/* ===== Tokens ===== */
:root{
  --bg:#f4f6fa;--card:#fff;--ink:#162033;--muted:#667085;--line:#e6eaf1;--soft:#f0f3f8;
  --brand:#0f766e;--brand-d:#0b5d57;--brand-l:#e1f4f1;
  --red:#dc2626;--red-l:#fee8e6;--warn:#b45309;--warn-l:#fff3d6;--ok-l:#e1f4ec;
  --side:#0e2a33;--side-ink:#b8cdd2;--side-hi:#16414c;
  --r:14px;--r-s:9px;--sh:0 1px 2px rgba(16,24,40,.05),0 4px 14px rgba(16,24,40,.05);
  --font:Inter,"Segoe UI",system-ui,-apple-system,Roboto,sans-serif;
}
@media(prefers-color-scheme:dark){:root:not(.light){
  --bg:#0b1218;--card:#131c25;--ink:#e6edf3;--muted:#8a9aa8;--line:#223040;--soft:#192531;
  --brand:#2dd4bf;--brand-d:#5eead4;--brand-l:#0f2f2f;--red-l:#3a1816;--warn-l:#33270d;--ok-l:#0f2f24;
  --side:#08141a;--side-hi:#13303a;--sh:0 1px 2px rgba(0,0,0,.4)}
  .btn{color:#06201d}.btn.danger{color:#fff}.btn.sec{color:var(--ink)}
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:14.5px/1.5 var(--font);background:var(--bg);color:var(--ink);display:flex;min-height:100vh}
a{color:var(--brand);text-decoration:none} a:hover{text-decoration:underline}
h1{margin:0;font-size:24px;letter-spacing:-.02em} h2{font-size:16px;margin:26px 0 10px}
.ico{width:19px;height:19px;flex-shrink:0}

/* ===== Sidebar ===== */
.side{width:248px;background:linear-gradient(180deg,var(--side),#0a1d24);color:var(--side-ink);display:flex;flex-direction:column;position:sticky;top:0;height:100vh;flex-shrink:0;z-index:40}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;padding:20px 20px 16px;color:#fff;letter-spacing:-.01em}
.logo{display:grid;place-items:center;width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,#14b8a6,#0f766e);color:#fff;font-size:22px;font-weight:700;line-height:1}
.side nav{flex:1;overflow:auto;padding:4px 12px}
.side nav a{display:flex;align-items:center;gap:12px;padding:10px 12px;margin-bottom:2px;border-radius:10px;color:var(--side-ink);font-weight:500;text-decoration:none;transition:.15s}
.side nav a:hover{background:var(--side-hi);color:#fff}
.side nav a.on{background:var(--brand);color:#fff;box-shadow:0 4px 12px rgba(15,118,110,.35)}
.me{display:flex;align-items:center;gap:10px;padding:14px 16px;border-top:1px solid rgba(255,255,255,.08)}
.me .av{width:34px;height:34px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:700;flex-shrink:0}
.me .who{flex:1;min-width:0;display:flex;flex-direction:column;line-height:1.2;color:#fff}
.me .who b{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.me .who small{color:var(--side-ink);text-transform:capitalize}
.me a{color:var(--side-ink);padding:6px;border-radius:8px;display:grid}.me a:hover{background:var(--side-hi);color:#fff}

/* ===== Topbar móvil ===== */
.topbar{display:none}
.scrim{display:none}
.main{flex:1;min-width:0;padding:28px 32px 48px;max-width:1500px}
.pagehead{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}

/* ===== Tarjetas, tablas ===== */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;margin-bottom:18px;box-shadow:var(--sh);overflow-x:auto}
.card.narrow{max-width:560px}
.card.login{padding:28px}
table{width:100%;border-collapse:collapse}
th,td{padding:11px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{font-size:11.5px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:600;background:var(--soft);white-space:nowrap}
th:first-child{border-radius:9px 0 0 9px}th:last-child{border-radius:0 9px 9px 0}
tbody tr:hover{background:var(--soft)}
tbody tr:last-child td{border-bottom:0}
tfoot td{border-top:2px solid var(--line);border-bottom:0}
.r{text-align:right}.low{color:var(--red);font-weight:700}.muted{color:var(--muted)}
small{color:var(--muted)}
.empty{text-align:center;color:var(--muted);padding:28px}

/* ===== Formularios ===== */
label{display:block;margin-bottom:14px;font-size:12.5px;font-weight:600;color:var(--muted)}
input,select,textarea{display:block;width:100%;padding:10px 12px;border:1.5px solid var(--line);border-radius:var(--r-s);font:inherit;font-weight:400;color:var(--ink);background:var(--card);margin-top:5px;transition:.15s}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-l)}
input[type=checkbox]{display:inline;width:auto;margin:0 8px 0 0;accent-color:var(--brand)}
label.chk{color:var(--ink);font-weight:500}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--brand);color:#fff;border:0;border-radius:var(--r-s);padding:10px 18px;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;transition:.15s;min-height:40px}
.btn:hover{background:var(--brand-d);text-decoration:none}
.btn.sec{background:var(--soft);color:var(--ink);border:1px solid var(--line)}.btn.sec:hover{background:var(--line)}
.btn.danger{background:var(--red);color:#fff}.btn.danger:hover{background:#b91c1c}
.btn.big{width:100%;padding:14px;font-size:16px;margin-top:10px}
.btn:disabled{opacity:.6;cursor:wait}
.link{background:none;border:0;padding:0;font:inherit;cursor:pointer;color:var(--brand)}.link.danger{color:var(--red)}
.bar{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.bar form{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.bar input,.bar select{margin:0;width:auto;min-width:0}
form.inline{display:inline-flex;gap:8px;align-items:center;flex-wrap:wrap}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:0 16px}
.grid .w2{grid-column:span 2}

/* ===== Avisos y etiquetas ===== */
.alert{padding:12px 16px;border-radius:var(--r-s);margin-bottom:16px;background:var(--ok-l);color:#0b5a49;border:1px solid rgba(15,118,110,.2)}
.alert.err{background:var(--red-l);color:#991b1b;border-color:rgba(220,38,38,.25)}
.alert.warn{background:var(--warn-l);color:#7a4a05;border-color:rgba(180,83,9,.25)}
.tag{display:inline-block;font-size:11px;font-weight:600;padding:2px 9px;border-radius:99px;background:var(--soft);color:var(--muted);margin:0 3px 3px 0;white-space:nowrap}
.tag.red{background:var(--red-l);color:var(--red)}.tag.warn{background:var(--warn-l);color:var(--warn)}

/* ===== Dashboard ===== */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;display:flex;flex-direction:column;gap:6px;color:var(--ink);box-shadow:var(--sh);position:relative;overflow:hidden;text-decoration:none!important}
.stat::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--brand)}
a.stat:hover{transform:translateY(-2px);transition:.15s}
.stat span{color:var(--muted);font-size:13px;font-weight:500}.stat b{font-size:28px;letter-spacing:-.02em}.stat small{color:var(--muted)}

/* ===== POS ===== */
.pos-grid{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:18px;align-items:start}
.big{font-size:18px;padding:13px 14px}
.resultados{position:relative}
.resultados .op{padding:10px 12px;border:1px solid var(--line);border-top:0;background:var(--card);cursor:pointer;display:flex;justify-content:space-between;gap:10px}
.resultados .op:first-child{border-top:1px solid var(--line);border-radius:var(--r-s) var(--r-s) 0 0}
.resultados .op:last-child{border-radius:0 0 var(--r-s) var(--r-s)}
.resultados .op:hover{background:var(--brand-l)}
#p-carrito input{width:76px;margin:0;padding:7px 8px}
.side-pos{position:sticky;top:16px}
.totales div{display:flex;justify-content:space-between;padding:4px 0;color:var(--muted)}.totales b{color:var(--ink)}
.totales .gran{font-size:24px;border-top:2px dashed var(--line);margin-top:8px;padding-top:12px;color:var(--ink);font-weight:700}
.cambio{font-size:16px;margin:8px 0}
.cliente{border-bottom:1px solid var(--line);margin-bottom:14px;padding-bottom:8px}
details summary{cursor:pointer;color:var(--brand);font-weight:600;margin:6px 0}
details input{margin-bottom:8px}

/* ===== Login ===== */
body.login{display:block;background:radial-gradient(1200px 600px at 20% -10%,#14b8a633,transparent),radial-gradient(900px 500px at 100% 110%,#0f766e33,transparent),var(--bg)}
body.login .main{max-width:420px;margin:0 auto;padding:11vh 18px 24px}
body.login h1{text-align:center;margin-bottom:18px}

/* ===== Factura ===== */
.factura-body{display:block;background:#fff;color:#000}
.factura{width:80mm;margin:10px auto;font:12px/1.35 ui-monospace,Consolas,monospace;color:#000}
.factura table th,.factura table td{padding:2px 3px;border:0;background:none;font-size:12px;text-transform:none;letter-spacing:0;color:#000}
.factura .c{text-align:center}.factura .emp{font-size:15px}.factura hr{border:0;border-top:1px dashed #000;margin:6px 0}
.factura .tot{display:flex;justify-content:space-between}.factura .gran{font-weight:700;font-size:14px}.factura .anulada{color:#c00}
@media print{.noprint{display:none}.factura{margin:0}}

/* ===== Tablet / móvil ===== */
@media(max-width:1000px){.pos-grid{grid-template-columns:1fr}.side-pos{position:static}}
@media(max-width:900px){
  body{display:block}
  .topbar{display:flex;align-items:center;gap:12px;position:sticky;top:0;z-index:30;height:56px;padding:0 14px;background:var(--side);color:#fff;box-shadow:0 2px 10px rgba(0,0,0,.2)}
  .burger{background:none;border:0;color:#fff;display:grid;place-items:center;width:40px;height:40px;border-radius:10px;cursor:pointer}
  .burger:active{background:var(--side-hi)}
  .tb-brand{font-weight:800;font-size:18px}
  .side{position:fixed;left:0;top:0;bottom:0;transform:translateX(-102%);transition:transform .25s ease;width:274px}
  body.menu-open .side{transform:none;box-shadow:8px 0 30px rgba(0,0,0,.35)}
  .scrim{display:block;position:fixed;inset:0;background:rgba(0,0,0,.5);opacity:0;pointer-events:none;transition:.25s;z-index:35}
  body.menu-open .scrim{opacity:1;pointer-events:auto}
  .main{padding:18px 14px 40px}
  h1{font-size:21px}
  .card{padding:14px}
}
@media(max-width:640px){
  .grid .w2{grid-column:span 1}
  .bar,.bar form{width:100%}.bar form>*{flex:1 1 auto}.bar>a.btn,.bar>span{width:100%}.bar>span .btn{margin-bottom:6px}
  .stat b{font-size:24px}
  .btn{min-height:44px}
  input,select{font-size:16px}               /* evita el zoom automático en iOS */
  /* Tablas convertidas en tarjetas apiladas (las etiquetas las pone app.js) */
  table.stack thead{display:none}
  table.stack,table.stack tbody,table.stack tfoot,table.stack tr,table.stack td{display:block;width:100%}
  table.stack tr{border:1px solid var(--line);border-radius:12px;padding:6px 12px;margin-bottom:10px;background:var(--card)}
  table.stack tbody tr:hover{background:var(--card)}
  table.stack td{display:flex;justify-content:space-between;gap:14px;border:0;padding:6px 0;text-align:right}
  table.stack td::before{content:attr(data-label);font-size:11.5px;font-weight:600;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);text-align:left;flex-shrink:0;padding-top:2px}
  table.stack td:not([data-label])::before,table.stack td[data-label=""]::before{content:none}
  table.stack td[colspan]{display:block;text-align:center}
  table.stack td.r{text-align:right}
  table.stack tfoot tr{background:var(--soft)}
  #p-carrito input{width:100%}
  .pos-grid .card{padding:12px}
}