:root{
  --paper:#f4f1e9; --paper-2:#fbf9f3; --ink:#1b1e24; --muted:#7a7567; --faint:#a8a293;
  --rule:#ddd6c6; --rule-2:#cbc3b0; --teal:#0d6e6b; --rust:#b4531f; --gold:#b08400;
  --bad:#b23b3b; --card:#fffdf7;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%}
body{font-family:'Archivo',system-ui,sans-serif;background:var(--paper);color:var(--ink);font-size:14px;
  background-image:linear-gradient(var(--rule) 1px,transparent 1px);background-size:100% 28px;background-position:0 -1px}
.mono{font-family:'IBM Plex Mono',monospace}
.hidden{display:none!important}

/* ---- auth ---- */
.auth-wrap{min-height:100vh;display:grid;place-items:center;padding:24px}
.auth-card{width:400px;max-width:100%;background:var(--card);border:1.5px solid var(--ink);border-radius:14px;
  padding:30px;box-shadow:0 24px 70px rgba(0,0,0,.15)}
.brand-mark{display:block;flex:0 0 auto}
.auth-card .auth-mark{margin-bottom:16px}
.auth-card h1{font-family:'Spectral',serif;font-size:25px;font-weight:700;line-height:1}
.auth-card .sub{font-family:'IBM Plex Mono';font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);margin:7px 0 22px}
.tabs{display:flex;gap:6px;margin-bottom:20px;background:var(--paper);border-radius:9px;padding:4px}
.tabs button{flex:1;border:none;background:transparent;padding:9px;border-radius:7px;font-weight:600;color:var(--muted);cursor:pointer}
.tabs button.on{background:var(--card);color:var(--ink);box-shadow:0 1px 4px rgba(0,0,0,.08)}
.err{background:#fdeaea;border:1px solid var(--bad);color:#8a2a2a;border-radius:8px;padding:9px 12px;font-size:12.5px;margin-bottom:14px;display:none}
.err.show{display:block}

/* ---- shared form ---- */
.fld{display:flex;flex-direction:column;gap:5px;margin-bottom:14px}
.fld.full{grid-column:1/-1}
.fld label{font-family:'IBM Plex Mono';font-size:10px;letter-spacing:1px;text-transform:uppercase;color:var(--muted)}
.fld label .req{color:var(--rust)}
.fld input,.fld select,.fld textarea{background:var(--paper-2);border:1.5px solid var(--rule-2);border-radius:8px;
  padding:10px 11px;font-family:'Archivo';font-size:14px;color:var(--ink);width:100%}
.fld input.mono,.fld select.mono{font-family:'IBM Plex Mono'}
.fld input:focus,.fld select:focus,.fld textarea:focus{outline:none;border-color:var(--teal)}
.fld textarea{resize:vertical;min-height:52px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}

button{font-family:'Archivo';font-size:13px;font-weight:600;cursor:pointer;transition:.13s;border-radius:9px;
  padding:10px 14px;border:1.5px solid var(--rule-2);background:var(--card);color:var(--ink);
  display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
button:hover{border-color:var(--ink)}
button.primary{background:var(--teal);border-color:var(--teal);color:#fff}
button.primary:hover{filter:brightness(1.08)}
button.block{width:100%;justify-content:center;padding:12px}

/* ---- app shell ---- */
.wrap{max-width:1280px;margin:0 auto;padding:0 22px 80px}
header.mast{padding:24px 0 16px;border-bottom:2px solid var(--ink);display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap}
.mast-l{display:flex;align-items:flex-end;gap:14px}
.mast h1{font-family:'Spectral',serif;font-weight:700;font-size:27px;line-height:.95}
.mast .sub{font-family:'IBM Plex Mono';font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);margin-top:6px}
.mast-r{text-align:right;font-family:'IBM Plex Mono';font-size:11px;color:var(--muted);line-height:1.7}
.mast-r b{color:var(--ink)}
.mast-r button{margin-top:6px;padding:6px 10px;font-size:11px}

.formula{background:var(--ink);color:var(--paper);font-family:'IBM Plex Mono';font-size:11.5px;padding:9px 16px;
  border-radius:0 0 8px 8px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.formula .tag{background:var(--teal);color:#fff;padding:2px 7px;border-radius:4px;font-size:9.5px;letter-spacing:1.5px;font-weight:600}
.formula em{color:var(--gold);font-style:normal}

.toolbar{display:flex;gap:10px;align-items:center;margin:18px 0 14px;flex-wrap:wrap}
.search{flex:1;min-width:200px;position:relative}
.search input{width:100%;background:var(--card);border:1.5px solid var(--rule-2);border-radius:9px;padding:11px 12px 11px 36px;font-size:14px}
.search input:focus{outline:none;border-color:var(--teal)}
.search::before{content:"⌕";position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:16px}
select.filter{background:var(--card);border:1.5px solid var(--rule-2);border-radius:9px;padding:10px 12px;font-size:13px;cursor:pointer}
select.filter:focus{outline:none;border-color:var(--teal)}

.stats{display:flex;border:1.5px solid var(--rule-2);border-radius:10px;overflow:hidden;margin-bottom:14px;background:var(--card)}
.stat{flex:1;padding:12px 16px;border-right:1px solid var(--rule);min-width:110px}
.stat:last-child{border-right:none}
.stat .k{font-family:'IBM Plex Mono';font-size:9.5px;letter-spacing:1.5px;text-transform:uppercase;color:var(--muted)}
.stat .v{font-family:'Spectral',serif;font-weight:600;font-size:22px;margin-top:3px}
.stat .v small{font-family:'IBM Plex Mono';font-size:11px;color:var(--muted);font-weight:400}

.tablecard{border:1.5px solid var(--ink);border-radius:11px;overflow:hidden;background:var(--card)}
.scroll{overflow-x:auto}
table{border-collapse:collapse;width:100%;min-width:1000px}
thead th{background:var(--ink);color:var(--paper);font-family:'IBM Plex Mono';font-weight:500;font-size:10px;
  letter-spacing:.8px;text-transform:uppercase;padding:11px 12px;text-align:left;white-space:nowrap;cursor:pointer;user-select:none}
thead th.num{text-align:right}
thead th .ar{opacity:.4;margin-left:4px}
thead th.sorted .ar{opacity:1;color:var(--gold)}
tbody td{padding:11px 12px;border-bottom:1px solid var(--rule);font-size:13px;vertical-align:middle}
tbody tr:last-child td{border-bottom:none}
tbody tr:hover{background:var(--paper-2)}
.code{font-family:'IBM Plex Mono';font-weight:600;font-size:12.5px;color:var(--teal);white-space:nowrap}
.desc{font-weight:500;max-width:260px}
.desc small{display:block;color:var(--muted);font-weight:400;font-size:11px;margin-top:2px}
.mk{font-size:12.5px}.mk small{display:block;color:var(--muted);font-size:11px;font-family:'IBM Plex Mono'}
td.num{font-family:'IBM Plex Mono';text-align:right;white-space:nowrap}
.pct{font-family:'IBM Plex Mono';font-size:12px;text-align:right}
.unit{font-family:'IBM Plex Mono';font-size:11px;color:var(--muted);text-align:center;white-space:nowrap}
.pct.disc{color:var(--rust)}
.allin{font-family:'IBM Plex Mono';font-weight:600;text-align:right;white-space:nowrap}
.cat-pill{font-family:'IBM Plex Mono';font-size:9px;letter-spacing:.5px;text-transform:uppercase;padding:2px 7px;border-radius:20px;border:1px solid var(--rule-2);color:var(--muted);white-space:nowrap}
.disc-tag{font-family:'IBM Plex Mono';font-size:9px;letter-spacing:.5px;text-transform:uppercase;padding:2px 7px;border-radius:5px;border:1px solid;white-space:nowrap;display:inline-block}
.subtxt{font-family:'IBM Plex Mono';font-size:10px;color:var(--muted);margin-top:4px}
.rowact{display:flex;gap:4px;justify-content:flex-end}
.rowact button{padding:5px 8px;font-size:12px;border-color:transparent;background:transparent}
.rowact button:hover{background:var(--paper);border-color:var(--rule-2)}
.rowact .dl:hover{color:var(--bad)}
.empty-tbl{padding:50px 20px;text-align:center;color:var(--muted)}
.empty-tbl h3{font-family:'Spectral',serif;font-size:18px;color:var(--ink);margin-bottom:6px}
.note{font-family:'IBM Plex Mono';font-size:10.5px;color:var(--faint);margin-top:14px;line-height:1.7}

/* modal */
.modal-bg{position:fixed;inset:0;background:rgba(27,30,36,.5);display:none;place-items:center;z-index:100;backdrop-filter:blur(3px);padding:20px}
.modal-bg.show{display:grid}
.modal{width:560px;max-width:100%;max-height:90vh;overflow-y:auto;background:var(--paper-2);border:1.5px solid var(--ink);border-radius:14px}
.modal-h{padding:18px 22px;border-bottom:1.5px solid var(--rule-2);display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;background:var(--paper-2)}
.modal-h h2{font-family:'Spectral',serif;font-size:21px;font-weight:600}
.modal-h .x{background:transparent;border:none;font-size:20px;color:var(--muted)}
.modal-b{padding:20px 22px}
.preview{background:var(--ink);color:var(--paper);border-radius:10px;padding:14px 16px;margin-top:6px;font-family:'IBM Plex Mono';font-size:12px}
.preview .pr{display:flex;justify-content:space-between;padding:3px 0}
.preview .pr.tot{border-top:1px solid #3b414c;margin-top:7px;padding-top:9px;font-size:15px;color:#fff}
.preview .pr.tot b{color:var(--gold)}
.modal-f{padding:16px 22px;border-top:1.5px solid var(--rule-2);display:flex;gap:10px;justify-content:flex-end;position:sticky;bottom:0;background:var(--paper-2)}
.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--ink);color:var(--paper);
  padding:12px 20px;border-radius:10px;font-size:13px;z-index:200;opacity:0;transition:.25s;font-weight:500;box-shadow:0 12px 40px rgba(0,0,0,.3)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
@media(max-width:640px){.mast h1{font-size:22px}.grid2,.grid3{grid-template-columns:1fr}}