:root {
  --bg: #F3F6FA;
  --surface: #FFFFFF;
  --surface-2: #E9EEF6;
  --paper: #FFFFFF;
  --ink: #101A2B;
  --ink-2: #48546A;
  --ink-3: #79849A;
  --line: #D8DFEA;
  --line-soft: #E7ECF4;
  --navy: #14355F;
  --navy-ink: #FFFFFF;
  --gold: #97741C;
  --gold-soft: #F4EAD1;
  --ok: #17654A;
  --ok-soft: #DCEFE7;
  --warn: #8A5B0E;
  --warn-soft: #F8EBD3;
  --bad: #9C2B27;
  --bad-soft: #F8E1E0;
  --shadow: 0 1px 2px rgba(16, 26, 43, .06), 0 8px 24px -16px rgba(16, 26, 43, .28);
  --r: 10px;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0A111C;
    --surface: #121B29;
    --surface-2: #1A2534;
    --paper: #151F2E;
    --ink: #E6EBF3;
    --ink-2: #A6B1C3;
    --ink-3: #78859A;
    --line: #263243;
    --line-soft: #1E2938;
    --navy: #21456F;
    --navy-ink: #EAF1FB;
    --gold: #D7B263;
    --gold-soft: #2E2611;
    --ok: #59C398;
    --ok-soft: #102C24;
    --warn: #E0AC52;
    --warn-soft: #2E2413;
    --bad: #E8807B;
    --bad-soft: #321A1A;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 28px -18px rgba(0, 0, 0, .8);
  }
}

:root[data-theme="dark"] {
  --bg: #0A111C;
  --surface: #121B29;
  --surface-2: #1A2534;
  --paper: #151F2E;
  --ink: #E6EBF3;
  --ink-2: #A6B1C3;
  --ink-3: #78859A;
  --line: #263243;
  --line-soft: #1E2938;
  --navy: #21456F;
  --navy-ink: #EAF1FB;
  --gold: #D7B263;
  --gold-soft: #2E2611;
  --ok: #59C398;
  --ok-soft: #102C24;
  --warn: #E0AC52;
  --warn-soft: #2E2413;
  --bad: #E8807B;
  --bad-soft: #321A1A;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 28px -18px rgba(0, 0, 0, .8);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Source Sans 3", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

img { max-width: 100%; }
[hidden] { display: none !important; }

h1, h2, h3 { font-family: Bitter, Georgia, serif; margin: 0; text-wrap: balance; line-height: 1.2; }
.mono, .num { font-family: "IBM Plex Mono", ui-monospace, Menlo, monospace; font-variant-numeric: tabular-nums; }
.num { font-variant-numeric: tabular-nums; }

/* ---------- estructura ---------- */
.topbar {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 20;
  background: var(--navy);
  color: var(--navy-ink);
  border-bottom: 1px solid rgba(0, 0, 0, .2);
}
.topbar-in {
  max-width: 1180px;
  margin: 0 auto;
  padding-block: 10px;
  padding-inline: 16px;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: baseline; gap: 9px; margin-right: auto; }
.brand b { font-family: Bitter, Georgia, serif; font-weight: 700; font-size: 17px; }
.brand span { font-size: 11px; text-transform: uppercase; letter-spacing: .14em; opacity: .72; }
.nav { display: flex; gap: 2px; flex-wrap: wrap; }
.nav button {
  font: inherit; font-size: 14px; color: inherit; background: transparent;
  border: 0; border-radius: 7px; padding: 6px 11px; cursor: pointer; opacity: .78;
}
.nav button:hover { background: rgba(255, 255, 255, .1); opacity: 1; }
.nav button[aria-current="true"] { background: rgba(255, 255, 255, .16); opacity: 1; font-weight: 600; }
.nav button:focus-visible, .btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--gold); outline-offset: 2px;
}

main { max-width: 1180px; margin: 0 auto; padding-inline: 16px; padding-block: 22px 64px; }

.head { display: flex; align-items: flex-end; gap: 14px; flex-wrap: wrap; margin-bottom: 16px; }
.head h2 { font-size: 22px; }
.head p { margin: 3px 0 0; color: var(--ink-2); font-size: 14px; max-width: 62ch; }
.head .spacer { margin-left: auto; }

/* ---------- controles ---------- */
.btn {
  font: inherit; font-size: 14px; font-weight: 600; cursor: pointer;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  border-radius: 8px; padding: 7px 13px; display: inline-flex; align-items: center; gap: 7px;
}
.btn:hover { border-color: var(--ink-3); }
.btn.primary { background: var(--navy); border-color: var(--navy); color: var(--navy-ink); }
.btn.primary:hover { filter: brightness(1.12); }
.btn.ghost { background: transparent; }
.btn.small { font-size: 13px; padding: 4px 9px; border-radius: 7px; }
.btn.danger { color: var(--bad); border-color: var(--line); }
.btn.danger:hover { border-color: var(--bad); }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

label.field { display: block; }
label.field > span {
  display: block; font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-3); font-weight: 600; margin-bottom: 4px;
}
input[type="text"], input[type="number"], input[type="date"], input[type="email"],
input[type="password"], select, textarea {
  font: inherit; width: 100%; background: var(--surface); color: var(--ink);
  border: 1px solid var(--line); border-radius: 8px; padding: 7px 9px;
}
input[type="number"], .ta-right { text-align: right; font-variant-numeric: tabular-nums; }
textarea { resize: vertical; min-height: 68px; }
.grid { display: grid; gap: 12px; }
.g2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.g3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.g4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 760px) { .g2, .g3, .g4 { grid-template-columns: minmax(0, 1fr); } }

/* ---------- paneles ---------- */
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); box-shadow: var(--shadow); }
.panel > .panel-head {
  padding: 12px 16px; border-bottom: 1px solid var(--line-soft);
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
}
.panel > .panel-head h3 { font-size: 15px; }
.panel > .panel-body { padding: 16px; }
.panel + .panel { margin-top: 16px; }
/* Dentro de una rejilla manda el gap, no el margen entre paneles. */
.grid > .panel + .panel { margin-top: 0; }
.empty { color: var(--ink-3); font-size: 14px; padding: 24px 16px; }

/* ---------- tablas ---------- */
.tablewrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th {
  text-align: left; font-size: 11px; letter-spacing: .09em; text-transform: uppercase;
  color: var(--ink-3); font-weight: 600; padding: 8px 10px; border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
td { padding: 9px 10px; border-bottom: 1px solid var(--line-soft); vertical-align: middle; }
tbody tr:last-child td { border-bottom: 0; }
tr.clickable { cursor: pointer; }
tr.clickable:hover td { background: var(--surface-2); }
.cell-actions { text-align: right; white-space: nowrap; }
td.mono, td.num { white-space: nowrap; }

/* ---------- etiquetas de estado ---------- */
.badge {
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .04em;
  text-transform: uppercase; padding: 2px 8px; border-radius: 999px; white-space: nowrap;
}
.b-borrador, .b-pendiente, .b-pausada { background: var(--surface-2); color: var(--ink-2); }
.b-enviada { background: var(--gold-soft); color: var(--gold); }
.b-aceptada, .b-facturada, .b-cobrado, .b-activa, .b-emitida { background: var(--ok-soft); color: var(--ok); }
.b-rechazada, .b-caducada, .b-impagado { background: var(--bad-soft); color: var(--bad); }

.note {
  border-left: 3px solid var(--gold); background: var(--gold-soft);
  color: var(--ink); padding: 11px 14px; border-radius: 0 8px 8px 0; font-size: 14px;
}
.note.bad { border-color: var(--bad); background: var(--bad-soft); }
.note p { margin: 0; }
.note p + p { margin-top: 6px; }

/* ---------- editor ---------- */
.editor { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 16px; align-items: start; }
@media (max-width: 960px) { .editor { grid-template-columns: minmax(0, 1fr); } }

/* La tabla no se encoge: si no cabe, el contenedor hace scroll lateral. */
.lines { min-width: 540px; }
.lines th:nth-child(n+2), .lines td:nth-child(n+2) { text-align: right; }
.lines td .num, .lines td:nth-child(6) { white-space: nowrap; }
.lines td input, .lines td select { padding: 5px 7px; }
/* Sin flechas: en una tabla estrecha se comen el importe. */
.lines input[type="number"] { appearance: textfield; -moz-appearance: textfield; }
.lines input[type="number"]::-webkit-outer-spin-button,
.lines input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.lines .c-desc { min-width: 170px; }
.lines .c-num { width: 86px; }
.lines .c-iva { width: 84px; }
.lines .c-iva select { min-width: 70px; }

.totals { margin-left: auto; width: 100%; max-width: 320px; font-size: 14px; }
.totals div { display: flex; justify-content: space-between; gap: 16px; padding: 3px 0; }
.totals .grand {
  border-top: 1px solid var(--line); margin-top: 6px; padding-top: 8px;
  font-size: 17px; font-weight: 700; font-family: Bitter, Georgia, serif;
}

/* ---------- vista previa del documento ---------- */
.paper {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--r);
  box-shadow: var(--shadow); padding: 26px 26px 20px; font-size: 13px;
  position: sticky; top: calc(env(safe-area-inset-top, 0px) + 66px);
}
@media (max-width: 960px) { .paper { position: static; } }
.paper .p-top { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.paper .p-emisor b { font-family: Bitter, Georgia, serif; font-size: 16px; display: block; }
.paper .p-emisor > span { color: var(--ink-2); display: block; font-size: 12px; }
.paper .p-doc { text-align: right; }
.paper .p-doc .p-kind { font-family: Bitter, Georgia, serif; font-size: 15px; font-weight: 700; color: var(--gold); }
.paper .p-doc .p-num { font-family: "IBM Plex Mono", monospace; font-size: 14px; }
.paper .p-doc .p-meta { color: var(--ink-2); font-size: 12px; }
.paper .p-client { margin: 18px 0 14px; padding: 10px 12px; background: var(--surface-2); border-radius: 8px; }
.paper .p-client b { display: block; }
.paper .p-client > span { color: var(--ink-2); font-size: 12px; display: block; }
.paper table { font-size: 12.5px; min-width: 330px; }
.paper td.num { white-space: nowrap; }
.paper th, .paper td { padding: 6px; }
.paper .p-legal { margin-top: 16px; color: var(--ink-2); font-size: 11.5px; border-top: 1px solid var(--line-soft); padding-top: 10px; }
.p-label { font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--ink-3); font-weight: 600; }

.stack { display: flex; flex-direction: column; gap: 12px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.row.end { justify-content: flex-end; }
.muted { color: var(--ink-2); }
.small { font-size: 13px; }
.tiny { font-size: 12px; }
.pend { color: var(--bad); font-weight: 600; }

.toast {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(env(safe-area-inset-bottom, 0px) + 20px); z-index: 60;
  background: var(--navy); color: var(--navy-ink); padding: 10px 16px; border-radius: 999px;
  font-size: 14px; box-shadow: var(--shadow); max-width: calc(100% - 32px);
}
@media (prefers-reduced-motion: no-preference) {
  .toast { animation: rise .18s ease-out; }
  @keyframes rise { from { opacity: 0; transform: translate(-50%, 8px); } }
}

dialog {
  border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); color: var(--ink);
  padding: 0; width: min(560px, calc(100vw - 32px)); box-shadow: var(--shadow);
}
dialog::backdrop { background: rgba(10, 17, 28, .5); }
dialog .panel-head { padding: 12px 16px; border-bottom: 1px solid var(--line-soft); }
dialog .panel-body { padding: 16px; }
dialog .panel-foot { padding: 12px 16px; border-top: 1px solid var(--line-soft); display: flex; gap: 8px; justify-content: flex-end; }

/* ---------- entrada ---------- */
.entrar {
  min-height: 70vh; display: flex; align-items: center; justify-content: center;
  padding-inline: 16px;
}
.entrar .panel { width: min(360px, 100%); }
.entrar h1 { font-size: 20px; margin-bottom: 4px; }
.entrar p { color: var(--ink-2); font-size: 14px; margin: 0 0 14px; }
.entrar .error { color: var(--bad); font-size: 13px; min-height: 18px; margin-top: 8px; }