/* Contabilidad Tecking3D — móvil primero, tema claro/oscuro automático. */
:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1c1f24;
  --muted: #6b7280;
  --border: #e3e5e9;
  --accent: #1d4ed8;
  --accent-text: #ffffff;
  --ok: #15803d;
  --ok-bg: #e8f6ec;
  --warn: #b45309;
  --warn-bg: #fff4e0;
  --danger: #c62828;
  --danger-bg: #fdecec;
  --info-bg: #e8effd;
  --shadow: 0 1px 2px rgb(0 0 0 / 6%), 0 1px 6px rgb(0 0 0 / 4%);
  --radius: 12px;
  /* Gráficas: una serie (azul), su banda de rango y una línea de referencia neutra. Validado con el script de dataviz. */
  --serie-1: #2a78d6;
  --serie-1-banda: rgba(42, 120, 214, .16);
  --ref: #8a8f98;
  --serie-2: #eb6834;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --card: #1b1e24;
    --text: #e8eaed;
    --muted: #9aa0a6;
    --border: #2c3038;
    --accent: #6b9bff;
    --accent-text: #0b1220;
    --ok: #4ade80;
    --ok-bg: #12301d;
    --warn: #f0a640;
    --warn-bg: #3a2a10;
    --danger: #ef6b6b;
    --danger-bg: #3a1616;
    --info-bg: #16233a;
    --shadow: none;
    --serie-1: #3987e5;
    --serie-1-banda: rgba(57, 135, 229, .22);
    --ref: #8f959e;
    --serie-2: #d95926;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding-bottom: calc(72px + env(safe-area-inset-bottom));
  -webkit-text-size-adjust: 100%;
}
[x-cloak] { display: none !important; }
h1, h2, h3 { margin: 0 0 .5rem; line-height: 1.2; }
h1 { font-size: 1.1rem; }
h2 { font-size: 1.1rem; }
h3 { font-size: .98rem; }
a { color: var(--accent); }
small, .muted { color: var(--muted); }
.num { font-variant-numeric: tabular-nums; white-space: nowrap; }

header.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: .5rem;
  padding: calc(.6rem + env(safe-area-inset-top)) 1rem .6rem;
  background: var(--card); border-bottom: 1px solid var(--border);
}
header.top h1 { flex: 1; margin: 0; }
main { max-width: 760px; margin: 0 auto; padding: 1rem; }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 1rem; margin-bottom: 1rem;
}
.card > h2:first-child, .card > h3:first-child { margin-top: 0; }
.row { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.grow { flex: 1; min-width: 0; }
.stack > * + * { margin-top: .75rem; }

/* Botones y formularios */
button, .btn {
  appearance: none; border: 1px solid var(--border); background: var(--card); color: var(--text);
  border-radius: 10px; padding: .6rem 1rem; font: inherit; font-weight: 600; cursor: pointer;
  min-height: 44px; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
}
button.primary, .btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
button.danger { color: var(--danger); border-color: var(--danger); }
button.sm, .btn.sm { min-height: 36px; padding: .35rem .75rem; font-size: .9rem; }
button:disabled { opacity: .55; cursor: default; }
button.link { border: 0; background: none; color: var(--accent); padding: .25rem 0; min-height: 0; font-weight: 500; }
.block { width: 100%; }

label { display: block; font-size: .85rem; color: var(--muted); margin-bottom: .25rem; }
input, select, textarea {
  width: 100%; font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 10px; padding: .65rem .75rem; min-height: 44px;
  font-size: 16px; /* evita el zoom automático de iOS */
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; }
.field + .field { margin-top: .75rem; }

/* Avisos */
.alert { border-radius: 10px; padding: .75rem .9rem; margin-bottom: 1rem; }
.alert.danger { background: var(--danger-bg); color: var(--danger); }
.alert.warn { background: var(--warn-bg); color: var(--warn); }
.alert.info { background: var(--info-bg); }
.alert.ok { background: var(--ok-bg); color: var(--ok); }

.badge { display: inline-block; font-size: .75rem; font-weight: 700; padding: .15rem .5rem; border-radius: 999px; background: var(--info-bg); }
.badge.ok { background: var(--ok-bg); color: var(--ok); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }
.badge.danger { background: var(--danger-bg); color: var(--danger); }

/* Listas */
ul.list { list-style: none; margin: 0; padding: 0; }
ul.list > li { padding: .65rem 0; border-top: 1px solid var(--border); }
ul.list > li:first-child { border-top: 0; }
.kv { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .25rem .75rem; }
.kv > :nth-child(odd) { color: var(--muted); }

/* Menú de "Más" */
.menu a {
  display: flex; align-items: center; gap: .75rem; padding: .85rem 1rem; color: var(--text); text-decoration: none;
  border-top: 1px solid var(--border);
}
.menu a:first-child { border-top: 0; }
.menu a::after { content: "›"; margin-left: auto; color: var(--muted); font-size: 1.3rem; }
.menu { padding: 0; overflow: hidden; }

/* Navegación inferior */
nav.bottom {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 20;
  display: grid; grid-template-columns: repeat(5, 1fr);
  background: var(--card); border-top: 1px solid var(--border);
  padding-bottom: env(safe-area-inset-bottom);
}
nav.bottom a {
  display: flex; flex-direction: column; align-items: center; gap: 2px; padding: .5rem 0 .55rem;
  color: var(--muted); text-decoration: none; font-size: .68rem; font-weight: 600; white-space: nowrap; letter-spacing: -.01em; min-width: 0;
}
nav.bottom a .ico { font-size: 1.25rem; line-height: 1; }
nav.bottom a.on { color: var(--accent); }

/* Login */
.login { max-width: 400px; margin: 8vh auto 0; padding: 1rem; }
.login .logo { width: 56px; height: 56px; display: block; margin: 0 auto 1rem; }
.login h1 { text-align: center; font-size: 1.3rem; }

/* Toast */
.toast {
  position: fixed; left: 50%; bottom: calc(84px + env(safe-area-inset-bottom)); transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: .6rem 1rem; border-radius: 10px; z-index: 50;
  max-width: calc(100% - 2rem); box-shadow: 0 4px 16px rgb(0 0 0 / 25%);
}
.toast.error { background: var(--danger); color: #fff; }

table.simple { width: 100%; border-collapse: collapse; font-size: .9rem; }
table.simple th, table.simple td { text-align: left; padding: .45rem .3rem; border-top: 1px solid var(--border); vertical-align: top; }
table.simple th { color: var(--muted); font-weight: 600; border-top: 0; }
.scroll-x { overflow-x: auto; }

/* --- Fase 2: ventas --- */
.tiles { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; margin-bottom: 1rem; }
.tile {
  display: flex; flex-direction: column; gap: .15rem; padding: .8rem; border-radius: var(--radius);
  background: var(--card); border: 1px solid var(--border); color: var(--muted); text-decoration: none; font-size: .85rem;
}
.tile-n { color: var(--text); font-size: 1.25rem; font-weight: 700; }
.tile.warn { border-color: var(--warn); }
.tile.warn .tile-n { color: var(--warn); }
.chips { display: flex; gap: .4rem; overflow-x: auto; padding-bottom: .5rem; margin-bottom: .5rem; -webkit-overflow-scrolling: touch; }
.chip { min-height: 34px; padding: .3rem .8rem; border-radius: 999px; font-weight: 500; white-space: nowrap; font-size: .88rem; }
.chip.on { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
a.card.venta { display: block; color: var(--text); text-decoration: none; padding: .8rem 1rem; margin-bottom: .6rem; }
.saldo-card { position: sticky; top: calc(56px + env(safe-area-inset-top)); z-index: 5; }
.saldo { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin: .6rem 0; }
.saldo > div { display: flex; flex-direction: column; }
.saldo b { font-size: 1.05rem; }
.txt-ok { color: var(--ok); } .txt-warn { color: var(--warn); } .txt-danger { color: var(--danger); }
.tachado { text-decoration: line-through; opacity: .7; }
.aging { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin: .5rem 0; }
.aging > div { display: flex; flex-direction: column; padding: .5rem; border-radius: 10px; background: var(--bg); }
.aging > div.warn { background: var(--warn-bg); }
.item-form { border: 1px dashed var(--border); border-radius: 10px; padding: .6rem; display: flex; flex-direction: column; gap: .5rem; }
.item-form label { margin-bottom: .1rem; }
ul.timeline { list-style: none; margin: 0; padding: 0; }
ul.timeline li { display: flex; gap: .6rem; padding: .55rem 0; border-top: 1px solid var(--border); }
ul.timeline li:first-child { border-top: 0; }
.t-ico { width: 1.5rem; text-align: center; flex: none; }
.kv .num { text-align: right; }

/* --- Fase 3: movimientos --- */
a.mov { color: var(--text); text-decoration: none; }
.seg { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; }
.seg button { border: 0; border-radius: 0; }
.seg button.on { background: var(--accent); color: var(--accent-text); }
label.check { display: flex; align-items: center; gap: .5rem; color: var(--text); font-size: .95rem; }
label.check input { width: auto; min-height: 0; }
details.card summary { cursor: pointer; }
.chip:disabled { opacity: 1; }

/* --- Fase 4: inversiones y retorno --- */
.barra { height: 14px; border-radius: 999px; background: var(--bg); border: 1px solid var(--border); overflow: hidden; margin: .6rem 0 .3rem; }
.barra > div { height: 100%; background: var(--serie-1); border-radius: 999px; }
.grafica { position: relative; height: 260px; margin-top: .5rem; }
.esc { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 52%); gap: .45rem .75rem; align-items: baseline; }
.esc b { text-align: right; white-space: normal; }
.hero-n { font-size: 1.6rem; font-weight: 700; }

/* --- Fase 6: tablero y reportes --- */
.tile.kpi { gap: .1rem; }
.tile.kpi .tile-n { font-size: 1.1rem; }
.tile.kpi small { font-size: .72rem; }
table.reporte td, table.reporte th { white-space: nowrap; }
table.reporte td.b { font-weight: 700; }
table.reporte td:first-child { position: sticky; left: 0; background: var(--card); }
.barra.fina { height: 8px; margin: .25rem 0 .55rem; }
.comp + .comp { margin-top: .1rem; }
ul.list a.row { color: var(--text); text-decoration: none; }