:root {
    --bg: #0f172a;
    --card: #1e293b;
    --text: #e2e8f0;
    --muted: #94a3b8;
    --accent: #38bdf8;
    --ok: #4ade80;
    --err: #f87171;
    --warn: #fbbf24;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}
.wrap { max-width: 640px; margin: 0 auto; padding: 3rem 1.25rem; }
h1 { margin: 0; font-size: 2.5rem; color: var(--accent); }
.sub { margin: .25rem 0 2rem; color: var(--muted); }
.card {
    background: var(--card);
    border: 1px solid #334155;
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
}
.card h2 { margin-top: 0; font-size: 1.1rem; }
.ok { color: var(--ok); }
.err { color: var(--err); }
code {
    background: #0b1220;
    padding: .1rem .35rem;
    border-radius: 4px;
    font-size: .9em;
}
.hint { margin-top: 2rem; color: var(--muted); font-size: .9rem; }

.wrap-ancho { max-width: 960px; }

.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { width: 100%; border-collapse: collapse; font-size: .95rem; }
th, td { text-align: left; padding: .5rem .6rem; border-bottom: 1px solid #334155; }
th { color: var(--muted); font-weight: 600; font-size: .85rem; }
td.acciones { display: flex; gap: .5rem; align-items: center; }
td.acciones form { margin: 0; }

label { display: block; margin: 1rem 0 .3rem; font-size: .9rem; color: var(--muted); }
input, select {
    width: 100%;
    padding: .55rem .7rem;
    border-radius: 8px;
    border: 1px solid #334155;
    background: #0b1220;
    color: var(--text);
    font-size: 1rem;
    font-family: inherit;
}
input:focus, select:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
input[type="checkbox"] { width: auto; margin: 0; }

.btn {
    display: inline-block;
    padding: .5rem .9rem;
    border-radius: 8px;
    background: var(--accent);
    color: #0b1220;
    text-decoration: none;
    font-weight: 600;
    font-size: .9rem;
    border: none;
    cursor: pointer;
    margin: 0 .4rem .4rem 0;
}
.btn-ghost { background: transparent; color: var(--text); border: 1px solid #334155; }
.btn-ghost.btn-activo { border-color: var(--accent); color: var(--accent); }
.btn-danger { background: var(--err); color: #1a0b0b; }

.badge {
    display: inline-block;
    padding: .15rem .55rem;
    border-radius: 999px;
    font-size: .8rem;
    font-weight: 600;
}
.badge-pendiente { background: #38bdf833; color: var(--accent); }
.badge-agrupada { background: #4ade8033; color: var(--ok); }
.badge-anulada { background: #f8717133; color: var(--err); }
.badge-aprobada, .badge-facturada, .badge-emitida, .badge-pagada { background: #4ade8033; color: var(--ok); }
.badge-rechazada { background: #f8717133; color: var(--err); }
.badge-borrador, .badge-parcial { background: #fbbf2433; color: var(--warn); }

.field-err { margin: .25rem 0 0; color: var(--err); font-size: .85rem; }

details.nueva-contraparte { margin: 1rem 0; border: 1px solid #334155; border-radius: 8px; padding: .25rem .75rem .75rem; }
details.nueva-contraparte summary { cursor: pointer; padding: .5rem 0; color: var(--accent); font-weight: 600; font-size: .9rem; }

.flash { padding: .75rem 1rem; border-radius: 8px; margin-bottom: 1.25rem; font-size: .9rem; }
.flash-ok { background: #4ade8022; color: var(--ok); border: 1px solid #4ade8055; }
.flash-err { background: #f8717122; color: var(--err); border: 1px solid #f8717155; }

.stats { display: flex; gap: 1rem; margin-bottom: 1.5rem; flex-wrap: wrap; }
.stat { background: var(--card); border: 1px solid #334155; border-radius: 12px; padding: 1rem 1.25rem; min-width: 180px; }
.stat .num { font-size: 1.6rem; font-weight: 700; color: var(--accent); }
.stat .label { font-size: .8rem; color: var(--muted); }

.num-right { text-align: right; }

a.stat { display: block; text-decoration: none; color: inherit; transition: border-color .15s; }
a.stat:hover { border-color: var(--accent); }

.nav { background: var(--card); border-bottom: 1px solid #334155; }
.nav-wrap { max-width: 960px; margin: 0 auto; padding: .85rem 1.25rem; display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.nav-brand { font-weight: 700; font-size: 1.1rem; color: var(--accent); text-decoration: none; margin-right: auto; }
.nav-links { display: flex; gap: .25rem; flex-wrap: wrap; }
.nav-link { padding: .4rem .7rem; border-radius: 8px; color: var(--text); text-decoration: none; font-size: .9rem; font-weight: 600; }
.nav-link:hover { background: #33415588; }
.nav-link-activo { background: var(--accent); color: #0b1220; }
.nav-link-sec { color: var(--muted); font-weight: 500; }
.nav-link-sec.nav-link-activo { background: #334155; color: var(--text); }
.nav-links-sec { padding-left: .75rem; border-left: 1px solid #334155; }

.nav-link-con-hint { position: relative; }
.flotante-ayuda {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: .6rem;
    max-width: 180px;
    white-space: normal;
    background: var(--accent);
    color: #0b1220;
    padding: .5rem .75rem;
    border-radius: 8px;
    font-size: .8rem;
    font-weight: 600;
    line-height: 1.3;
    box-shadow: 0 4px 12px rgba(0,0,0,.35);
    animation: flotar 1.6s ease-in-out infinite;
    z-index: 5;
}
.flotante-ayuda::before {
    content: '';
    position: absolute;
    bottom: 100%;
    right: 1rem;
    border: 6px solid transparent;
    border-bottom-color: var(--accent);
}
@keyframes flotar {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}