:root{
  --bg:#f7f5f2; --card:#fff; --ink:#1d1b19; --muted:#6f6a64; --line:#e6e1da;
  --accent:#2f4a3a; --accent-ink:#fff; --warn:#9a5b00; --warn-bg:#fff5e5;
  --err:#a1261b; --err-bg:#fdecea; --ok:#1f6b3a; --ok-bg:#e8f5ec; --sim:#5b3d99; --sim-bg:#f0eafb;
  --radius:14px; --shadow:0 1px 2px rgba(0,0,0,.04),0 4px 16px rgba(0,0,0,.04);
  font-family: ui-sans-serif, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-size:15px;line-height:1.45}
a{color:var(--accent)}
h1{font-size:1.45rem;font-weight:600;letter-spacing:-.01em;margin:.2rem 0 1rem}
h2{font-size:1.1rem;font-weight:600;margin:0 0 .6rem}
h3{font-size:1rem;font-weight:600;margin:.8rem 0 .4rem}
.muted{color:var(--muted)} .small{font-size:.85rem} .center{text-align:center} .pad{padding:2rem}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace} .big{font-size:1.2rem;letter-spacing:.06em}

/* Layout */
.shell{display:grid;grid-template-columns:230px 1fr;min-height:100vh}
nav.side{background:#fff;border-right:1px solid var(--line);padding:1.2rem .8rem;position:sticky;top:0;height:100vh}
nav.side .brand{font-weight:700;padding:.3rem .6rem 1rem;letter-spacing:.02em}
nav.side a{display:block;padding:.55rem .7rem;border-radius:10px;color:var(--ink);text-decoration:none;margin-bottom:2px}
nav.side a.active,nav.side a:hover{background:var(--bg)}
main.content{padding:1.5rem clamp(1rem,3vw,2.5rem);max-width:1100px;width:100%}
@media (max-width:820px){
  .shell{grid-template-columns:1fr}
  nav.side{position:fixed;bottom:0;top:auto;left:0;right:0;height:auto;display:flex;overflow-x:auto;gap:2px;padding:.4rem;border-right:0;border-top:1px solid var(--line);z-index:10}
  nav.side .brand{display:none}
  nav.side a{white-space:nowrap;font-size:.85rem;padding:.5rem .6rem}
  main.content{padding-bottom:5rem}
}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1rem 1.1rem;box-shadow:var(--shadow);margin-bottom:1rem}
.grid{display:grid;gap:1rem}
.g2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.row{display:flex;gap:.6rem;align-items:center;flex-wrap:wrap}
.spread{justify-content:space-between}
.stack{display:flex;flex-direction:column;gap:.75rem}

/* Forms */
label{display:flex;flex-direction:column;gap:.3rem;font-size:.9rem;color:var(--muted)}
input,select,textarea{font:inherit;color:var(--ink);background:#fff;border:1px solid var(--line);border-radius:10px;padding:.6rem .7rem;min-width:0}
textarea{min-height:5rem;resize:vertical}
input:focus,select:focus,textarea:focus{outline:2px solid #c9d6cd;border-color:var(--accent)}
label.check{flex-direction:row;align-items:center;gap:.5rem;color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:.4rem;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:10px;padding:.55rem .9rem;font:inherit;cursor:pointer;text-decoration:none}
.btn:hover{border-color:#cfc7bc}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.danger{color:var(--err);border-color:#f0c9c5}
.btn.small{padding:.35rem .6rem;font-size:.85rem}
.btn[disabled]{opacity:.5;cursor:not-allowed}

/* Badges / alerts */
.badge{display:inline-block;font-size:.75rem;padding:.12rem .5rem;border-radius:999px;background:var(--bg);border:1px solid var(--line);white-space:nowrap}
.b-ok{background:var(--ok-bg);color:var(--ok);border-color:#cfe8d7}
.b-warn{background:var(--warn-bg);color:var(--warn);border-color:#f3dcb4}
.b-err{background:var(--err-bg);color:var(--err);border-color:#f3c9c4}
.b-sim{background:var(--sim-bg);color:var(--sim);border-color:#ddd0f5;font-weight:600}
.alert{border-radius:10px;padding:.6rem .8rem;margin:.5rem 0;font-size:.92rem}
.alert.warn{background:var(--warn-bg);color:var(--warn)}
.alert.err{background:var(--err-bg);color:var(--err)}
.alert.ok{background:var(--ok-bg);color:var(--ok)}
.alert.info{background:#eef2f6;color:#2c3e50}
.ok{color:var(--ok)} .err{color:var(--err)}

/* Dropzone */
.drop{border:2px dashed #cfc7bc;border-radius:var(--radius);padding:1.6rem;text-align:center;background:#fffdfa;cursor:pointer;transition:.15s}
.drop.over{border-color:var(--accent);background:#f2f7f3}
.thumbs{display:flex;gap:.5rem;flex-wrap:wrap;margin-top:.7rem}
.thumbs figure{margin:0;position:relative}
.thumbs img{width:84px;height:84px;object-fit:cover;border-radius:10px;border:1px solid var(--line)}
.thumbs button{position:absolute;top:-6px;right:-6px;border-radius:50%;width:22px;height:22px;border:1px solid var(--line);background:#fff;cursor:pointer;line-height:1}

/* Product */
.product{display:grid;grid-template-columns:140px 1fr;gap:1rem}
.product img.ref{width:140px;max-height:300px;object-fit:contain;border-radius:10px;border:1px solid var(--line);background:#fafafa}
@media (max-width:560px){.product{grid-template-columns:1fr}.product img.ref{width:100%;max-height:260px}}
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{text-align:left;padding:.45rem .5rem;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--muted);font-weight:500;font-size:.8rem;text-transform:uppercase;letter-spacing:.03em}
.table-wrap{overflow-x:auto}
tr.click{cursor:pointer} tr.click:hover{background:#faf8f5}
.cand{border:1px solid var(--line);border-radius:12px;padding:.8rem;margin-top:.7rem;background:#fcfbf9}
.cand img{width:70px;height:70px;object-fit:cover;border-radius:8px;border:1px solid var(--line)}
.kv{display:grid;grid-template-columns:auto 1fr;gap:.2rem .8rem;font-size:.9rem}
.kv dt{color:var(--muted)} .kv dd{margin:0}
.summary{border:2px solid var(--accent);border-radius:var(--radius);padding:1rem;background:#fbfdfb}
.totals td{border:0;padding:.2rem .4rem} .totals tr.total td{font-weight:700;border-top:1px solid var(--line);padding-top:.5rem}
.modal-bg{position:fixed;inset:0;background:rgba(20,18,16,.45);display:flex;align-items:center;justify-content:center;z-index:50;padding:1rem}
.modal{background:#fff;border-radius:var(--radius);padding:1.2rem;max-width:420px;width:100%}
.auth-card{max-width:420px;margin:8vh auto;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow)}
.box{background:var(--bg);border-radius:10px;padding:.8rem}
.toast{position:fixed;right:1rem;bottom:1rem;background:var(--ink);color:#fff;padding:.7rem 1rem;border-radius:10px;z-index:60;max-width:90vw}
@media (max-width:820px){.toast{bottom:4.5rem}}
.spinner{display:inline-block;width:14px;height:14px;border:2px solid #cfc7bc;border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite;vertical-align:middle}
@keyframes spin{to{transform:rotate(360deg)}}
.mt{margin-top:.7rem} .qty{width:4.5rem} ul.tight{margin:0;padding-left:1.1rem}