:root {
  --fondo: #f2f4f7;
  --superficie: #ffffff;
  --superficie-2: #f8f9fb;
  --texto: #12161c;
  --texto-suave: #5b6472;
  --borde: #e1e5eb;
  --acento: #3a6fc2;
  --acento-suave: #dbe6f7;
  --pos: #1a8a4c;
  --neg: #c23b3b;
  --sombra: 0 1px 2px rgba(20, 24, 32, 0.04), 0 4px 14px rgba(20, 24, 32, 0.05);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --fondo: #0d1219;
    --superficie: #161d2c;
    --superficie-2: #131a27;
    --texto: #eef1f6;
    --texto-suave: #97a3b8;
    --borde: #262f42;
    --acento: #6fa3e8;
    --acento-suave: #1c2b42;
    --pos: #35c37c;
    --neg: #e0645f;
    --sombra: 0 1px 2px rgba(0, 0, 0, 0.3), 0 6px 18px rgba(0, 0, 0, 0.25);
  }
}
:root[data-theme="dark"] {
  --fondo: #0d1219;
  --superficie: #161d2c;
  --superficie-2: #131a27;
  --texto: #eef1f6;
  --texto-suave: #97a3b8;
  --borde: #262f42;
  --acento: #6fa3e8;
  --acento-suave: #1c2b42;
  --pos: #35c37c;
  --neg: #e0645f;
  --sombra: 0 1px 2px rgba(0, 0, 0, 0.3), 0 6px 18px rgba(0, 0, 0, 0.25);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--fondo);
  color: var(--texto);
  font-family: ui-sans-serif, system-ui, "Segoe UI", sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--acento); }

/* --- Login --- */
.login { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 20px; }
.tarjeta-login {
  background: var(--superficie); border: 1px solid var(--borde); border-radius: 14px;
  box-shadow: var(--sombra);
  padding: 32px; width: 100%; max-width: 320px; display: flex; flex-direction: column; gap: 14px;
}
.tarjeta-login h1 { font-size: 1.2rem; margin: 0 0 6px; }
.tarjeta-login label { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: var(--texto-suave); }
.tarjeta-login input {
  padding: 10px; border-radius: 8px; border: 1px solid var(--borde);
  background: var(--fondo); color: var(--texto); font-size: 1rem;
}
.tarjeta-login button {
  padding: 10px; border-radius: 8px; border: none; background: var(--acento);
  color: white; font-size: 1rem; cursor: pointer; font-weight: 600;
}

/* --- Layout general --- */
.panel { max-width: 920px; margin: 0 auto; padding: 20px 20px 60px; display: flex; flex-direction: column; gap: 16px; }
.cabecera {
  display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  position: sticky; top: 0; background: var(--fondo); padding: 12px 0; z-index: 5;
  border-bottom: 1px solid var(--borde); margin-bottom: 4px;
}
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a {
  color: var(--texto-suave); text-decoration: none; font-size: 0.88rem; font-weight: 500;
  padding: 7px 12px; border-radius: 8px; transition: background 0.15s, color 0.15s;
}
.nav a:hover { color: var(--texto); background: var(--superficie-2); }
.nav-derecha { display: flex; align-items: center; gap: 10px; }
.icono {
  border: 1px solid var(--borde); background: var(--superficie); border-radius: 8px;
  font-size: 1rem; padding: 6px 10px; cursor: pointer; line-height: 1;
}
.icono:hover { background: var(--superficie-2); }
.enlace {
  border: 1px solid var(--borde); background: var(--superficie); color: var(--texto-suave);
  border-radius: 8px; padding: 7px 14px; font-size: 0.85rem; font-weight: 500; cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.enlace:hover { background: var(--superficie-2); color: var(--texto); }

h1 { font-size: 1.5rem; margin: 4px 0; }
.tarjeta {
  background: var(--superficie); border: 1px solid var(--borde); border-radius: 14px;
  padding: 20px; box-shadow: var(--sombra);
}
.tarjeta.apagada { opacity: 0.5; }
.tarjeta h2 { margin: 0 0 10px; font-size: 1.05rem; }
.mini-titulo { font-size: 0.85rem; color: var(--texto-suave); margin: 16px 0 8px; text-transform: uppercase; letter-spacing: 0.03em; }

.dato { font-size: 0.95rem; margin: 6px 0; }
.dato.pos { color: var(--pos); }
.dato.neg { color: var(--neg); }
.cifra { font-size: 1.9rem; font-weight: 700; margin: 6px 0; letter-spacing: -0.01em; }
.cifra.pos { color: var(--pos); }
.cifra.neg { color: var(--neg); }
.mini { font-size: 0.8rem; color: var(--texto-suave); }
td.pos, .pos { color: var(--pos); }
td.neg, .neg { color: var(--neg); }

.avisos { max-width: 920px; margin: 12px auto 0; padding: 0 20px; }
.aviso { background: #fbe4e2; color: #7a2420; padding: 10px 14px; border-radius: 10px; font-size: 0.9rem; }

/* --- Tablas --- */
.tabla-scroll { overflow-x: auto; margin: 0 -4px; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--borde); }
th { color: var(--texto-suave); font-weight: 500; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.02em; }
tr:last-child td { border-bottom: none; }
td.n, th.n { text-align: right; font-variant-numeric: tabular-nums; }
td.c, th.c { text-align: center; }
tr.ahorro td, tr.destacada td { background: var(--acento-suave); }
tr.vencida td { background: color-mix(in srgb, var(--neg) 10%, transparent); }

/* --- Formularios --- */
.fila-editable { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.form-linea { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; align-items: center; }
.form-columna { display: flex; flex-direction: column; gap: 10px; max-width: 380px; margin-top: 10px; }
.form-linea input, .form-linea select, .form-columna input, .form-columna select {
  padding: 8px 10px; border-radius: 8px; border: 1px solid var(--borde);
  background: var(--superficie-2); color: var(--texto); font-size: 0.9rem;
}
.form-linea input, .form-linea select { max-width: 160px; }
.form-linea label, .form-columna label { font-size: 0.85rem; color: var(--texto-suave); display: flex; align-items: center; gap: 6px; }
.form-linea button, .form-columna button {
  padding: 8px 16px; border-radius: 8px; border: none; background: var(--acento);
  color: white; font-size: 0.88rem; cursor: pointer; font-weight: 600; transition: filter 0.15s;
}
.form-linea button:hover, .form-columna button:hover { filter: brightness(1.08); }
.form-linea button.secundario, .form-columna button.secundario {
  background: transparent; border: 1px solid var(--borde); color: var(--texto-suave); font-weight: 500;
}
.form-linea button.peligro { background: var(--neg); }

.barra { height: 8px; border-radius: 4px; background: var(--superficie-2); overflow: hidden; margin: 10px 0; border: 1px solid var(--borde); }
.barra i { display: block; height: 100%; background: var(--acento); }

/* --- Listas de tareas agrupadas --- */
details.grupo { border: 1px solid var(--borde); border-radius: 10px; margin-bottom: 10px; overflow: hidden; }
details.grupo summary {
  padding: 10px 14px; cursor: pointer; font-weight: 600; background: var(--superficie-2);
  display: flex; justify-content: space-between; list-style: none;
}
details.grupo summary::-webkit-details-marker { display: none; }
details.grupo summary .n-badge { color: var(--texto-suave); font-weight: 500; font-size: 0.85rem; }
.fila-tarea {
  display: flex; align-items: center; gap: 10px; padding: 8px 14px; border-top: 1px solid var(--borde);
  flex-wrap: wrap;
}
.fila-tarea .que { flex: 1; min-width: 160px; }
.fila-tarea form { display: inline-flex; gap: 6px; }
.chip {
  font-size: 0.72rem; padding: 2px 7px; border-radius: 999px; background: var(--acento-suave);
  color: var(--acento); font-weight: 600;
}
.chip.alta { background: color-mix(in srgb, var(--neg) 15%, transparent); color: var(--neg); }