:root{
  --bg:#f4f5f7; --card:#fff; --ink:#18181b; --muted:#71717a; --line:#e4e4e7; --soft:#f4f4f5;
  --brand:#2563eb; --brand-ink:#fff;
  --side:#0f172a; --side-ink:#cbd5e1; --side-on:#fff; --side-muted:#64748b;
  --side-hover:rgba(255,255,255,.06); --side-active:rgba(255,255,255,.12); --side-line:rgba(255,255,255,.08);
  --ok:#15803d; --ok-bg:#f0fdf4; --warn:#a16207; --warn-bg:#fefce8; --err:#b91c1c; --err-bg:#fef2f2;
  --info:#1d4ed8; --info-bg:#eff6ff; --closed:#334155; --closed-bg:#f1f5f9;
  --r:12px; --shadow:0 1px 2px rgba(0,0,0,.04),0 1px 8px rgba(0,0,0,.04);
}
/* Fondo oscuro: automático según el dispositivo salvo que el usuario elija "claro"; o forzado con "oscuro" */
@media (prefers-color-scheme:dark){:root:not([data-modo=claro]){
  --bg:#0b0b0e; --card:#18181b; --ink:#f4f4f5; --muted:#a1a1aa; --line:#27272a; --soft:#202024;
  --ok-bg:#052e16; --ok:#4ade80; --warn-bg:#2a2006; --warn:#facc15; --err-bg:#2b0b0b; --err:#f87171;
  --info-bg:#0b1a3a; --info:#93c5fd; --closed-bg:#1e293b; --closed:#cbd5e1; --shadow:none;
}}
:root[data-modo=oscuro]{
  --bg:#0b0b0e; --card:#18181b; --ink:#f4f4f5; --muted:#a1a1aa; --line:#27272a; --soft:#202024;
  --ok-bg:#052e16; --ok:#4ade80; --warn-bg:#2a2006; --warn:#facc15; --err-bg:#2b0b0b; --err:#f87171;
  --info-bg:#0b1a3a; --info:#93c5fd; --closed-bg:#1e293b; --closed:#cbd5e1; --shadow:none;
}
:root[data-modo=claro]{color-scheme:light} :root[data-modo=oscuro]{color-scheme:dark}

/* Color del menú lateral (preferencia de cada usuario) */
:root[data-menu=negro]{--side:#09090b}
:root[data-menu=azul]{--side:#1d4ed8;--side-ink:#dbeafe;--side-muted:#bfdbfe}
:root[data-menu=verde]{--side:#065f46;--side-ink:#d1fae5;--side-muted:#a7f3d0}
:root[data-menu=morado]{--side:#5b21b6;--side-ink:#ede9fe;--side-muted:#c4b5fd}
:root[data-menu=vino]{--side:#7f1d1d;--side-ink:#fee2e2;--side-muted:#fca5a5}
:root[data-menu=rosa]{--side:#be185d;--side-ink:#fce7f3;--side-muted:#f9a8d4}
:root[data-menu=claro]{--side:var(--card);--side-ink:var(--muted);--side-on:var(--ink);--side-muted:var(--muted);
  --side-hover:var(--soft);--side-active:color-mix(in srgb,var(--brand) 12%,transparent);--side-line:var(--line)}
:root[data-menu=claro] .side{border-right:1px solid var(--line)}
:root[data-menu=claro] .side a.on{color:var(--brand)}
:root[data-menu=claro] .side-foot .salir{color:var(--err)}
*{box-sizing:border-box}
html,body{margin:0}
body{font:14px/1.5 Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased}
a{color:var(--brand);text-decoration:none} a:hover{text-decoration:underline}
h1,h2{margin:0;letter-spacing:-.01em} h2{font-size:15px;font-weight:600;margin-bottom:14px}
code{background:var(--soft);padding:1px 5px;border-radius:4px;font-size:12px}
.muted{color:var(--muted)} .small{font-size:12px}
.up{color:var(--err)} .down{color:var(--ok)} .neg{color:var(--err)} .pos{color:var(--ok)}
.good{color:var(--ok);font-weight:600} .bad{color:var(--err);font-weight:600}

/* shell */
.shell{display:flex;min-height:100vh}
.side{width:232px;background:var(--side);color:var(--side-ink);display:flex;flex-direction:column;position:sticky;top:0;height:100vh;flex-shrink:0}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--side-on);padding:20px 18px;font-size:15px;line-height:1.2}
.brand small{display:block;font-weight:500;font-size:11.5px;color:var(--side-muted);margin-top:2px}
.logo{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:8px;background:var(--brand);color:#fff;font-size:12px;font-weight:700}
.side nav{display:flex;flex-direction:column;padding:6px 10px;gap:2px;flex:1}
.side a{color:var(--side-ink);padding:9px 10px;border-radius:8px;display:flex;align-items:center;gap:10px;font-weight:500}
.side a:hover{background:var(--side-hover);text-decoration:none}
.side a.on{background:var(--side-active);color:var(--side-on)}
.side svg{width:18px;height:18px;fill:currentColor;opacity:.85}
.side-foot{padding:12px 10px;border-top:1px solid var(--side-line);display:flex;flex-direction:column;gap:2px}
.side-foot a{flex-direction:column;align-items:flex-start;gap:0} .side-foot small{color:var(--side-muted);font-size:11px}
.side-foot .salir{color:#fca5a5;flex-direction:row}
.main{flex:1;min-width:0}
.topbar{display:flex;align-items:center;gap:12px;padding:18px 28px 0}
.topbar h1{font-size:22px;font-weight:700}
.menu-btn{display:none;background:none;border:0;font-size:22px;color:var(--ink);cursor:pointer}
.content{padding:18px 28px 40px;display:flex;flex-direction:column;gap:18px;max-width:1400px}

/* cards & grids */
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px 20px;box-shadow:var(--shadow);min-width:0}
.card.narrow{max-width:460px}
.card-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px}
.card-head h2{margin:0}
.grid-2-1{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:18px;align-items:start}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;align-items:start}
.lbl{font-size:13px;font-weight:500;margin-bottom:8px}
.swatches{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.swatch{flex-direction:column;align-items:center;gap:4px;cursor:pointer;font-weight:400;position:relative}
.swatch input{position:absolute;opacity:0}
.swatch span{width:100%;height:44px;border-radius:10px;border:1px solid var(--line);box-shadow:inset 0 0 0 3px var(--card)}
.swatch input:checked + span{outline:2.5px solid var(--brand);outline-offset:1px}
.swatch input:focus-visible + span{outline:2.5px dashed var(--brand)}
.swatch small{font-size:11.5px;color:var(--muted)}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;align-items:start}
.stack-cards{display:flex;flex-direction:column;gap:18px}
.kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.kpi{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;display:flex;flex-direction:column;gap:2px;box-shadow:var(--shadow)}
.kpi span{color:var(--muted);font-size:12px;font-weight:500}
.kpi b{font-size:22px;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.kpi small{font-size:12px}
.month-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.nav-months,.month-actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.month-actions form{margin:0}

/* forms */
input,select,textarea{font:inherit;color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:8px;padding:8px 10px;width:100%;min-width:0}
input:focus,select:focus,textarea:focus{outline:2px solid color-mix(in srgb,var(--brand) 35%,transparent);border-color:var(--brand)}
input[type=color]{padding:2px;height:38px}
input[type=checkbox]{width:auto}
input.num{text-align:right;font-variant-numeric:tabular-nums}
label{display:flex;flex-direction:column;gap:5px;font-size:13px;font-weight:500}
label.check{flex-direction:row;align-items:center;gap:8px;font-weight:400}
.stack{display:flex;flex-direction:column;gap:12px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.row-btns{display:flex;gap:8px}
.pw{display:flex;gap:6px}
.inline{margin:0} .inline-label{flex-direction:row;align-items:center;gap:8px} .inline-label select{width:auto}
.add-row{display:grid;grid-template-columns:1.1fr 1.5fr .8fr 1.2fr auto auto;gap:8px;margin-bottom:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:var(--brand);color:var(--brand-ink);border:1px solid var(--brand);border-radius:8px;padding:8px 14px;font:inherit;font-weight:600;cursor:pointer;white-space:nowrap}
.btn:hover{filter:brightness(1.07);text-decoration:none}
.btn-sm{padding:5px 10px;font-size:12px}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line)} .btn-ghost:hover{background:var(--soft)}
.btn-dark{background:#0f172a;border-color:#0f172a;color:#fff}
.btn-danger-ghost{background:transparent;color:var(--err);border-color:transparent} .btn-danger-ghost:hover{background:var(--err-bg)}

/* tables */
.table-wrap{overflow-x:auto;margin:0 -4px}
.tbl{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
.tbl th{text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);font-weight:600;padding:8px;border-bottom:1px solid var(--line)}
.tbl td{padding:8px;border-bottom:1px solid var(--line);vertical-align:middle}
.tbl .num{text-align:right;white-space:nowrap}
.tbl tfoot td{font-weight:700;border-bottom:0;border-top:2px solid var(--ink);font-size:15px}
.tbl tr.inactive td{opacity:.55}
.tbl .actions{text-align:right;white-space:nowrap}
.tbl .actions form{display:inline;margin:0}
.cat-row td{background:var(--soft);font-weight:600;font-size:13px}
.edit-row td{background:var(--info-bg)} .edit-row .add-row{margin:0}
.tbl-dist input{max-width:130px;margin-left:auto}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;margin-right:8px;vertical-align:1px}
.pill{display:inline-block;padding:2px 8px;border-radius:99px;font-size:11px;font-weight:600;background:var(--soft);color:var(--muted)}
.pill-open{background:var(--info-bg);color:var(--info)} .pill-closed{background:var(--closed-bg);color:var(--closed)} .pill-warn{background:var(--warn-bg);color:var(--warn)}
.tag-new{font-size:10px;font-weight:700;text-transform:uppercase;color:var(--info);background:var(--info-bg);padding:1px 6px;border-radius:4px}
.dist-foot{display:flex;justify-content:flex-end;align-items:center;gap:14px;margin-top:12px}

/* bars & lists */
.bar-line{margin-bottom:10px}
.bar-label{display:flex;justify-content:space-between;font-size:12px;margin-bottom:4px;gap:8px} .bar-label span:last-child{color:var(--muted);font-variant-numeric:tabular-nums}
.bar{height:8px;background:var(--soft);border-radius:99px;overflow:hidden} .bar i{display:block;height:100%;border-radius:99px}
.list{list-style:none;margin:0;padding:0}
.list li{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid var(--line);font-variant-numeric:tabular-nums}
.list li:last-child{border:0}
.chart-box{position:relative;height:300px} .chart-box.sm{height:300px}

/* alerts */
.alert{padding:10px 14px;border-radius:10px;border:1px solid transparent;font-size:13px}
.alert-ok{background:var(--ok-bg);color:var(--ok)} .alert-error{background:var(--err-bg);color:var(--err)}
.alert-warn{background:var(--warn-bg);color:var(--warn)} .alert-closed{background:var(--closed-bg);color:var(--closed);font-weight:500}
.alerts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;max-height:330px;overflow:auto}
.alerts li{display:flex;gap:10px;padding:10px 12px;border-radius:10px;border-left:3px solid}
.alerts .ic{font-size:15px;line-height:1.3} .alerts p{margin:2px 0 0;font-size:12.5px;color:var(--muted)} .alerts b{font-size:13px}
.al-alta{background:var(--err-bg);border-color:var(--err)} .al-media{background:var(--warn-bg);border-color:#eab308}
.al-info{background:var(--info-bg);border-color:var(--info)} .al-bien{background:var(--ok-bg);border-color:var(--ok)}

/* auth */
.guest{min-height:100vh;display:grid;place-items:center;padding:20px}
.auth{width:100%;max-width:400px;padding:28px}
.auth h2{font-size:18px;margin:10px 0 6px}
.brand-big{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px}
pre.err{white-space:pre-wrap;background:var(--err-bg);color:var(--err);padding:10px;border-radius:8px;font-size:12px}
.empty ol{line-height:2}

@media (max-width:1100px){
  .grid-2-1,.grid-3,.grid-2{grid-template-columns:1fr}
  .kpis{grid-template-columns:repeat(2,minmax(0,1fr))}
  .add-row{grid-template-columns:1fr 1fr}
  .add-row .btn{grid-column:auto}
}
@media (max-width:760px){
  .side{position:fixed;left:-240px;z-index:20;transition:left .2s;box-shadow:0 0 40px rgba(0,0,0,.3)}
  .side.open{left:0}
  .menu-btn{display:block}
  .topbar{padding:14px 16px 0} .content{padding:14px 16px 32px}
  .kpi b{font-size:18px}
  .tbl-dist input{max-width:96px}
}
@media print{
  .side,.topbar .menu-btn,.month-head,.add-row,.actions,.dist-foot,#btnAuto,.stack-cards form{display:none!important}
  body{background:#fff} .card,.kpi{box-shadow:none;border-color:#ccc} .grid-2-1{grid-template-columns:1fr}
}