:root{--bg:#ece5d7;--paper:#f8f2e7;--ink:#24211d;--muted:#746d62;--line:#c8bead;--accent:#865044;--dark:#23221f;--ok:#3f6b55;--warn:#8a6a2d;--bad:#8a4339;--shadow:0 12px 35px rgba(49,41,31,.12)}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:linear-gradient(180deg,#e6ddcc,#f2eadc 55%,#e5dac7);min-height:100vh}.admin-body:before{content:"";position:fixed;inset:0;pointer-events:none;opacity:.08;background:repeating-linear-gradient(0deg,rgba(56,46,32,.12) 0 1px,transparent 1px 4px)}button,input,select{font:inherit}.admin-topbar{position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;align-items:center;gap:20px;padding:18px max(18px,calc((100vw - 1180px)/2));background:rgba(239,232,216,.95);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.admin-topbar strong{font-size:20px}.top-actions{display:flex;align-items:center;gap:12px}.admin-shell{width:min(1180px,100%);margin:auto;padding:24px 18px 70px}.card{background:rgba(248,242,231,.91);border:1px solid rgba(79,68,54,.28);box-shadow:var(--shadow);border-radius:10px}.eyebrow{font-size:10px;letter-spacing:.16em;font-weight:900;color:var(--accent);margin-bottom:6px}.muted{color:var(--muted);font-size:13px;line-height:1.6}.toolbar{padding:18px;display:flex;align-items:end;justify-content:space-between;gap:18px}.toolbar label,.stack label,.generate-panel label{display:grid;gap:7px;font-size:13px;font-weight:750;color:var(--muted)}input,select{border:1px solid #b8ad9d;background:#fffaf0;color:var(--ink);padding:12px 13px;border-radius:7px;outline:none}input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(134,80,68,.12)}button{border:0;border-radius:7px;padding:11px 15px;cursor:pointer;font-weight:800}.primary{background:var(--dark);color:#fff8ec;box-shadow:4px 4px 0 rgba(134,80,68,.55)}.secondary{background:var(--paper);color:var(--ink);border:1px solid var(--ink)}.ghost{background:transparent;border:1px solid var(--line);color:var(--ink)}button:hover{transform:translateY(-1px)}button:disabled{opacity:.45;cursor:not-allowed;transform:none}.toolbar-actions{display:flex;gap:9px;flex-wrap:wrap}.claim-panel,.generate-panel{margin-top:14px;padding:18px;display:flex;align-items:center;justify-content:space-between;gap:18px}.claimed-code{font:900 clamp(24px,4vw,38px)/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.04em;margin:4px 0 8px}.generate-panel{justify-content:flex-start}.generate-panel input{width:110px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}.stat{padding:18px}.stat span{display:block;font-size:12px;color:var(--muted);font-weight:800}.stat strong{display:block;font-size:34px;margin-top:7px}.tabs{display:flex;gap:8px;margin:28px 0 12px}.tab{background:transparent;border-bottom:2px solid transparent;border-radius:0;color:var(--muted);padding:10px 4px;margin-right:16px}.tab.active{color:var(--ink);border-bottom-color:var(--accent)}.tab-panel{display:none}.tab-panel.active{display:block}.filters{display:flex;gap:10px;padding:12px;margin-bottom:12px}.filters input{flex:1;min-width:140px}.table-wrap{overflow:auto}.table-wrap table{width:100%;border-collapse:collapse;min-width:760px}th,td{text-align:left;padding:13px 14px;border-bottom:1px solid rgba(96,83,67,.15);font-size:13px;vertical-align:middle}th{font-size:11px;color:var(--muted);letter-spacing:.06em;background:rgba(228,218,200,.55);position:sticky;top:0}tbody tr:hover{background:rgba(255,255,255,.32)}.code-cell{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:800}.status{display:inline-flex;padding:5px 8px;border-radius:999px;font-size:10px;font-weight:900;letter-spacing:.05em;border:1px solid currentColor}.status.AVAILABLE{color:var(--ok)}.status.ISSUED{color:var(--warn)}.status.USED{color:#555}.status.REVOKED{color:var(--bad)}.row-actions{display:flex;gap:6px}.row-actions button{padding:7px 9px;font-size:11px}.users-grid{display:grid;grid-template-columns:330px 1fr;gap:14px}.stack{display:grid;gap:14px}.stack h2{margin:0}.users-grid form{padding:18px}.toast{position:fixed;right:22px;bottom:22px;background:var(--dark);color:#fff;padding:13px 16px;border-radius:8px;box-shadow:var(--shadow);max-width:min(420px,calc(100vw - 44px));z-index:40}.hidden{display:none!important}.error{color:var(--bad);font-weight:750;font-size:13px;min-height:20px}.login-body{display:grid;place-items:center}.login-shell{width:min(460px,100%);padding:26px}.login-card{padding:32px}.login-card h1{font-size:38px;margin:0 0 8px}.login-card .stack{margin-top:24px}.security-note{margin-top:22px;padding-top:16px;border-top:1px dashed var(--line);font-size:11px;color:var(--muted)}
@media(max-width:760px){.admin-topbar{padding:14px 12px}.admin-shell{padding:14px 10px 50px}.toolbar,.claim-panel,.generate-panel{align-items:stretch;flex-direction:column}.toolbar-actions{width:100%}.toolbar-actions button,.claim-panel button{flex:1}.stats{grid-template-columns:1fr 1fr}.filters{flex-direction:column}.users-grid{grid-template-columns:1fr}.top-actions span{display:none}}