outline:none}.arc-v3-search input:focus{border-color:rgba(195,167,126,.45)}
.arc-v3-theoretical{border-left:2px solid #8f79aa}.arc-v3-theory-note{font:500 .54rem/1.3 var(--sans,Inter,sans-serif);letter-spacing:.08em;text-transform:uppercase;color:#a994c4;margin-bottom:.55rem}
@media(max-width:900px){.arc-v3-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.arc-v3-folder-grid{grid-template-columns:1fr}.arc-v3-toolbar{position:relative}}
@media(max-width:600px){.arc-v3-grid{grid-template-columns:1fr}.arc-v3-clear{margin-left:0}.arc-v3-label{min-width:62px}}