:root {
  --bg: #0a0a12;
  --bg2: #0f0d1a;
  --card: #14121f;
  --card2: #1a1729;
  --line: rgba(255,255,255,.09);
  --txt: #f3f0ff;
  --muted: #a99fc4;
  --violet: #8b5cf6;
  --pink: #e879f9;
  --green: #22c55e;
  --amber: #f59e0b;
  --red: #ef4444;
  --blue: #3b82f6;
  --radius: 16px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
  background:
    radial-gradient(900px 600px at 90% -10%, rgba(139,92,246,.22), transparent 60%),
    radial-gradient(700px 500px at 0% 10%, rgba(232,121,249,.14), transparent 60%),
    var(--bg);
  color: var(--txt);
}
.hidden { display: none !important; }
.muted { color: var(--muted); }
h1 { font-size: 24px; }
h2 { font-size: 18px; }
a { color: var(--pink); text-decoration: none; }
input, select, textarea {
  width: 100%; padding: 10px 12px; border-radius: 10px;
  border: 1px solid var(--line); background: #0c0a15; color: var(--txt);
  font-size: 14px; outline: none;
}
input:focus, select:focus, textarea:focus { border-color: var(--violet); }
label { display: block; font-size: 11px; font-weight: 700; letter-spacing: .3px; color: var(--muted); margin-bottom: 5px; text-transform: uppercase; }
.grow { flex: 1; }
.err { color: #fca5a5; font-size: 12.5px; margin-top: 8px; min-height: 16px; }
.ok { color: #86efac; font-size: 12.5px; }

/* login */
.login { min-height: 100%; display: grid; place-items: center; padding: 20px; }
.login-card { width: 100%; max-width: 360px; background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 30px 26px; text-align: center; box-shadow: 0 30px 80px rgba(0,0,0,.5); }
.login-card h1 { margin-top: 14px; letter-spacing: 2px; }
.login-card form { margin-top: 22px; text-align: left; }
.login-card label { margin-top: 10px; }
.login-card .btn { margin-top: 14px; }
.logo { width: 64px; height: 64px; border-radius: 18px; margin: 0 auto; display: grid; place-items: center; font-weight: 900; font-size: 30px; background: linear-gradient(145deg, var(--pink), var(--violet)); box-shadow: 0 12px 34px rgba(139,92,246,.4); }
.logo.sm { width: 42px; height: 42px; font-size: 20px; border-radius: 12px; margin: 0; }

/* layout */
.app { display: flex; min-height: 100%; }
.side { width: 230px; flex: 0 0 230px; background: linear-gradient(180deg, #0c0a15, #0a0812); border-right: 1px solid var(--line); padding: 18px 14px; display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh; }
.brand { display: flex; align-items: center; gap: 10px; padding: 4px 6px 18px; border-bottom: 1px solid var(--line); margin-bottom: 14px; }
.bname { font-weight: 900; letter-spacing: 1.5px; font-size: 14px; }
.bsub { font-size: 10px; color: var(--muted); letter-spacing: .8px; text-transform: uppercase; margin-top: 2px; }
#nav { display: flex; flex-direction: column; gap: 4px; }
#nav button { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 10px; border: 0; background: transparent; color: var(--muted); font-size: 13.5px; font-weight: 600; cursor: pointer; text-align: left; }
#nav button span { width: 18px; text-align: center; }
#nav button:hover { background: rgba(255,255,255,.04); color: var(--txt); }
#nav button.active { background: linear-gradient(90deg, rgba(139,92,246,.25), rgba(232,121,249,.12)); color: #fff; box-shadow: inset 0 0 0 1px rgba(139,92,246,.4); }
.side-foot { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); }
.side-user { font-size: 12px; color: var(--muted); margin-bottom: 8px; }
.main { flex: 1; min-width: 0; padding: 24px 28px 60px; }
.topbar { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; margin-bottom: 22px; flex-wrap: wrap; }
.top-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 7px; border: 1px solid var(--line); background: var(--card2); color: var(--txt); padding: 9px 14px; border-radius: 10px; font-size: 13px; font-weight: 700; cursor: pointer; }
.btn:hover { border-color: rgba(255,255,255,.22); }
.btn.primary { background: linear-gradient(135deg, var(--violet), var(--pink)); border: 0; color: #fff; }
.btn.green { background: #15803d; border-color: #166534; color: #fff; }
.btn.red { background: #7f1d1d; border-color: #991b1b; color: #fecaca; }
.btn.tiny { padding: 5px 9px; font-size: 11.5px; border-radius: 8px; }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.wa { background: #128c4a; border-color: #16a34a; color: #fff; }

/* cards */
.grid { display: grid; gap: 14px; }
.cards-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.cards-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.kpi .k { font-size: 10.5px; letter-spacing: 1px; color: var(--muted); text-transform: uppercase; font-weight: 800; }
.kpi .v { font-size: 24px; font-weight: 900; margin-top: 6px; letter-spacing: -.5px; }
.kpi .s { font-size: 11px; color: var(--muted); margin-top: 4px; }
.moneda-tag { display: inline-flex; align-items: center; padding: 3px 8px; border-radius: 999px; font-size: 10.5px; font-weight: 800; letter-spacing: .5px; background: rgba(139,92,246,.15); border: 1px solid rgba(139,92,246,.4); color: #d8b4fe; margin-bottom: 10px; }
.moneda-tag.usd { background: rgba(34,197,94,.12); border-color: rgba(34,197,94,.4); color: #86efac; }
.section-title { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 22px 0 10px; }
.section-title h2 { font-size: 15px; letter-spacing: .3px; }

/* tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 11px 12px; text-align: left; border-bottom: 1px solid rgba(255,255,255,.055); white-space: nowrap; }
th { font-size: 10.5px; letter-spacing: .6px; text-transform: uppercase; color: var(--muted); background: rgba(255,255,255,.02); }
tr:last-child td { border-bottom: 0; }
tr:hover td { background: rgba(255,255,255,.02); }
td.num, th.num { text-align: right; }
.pill { display: inline-flex; align-items: center; gap: 5px; padding: 3px 8px; border-radius: 999px; font-size: 10.5px; font-weight: 800; }
.pill.activo { background: rgba(34,197,94,.13); color: #86efac; }
.pill.pagado { background: rgba(59,130,246,.15); color: #93c5fd; }
.pill.pendiente { background: rgba(245,158,11,.14); color: #fcd34d; }
.pill.parcial { background: rgba(232,121,249,.14); color: #f0abfc; }
.pill.vencida { background: rgba(239,68,68,.15); color: #fca5a5; }
.pill.cancelado { background: rgba(148,163,184,.12); color: #cbd5e1; }

/* lists */
.list { display: flex; flex-direction: column; gap: 8px; }
.row-item { display: flex; align-items: center; gap: 12px; padding: 11px 13px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; }
.row-item .r-main { flex: 1; min-width: 0; }
.row-item .r-title { font-weight: 800; font-size: 13.5px; }
.row-item .r-sub { font-size: 11.5px; color: var(--muted); margin-top: 2px; }
.row-item .r-amount { text-align: right; font-weight: 800; }
.row-item .r-amount small { display: block; color: var(--muted); font-weight: 600; font-size: 10.5px; margin-top: 2px; }
.empty { padding: 26px; text-align: center; color: var(--muted); font-size: 13px; }

/* modal */
.modal { position: fixed; inset: 0; background: rgba(4,3,10,.72); z-index: 50; display: grid; place-items: center; padding: 18px; overflow-y: auto; }
.modal-card { width: 100%; max-width: 620px; background: var(--bg2); border: 1px solid var(--line); border-radius: 18px; box-shadow: 0 40px 100px rgba(0,0,0,.6); max-height: 92vh; overflow-y: auto; }
.modal-head { display: flex; align-items: center; justify-content: space-between; padding: 18px 20px; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: var(--bg2); z-index: 2; }
.modal-head h2 { font-size: 16px; }
.modal-head .x { background: transparent; border: 0; color: var(--muted); font-size: 20px; cursor: pointer; }
.modal-body { padding: 18px 20px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 14px 20px; border-top: 1px solid var(--line); position: sticky; bottom: 0; background: var(--bg2); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid .full { grid-column: 1 / -1; }

/* detail */
.detail-head { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin-bottom: 14px; }
.detail-sum { display: flex; gap: 20px; flex-wrap: wrap; }
.detail-sum div .k { font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: .8px; font-weight: 800; }
.detail-sum div .v { font-size: 19px; font-weight: 900; margin-top: 4px; }

/* toast */
.toast { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); background: #1c1630; border: 1px solid var(--line); color: var(--txt); padding: 12px 18px; border-radius: 12px; font-size: 13px; font-weight: 600; box-shadow: 0 20px 50px rgba(0,0,0,.5); z-index: 90; }
.toast.error { border-color: #7f1d1d; }

@media (max-width: 900px) {
  .cards-4 { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .cards-3 { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .app { flex-direction: column; }
  .side { width: 100%; height: auto; position: static; flex: none; padding: 12px; }
  .brand { padding-bottom: 10px; margin-bottom: 8px; }
  #nav { flex-direction: row; overflow-x: auto; gap: 2px; }
  #nav button { white-space: nowrap; padding: 8px 10px; font-size: 12px; }
  .side-foot { display: none; }
  .main { padding: 16px 14px 50px; }
  .cards-4 { grid-template-columns: 1fr 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-grid .full { grid-column: auto; }
}