/* 3관 안내판 카드 — index.html 과 admin.html(미리보기)이 함께 사용 */
.halls{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.hall{position:relative;display:flex;flex-direction:column;border-radius:var(--radius);padding:30px 28px 26px;color:#fff;overflow:hidden;min-height:340px;transition:transform .35s cubic-bezier(.2,.8,.2,1),box-shadow .35s}
.hall:hover{transform:translateY(-10px);box-shadow:0 30px 60px -20px rgba(6,43,87,.6)}
.hall::after{content:"";position:absolute;right:-60px;top:-60px;width:200px;height:200px;border-radius:50%;background:rgba(255,255,255,.08);transition:transform .5s}
.hall:hover::after{transform:scale(1.5)}
.hall.main{background:linear-gradient(150deg,#1D8FE0,#006FBC 60%,#0059A0)}
.hall.flow{background:linear-gradient(150deg,#0A4E93,#062B57 70%);}
.hall.high{background:linear-gradient(150deg,#0E2748,#041C3B 70%)}
.hall-no{font-size:13px;font-weight:700;letter-spacing:.14em;opacity:.7}
.hall-sym{position:absolute;right:22px;top:18px;font-family:"Times New Roman",serif;font-style:italic;font-size:64px;line-height:1;opacity:.22}
.hall h3{font-size:34px;font-weight:900;letter-spacing:-.02em;margin:8px 0 4px;display:flex;align-items:center;gap:10px}
.hall .target{display:inline-block;font-size:13px;font-weight:700;padding:5px 12px;border-radius:999px;background:rgba(255,255,255,.16);margin-bottom:16px;align-self:flex-start}
.hall.main .target{background:var(--blue-deep);color:#fff;box-shadow:0 4px 12px -4px rgba(4,28,59,.5)}
.hall.flow .target{background:var(--coral)}
.hall.high .target{background:var(--warm);color:var(--blue-night)}
.hall ul{list-style:none;font-size:15px;color:rgba(255,255,255,.88);display:grid;gap:7px;margin-bottom:24px}
.hall li{display:flex;gap:8px}
.hall li::before{content:"✓";color:var(--blue-sky);font-weight:800}
.hall.high li::before{color:var(--warm)}
.hall.flow li::before{color:#FFB39E}
.hall .go{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:18px;border-top:1px solid rgba(255,255,255,.2);font-weight:700}
.hall .arrow{width:46px;height:46px;border-radius:50%;background:#fff;color:var(--blue-deep);display:grid;place-items:center;font-size:20px;transition:transform .3s}
.hall:hover .arrow{transform:translateX(6px) rotate(-45deg)}
@media (max-width:1024px){.halls{grid-template-columns:1fr}.hall{min-height:auto}}
.hall [hidden]{display:none}