/* Không Gian Khối — giao diện dùng chung cho trang 3D và trang quản trị */
:root{
  --ink:#0f1418; --panel:#171e24; --raise:#1d262d; --line:#2a353e; --text:#e8eef2; --muted:#8fa0ac;
  --accent:#5fd0b4; --accent-ink:#06261f; --warn:#f0a35e; --danger:#e86a6a; --ok:#7fd88f;
  --display:"Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --body:"Be Vietnam Pro", "Segoe UI", system-ui, sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{background:var(--ink);color:var(--text);font-family:var(--body);font-size:14px}
[hidden]{display:none!important}
h1,h2,h3{font-family:var(--display);font-weight:700;margin:0;text-wrap:balance;letter-spacing:-.01em}
h1{font-size:2rem;line-height:1.1}
h2{font-size:1.5rem}
h3{font-size:1.1rem}
.eyebrow{font-size:.72rem;text-transform:uppercase;letter-spacing:.12em;color:var(--accent);font-weight:600;margin-bottom:8px}
p.lead{color:var(--muted);margin:8px 0 18px;line-height:1.55}
label{display:block;font-size:.8rem;color:var(--muted);margin:14px 0 6px;font-weight:500}
input[type=text],input[type=password],input[type=search],input[type=email],input[type=number],select,textarea{width:100%;background:var(--ink);border:1px solid var(--line);border-radius:8px;color:var(--text);padding:10px 12px;font:inherit;font-size:15px}
textarea{resize:vertical;min-height:70px}
input:focus-visible,button:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.hint{font-size:.75rem;color:var(--muted);margin-top:4px}
.row{display:flex;gap:8px;flex-wrap:wrap}
.swatch{width:34px;height:34px;border-radius:8px;border:2px solid transparent;cursor:pointer;padding:0}
.swatch[aria-pressed=true]{border-color:var(--text)}
.shape{flex:1;min-width:72px;background:var(--ink);border:1px solid var(--line);color:var(--text);border-radius:8px;padding:10px 6px;font:inherit;font-size:13px;cursor:pointer}
.shape[aria-pressed=true]{border-color:var(--accent);color:var(--accent)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--accent);color:var(--accent-ink);border:0;border-radius:8px;padding:10px 16px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:disabled{opacity:.55;cursor:default}
.btn.full{width:100%;margin-top:22px}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn.ghost:hover{border-color:var(--muted)}
.btn.danger{background:var(--danger);color:#2a0b0b}
.btn.sm{padding:6px 11px;font-size:.82rem}
.err{color:var(--warn);font-size:.85rem;margin-top:10px;min-height:1.2em}
.err.ok{color:var(--ok)}
.dot{width:14px;height:14px;border-radius:4px;flex:none}

/* Thẻ tab */
.tabs{display:flex;gap:4px;background:var(--ink);border:1px solid var(--line);border-radius:10px;padding:4px;margin:4px 0 6px}
.tabs button{flex:1;background:transparent;border:0;color:var(--muted);font:inherit;font-weight:600;padding:8px;border-radius:7px;cursor:pointer}
.tabs button[aria-selected=true]{background:var(--raise);color:var(--text)}

/* Nhãn trạng thái */
.pill{display:inline-flex;align-items:center;gap:6px;font-size:.75rem;font-weight:600;padding:3px 9px;border-radius:999px;border:1px solid var(--line);white-space:nowrap}
.pill::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.pill.admin{color:var(--warn)}
.pill.member{color:var(--muted)}
.pill.active{color:var(--ok)}
.pill.locked{color:var(--danger)}
.pill.all{color:var(--accent)}
.pill.restricted{color:var(--warn)}

/* Hộp thoại */
dialog{background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:14px;padding:0;width:min(520px,calc(100vw - 32px));max-height:calc(100dvh - 32px)}
dialog::backdrop{background:rgba(5,8,10,.7)}
dialog form{padding:24px;display:flex;flex-direction:column}
.dlg-actions{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;margin-top:22px}
.dlg-actions .right{display:flex;gap:8px;margin-left:auto}
.confirm{background:rgba(232,106,106,.1);border:1px solid rgba(232,106,106,.4);border-radius:10px;padding:12px;margin-top:16px;font-size:.88rem;line-height:1.5}
.checks{display:flex;flex-direction:column;gap:6px;background:var(--ink);border:1px solid var(--line);border-radius:8px;padding:10px 12px}
.checks label{display:flex;align-items:center;gap:8px;margin:0;color:var(--text);font-size:.9rem;font-weight:400}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}
@media (max-width:480px){.grid2{grid-template-columns:1fr}}