/* ====== Variables de color y tipografía ====== */
:root {
  --bg: #eceff3;
  --panel: #ffffff;
  --ink: #1c2530;
  --muted: #5d6877;
  --line: #cfd6df;
  --accent: #1f3a5f;
  --accent-hover: #16294a;
  --danger: #a82f2f;
  --on-accent: #ffffff;
  font-family: "Public Sans", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg:#12171d; --panel:#1b222b; --ink:#e8edf3; --muted:#9aa6b5; --line:#2e3946; --accent:#7ea6e0; --accent-hover:#9bbbea; --danger:#e07a7a; --on-accent:#10151b; }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin:0; background:var(--bg); color:var(--ink); font-size:15px; line-height:1.5; }
h1 { font-size:1.45rem; margin:0 0 .25rem; letter-spacing:-.01em; }
h2 { font-size:1.1rem; margin:0 0 1rem; }
.wrap { max-width:1180px; margin:0 auto; padding:24px 18px 60px; }
.top { display:flex; justify-content:space-between; align-items:flex-start; gap:12px; }
.sub { color:var(--muted); margin:0 0 24px; }

/* ====== Estructura: formulario + vista previa ====== */
.grid { display:grid; gap:22px; grid-template-columns:minmax(0,420px) minmax(0,1fr); align-items:start; }
@media (max-width:900px){ .grid { grid-template-columns:1fr; } }
.panel { background:var(--panel); border:1px solid var(--line); border-radius:10px; padding:20px; }

/* ====== Formulario ====== */
label { display:block; font-weight:600; font-size:.85rem; margin:0 0 4px; }
.field { margin-bottom:14px; }
.row { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
input[type=text], input[type=date], input[type=number], input[type=password], textarea {
  width:100%; padding:10px 11px; font:inherit; color:var(--ink);
  background:transparent; border:1px solid var(--line); border-radius:6px;
}
textarea { resize:vertical; min-height:60px; }
input:focus-visible, textarea:focus-visible, button:focus-visible, .seg input:focus-visible + span {
  outline:2px solid var(--accent); outline-offset:2px;
}
.hint { font-size:.78rem; color:var(--muted); margin-top:3px; }

/* Selector de forma de pago */
.seg { display:flex; gap:8px; }
.seg label { flex:1; margin:0; font-weight:500; }
.seg input { position:absolute; opacity:0; }
.seg span { display:block; text-align:center; padding:10px; border:1px solid var(--line); border-radius:6px; cursor:pointer; }
.seg input:checked + span { background:var(--accent); color:var(--on-accent); border-color:var(--accent); font-weight:600; }

/* Botones */
.btns { display:flex; flex-direction:column; gap:10px; margin-top:18px; }
button { font:inherit; cursor:pointer; border-radius:6px; padding:11px 14px; border:1px solid var(--accent); }
button:disabled { opacity:.55; cursor:wait; }
.btn-main { background:var(--accent); color:var(--on-accent); font-weight:600; }
.btn-main:hover:not(:disabled) { background:var(--accent-hover); }
.btn-alt { background:transparent; color:var(--accent); font-weight:600; }
.btn-alt:hover:not(:disabled) { background:rgba(31,58,95,.08); }
.btn-text { background:none; border:none; color:var(--muted); text-decoration:underline; padding:6px; }

/* ====== Vista previa del recibo (replica la plantilla en papel) ====== */
.preview-title { display:flex; justify-content:space-between; align-items:baseline; margin-bottom:12px; }
.preview-title h2 { margin:0; }
.sheet { background:#fff; color:#1c2530; border-radius:6px; padding:22px 20px; border:1px solid var(--line); overflow-x:auto; }
.rc-head { display:flex; gap:16px; align-items:center; margin-bottom:14px; }
.rc-logo { flex:none; width:64px; height:64px; border-radius:10px; background:#464c54; color:#fff;
           display:grid; place-items:center; font-weight:700; font-size:1.25rem; overflow:hidden; }
.rc-logo img { width:100%; height:100%; object-fit:contain; background:#fff; }
.rc-org { flex:1; text-align:center; font-size:.74rem; line-height:1.45; }
.rc-org strong { display:block; font-size:.95rem; letter-spacing:.01em; }
.rc-box { border:2px solid #1c2530; border-radius:22px; padding:16px 20px 12px; min-width:470px; }
.rc-row { display:flex; align-items:flex-end; gap:8px; margin-bottom:10px; font-size:.78rem; font-weight:700; }
.rc-row .v { flex:1; min-height:24px; border-bottom:1px solid #1c2530; font-weight:500; font-size:.98rem;
             padding:0 6px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.rc-row .v.wrap2 { white-space:normal; }
.rc-row .fixed { flex:none; }
.rc-chk { display:inline-grid; place-items:center; width:18px; height:18px; border:2px solid #1c2530; font-size:.8rem; vertical-align:middle; margin-left:4px; }
.rc-sign { display:flex; gap:28px; margin-top:20px; font-size:.68rem; font-weight:700; text-align:center; }
.rc-sign > div { flex:1; }
.rc-sign .line { border-bottom:1px solid #1c2530; min-height:30px; font-weight:500; font-size:.95rem; display:flex; align-items:flex-end; justify-content:center; padding-bottom:2px; }

/* ====== Historial ====== */
.history { margin-top:22px; }
.tbl-wrap { overflow-x:auto; }
table { width:100%; border-collapse:collapse; font-size:.9rem; }
th, td { text-align:left; padding:10px 8px; border-bottom:1px solid var(--line); vertical-align:middle; }
th { font-size:.8rem; color:var(--muted); font-weight:600; }
td.num, th.num { text-align:right; white-space:nowrap; }
td.acts { white-space:nowrap; text-align:right; }
td.acts button { padding:5px 9px; font-size:.82rem; margin-left:4px; background:transparent; color:var(--accent); }
td.acts button.del { color:var(--danger); border-color:var(--danger); }
.empty { color:var(--muted); padding:18px 4px; }
.totals { display:flex; justify-content:space-between; margin-top:10px; font-size:.85rem; color:var(--muted); }

/* ====== Acceso con contraseña ====== */
.login { position:fixed; inset:0; display:grid; place-items:center; background:var(--bg); padding:18px; z-index:20; }
.login-card { width:100%; max-width:340px; background:var(--panel); border:1px solid var(--line); border-radius:10px; padding:24px; display:flex; flex-direction:column; gap:12px; }
.login-card h2 { margin:0; }
.login-err { color:var(--danger); font-size:.85rem; min-height:1.2em; }

/* Aviso emergente */
#toast { position:fixed; left:50%; bottom:24px; transform:translateX(-50%) translateY(20px); opacity:0;
         background:var(--ink); color:var(--bg); padding:11px 18px; border-radius:8px; font-size:.9rem;
         transition:opacity .2s, transform .2s; pointer-events:none; z-index:30; max-width:90vw; }
#toast.show { opacity:1; transform:translateX(-50%) translateY(0); }
#toast.err { background:var(--danger); color:#fff; }
@media (prefers-reduced-motion: reduce){ #toast { transition:none; } }