:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel2: #273549;
  --borde: #334155;
  --texto: #e2e8f0;
  --texto2: #94a3b8;
  --acento: #38bdf8;
  --acento2: #0ea5e9;
  --peligro: #f87171;
  --ok: #4ade80;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--texto);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  padding-bottom: calc(64px + env(safe-area-inset-bottom));
}
.cargando { text-align: center; padding: 40vh 0; color: var(--texto2); }

/* ---- Cabecera ---- */
header.top {
  position: sticky; top: 0; z-index: 10;
  background: var(--bg);
  padding: 12px 16px 8px;
  display: flex; align-items: center; gap: 10px;
  border-bottom: 1px solid var(--borde);
}
header.top h1 { font-size: 1.15rem; margin: 0; flex: 1; }
header.top .logo { font-size: 1.3rem; }
header.top button { background: none; border: none; color: var(--texto2); font-size: 1.1rem; padding: 6px; cursor: pointer; }

main { padding: 12px 14px; max-width: 720px; margin: 0 auto; }

/* ---- Navegación inferior ---- */
nav.tabs {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 10;
  display: flex;
  background: var(--panel);
  border-top: 1px solid var(--borde);
  padding-bottom: env(safe-area-inset-bottom);
}
nav.tabs button {
  flex: 1; background: none; border: none; color: var(--texto2);
  padding: 10px 0 8px; font-size: 0.72rem; cursor: pointer;
}
nav.tabs button .ico { display: block; font-size: 1.35rem; margin-bottom: 2px; }
nav.tabs button.activa { color: var(--acento); }

/* ---- Formularios ---- */
label.campo { display: block; margin-bottom: 12px; font-size: 0.82rem; color: var(--texto2); }
label.campo > span { display: block; margin-bottom: 4px; }
input, select, textarea {
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--borde);
  border-radius: 10px;
  color: var(--texto);
  padding: 12px;
  font-size: 1rem;
  font-family: inherit;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--acento2); border-color: transparent; }
.fila2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

.btn {
  display: block; width: 100%;
  background: var(--acento2); color: #fff;
  border: none; border-radius: 12px;
  padding: 14px; font-size: 1.05rem; font-weight: 600;
  cursor: pointer; margin-top: 6px;
}
.btn:disabled { opacity: 0.5; }
.btn.secundario { background: var(--panel2); color: var(--texto); }
.btn.peligro { background: transparent; color: var(--peligro); border: 1px solid var(--peligro); }

/* ---- Selector de fichero ---- */
.zona-fichero {
  border: 2px dashed var(--borde);
  border-radius: 14px;
  padding: 22px 12px;
  text-align: center;
  color: var(--texto2);
  cursor: pointer;
  margin-bottom: 14px;
}
.zona-fichero.con-fichero { border-style: solid; border-color: var(--acento2); padding: 10px; }
.zona-fichero img { max-width: 100%; max-height: 220px; border-radius: 8px; }
.zona-fichero .ico-grande { font-size: 2.2rem; display: block; margin-bottom: 6px; }

/* ---- Lista ---- */
.filtros { display: flex; gap: 8px; margin-bottom: 12px; flex-wrap: wrap; }
.filtros select, .filtros input { width: auto; flex: 1; min-width: 90px; padding: 9px 10px; font-size: 0.9rem; }
h2.mes { font-size: 0.85rem; color: var(--texto2); text-transform: uppercase; letter-spacing: 0.06em; margin: 18px 0 8px; }
.doc {
  display: flex; align-items: center; gap: 12px;
  background: var(--panel);
  border: 1px solid var(--borde);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 8px;
  cursor: pointer;
}
.doc .tipo-ico { font-size: 1.5rem; }
.doc .cuerpo { flex: 1; min-width: 0; }
.doc .titulo { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.doc .sub { font-size: 0.8rem; color: var(--texto2); }
.doc .importe { font-weight: 600; white-space: nowrap; }
.vacio { text-align: center; color: var(--texto2); padding: 40px 20px; }

/* ---- Resumen ---- */
.tarjeta {
  background: var(--panel); border: 1px solid var(--borde);
  border-radius: 14px; padding: 16px; margin-bottom: 12px;
}
.tarjeta h3 { margin: 0 0 10px; font-size: 0.85rem; color: var(--texto2); text-transform: uppercase; letter-spacing: 0.05em; }
.numerazo { font-size: 2.6rem; font-weight: 700; color: var(--acento); line-height: 1; }
.numerazo small { font-size: 1rem; color: var(--texto2); font-weight: 400; }
.barra-fila { display: flex; align-items: center; gap: 8px; margin-bottom: 7px; font-size: 0.9rem; }
.barra-fila .eti { width: 130px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.barra-fila .pista { flex: 1; background: var(--panel2); border-radius: 4px; height: 14px; overflow: hidden; }
.barra-fila .rel { background: var(--acento2); height: 100%; border-radius: 4px; }
.barra-fila .val { width: 30px; text-align: right; color: var(--texto2); }
.meses-grid { display: flex; align-items: flex-end; gap: 4px; height: 90px; }
.meses-grid .mes-col { flex: 1; display: flex; flex-direction: column; justify-content: flex-end; align-items: center; height: 100%; }
.meses-grid .mes-barra { width: 100%; background: var(--acento2); border-radius: 3px 3px 0 0; min-height: 2px; }
.meses-grid .mes-eti { font-size: 0.6rem; color: var(--texto2); margin-top: 4px; }

/* ---- Modal detalle ---- */
.modal-fondo {
  position: fixed; inset: 0; z-index: 20;
  background: rgba(0,0,0,0.6);
  display: flex; align-items: flex-end; justify-content: center;
}
.modal {
  background: var(--bg);
  border-radius: 16px 16px 0 0;
  width: 100%; max-width: 720px;
  max-height: 92vh; overflow-y: auto;
  padding: 16px 16px 24px;
}
.modal .cerrar { float: right; background: none; border: none; color: var(--texto2); font-size: 1.6rem; cursor: pointer; padding: 0 4px; }
.modal img.previa { max-width: 100%; max-height: 300px; border-radius: 10px; display: block; margin: 0 auto 14px; }
.modal .abrir-pdf { display: block; text-align: center; margin-bottom: 14px; color: var(--acento); }

/* ---- Login ---- */
.login { max-width: 380px; margin: 14vh auto 0; padding: 0 20px; text-align: center; }
.login .logo { font-size: 3.2rem; }
.login h1 { font-size: 1.4rem; }
.login p { color: var(--texto2); font-size: 0.9rem; }
.login form { text-align: left; margin-top: 18px; }

/* ---- Toast ---- */
.toast {
  position: fixed; bottom: 80px; left: 50%; transform: translateX(-50%);
  background: var(--panel2); color: var(--texto);
  border: 1px solid var(--borde);
  padding: 10px 18px; border-radius: 24px;
  z-index: 30; font-size: 0.9rem;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
}
.toast.error { border-color: var(--peligro); color: var(--peligro); }

.error-msg { color: var(--peligro); font-size: 0.85rem; margin-top: 8px; min-height: 1em; }