:root {
    --color-primario: #4338CA;
    --color-primario-suave: #EEF2FF;
    --gris-950: #0f172a;
    --gris-800: #1e293b;
    --gris-600: #475569;
    --gris-400: #94a3b8;
    --gris-200: #e2e8f0;
    --gris-100: #f1f5f9;
    --gris-50: #f8fafc;
    --verde: #16a34a;
    --verde-suave: #dcfce7;
    --rojo: #dc2626;
    --rojo-suave: #fee2e2;
    --ambar: #d97706;
    --ambar-suave: #fef3c7;
    --azul: #2563eb;
    --azul-suave: #dbeafe;
    --radio: 12px;
    --sombra: 0 1px 2px rgba(15,23,42,.06), 0 1px 8px rgba(15,23,42,.04);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--gris-50);
    color: var(--gris-950);
    font-size: 14.5px;
    line-height: 1.5;
}

a { color: var(--color-primario); text-decoration: none; }
a:hover { text-decoration: underline; }

.app-shell { display: flex; min-height: 100vh; }

/* ---------- Sidebar ---------- */
.sidebar {
    width: 240px;
    background: #fff;
    border-right: 1px solid var(--gris-200);
    display: flex;
    flex-direction: column;
    padding: 1.25rem 1rem;
    flex-shrink: 0;
}
.sidebar-logo { display: flex; align-items: center; gap: .6rem; padding: 0 .4rem 1.25rem; border-bottom: 1px solid var(--gris-100); margin-bottom: 1rem; }
.sidebar-logo img { max-height: 36px; max-width: 100%; object-fit: contain; }
.sidebar-logo span { font-weight: 700; font-size: 1rem; color: var(--gris-950); }
.nav-group { margin-bottom: 1.25rem; }
.nav-group-label { font-size: .7rem; text-transform: uppercase; letter-spacing: .05em; color: var(--gris-400); padding: 0 .6rem; margin-bottom: .4rem; font-weight: 600; }
.nav-link {
    display: flex; align-items: center; gap: .65rem;
    padding: .55rem .6rem; border-radius: 8px; color: var(--gris-600);
    font-size: .875rem; font-weight: 500; margin-bottom: .15rem;
}
.nav-link:hover { background: var(--gris-100); text-decoration: none; color: var(--gris-950); }
.nav-link.active { background: var(--color-primario-suave); color: var(--color-primario); }
.nav-link svg { flex-shrink: 0; }
.sidebar-footer { margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--gris-100); }
.user-chip { display: flex; align-items: center; gap: .6rem; padding: .4rem .6rem; }
.user-avatar { width: 30px; height: 30px; border-radius: 50%; background: var(--color-primario-suave); color: var(--color-primario); display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .8rem; flex-shrink: 0; }
.user-meta { line-height: 1.2; }
.user-meta strong { font-size: .82rem; display: block; }
.user-meta span { font-size: .72rem; color: var(--gris-400); }

/* ---------- Main ---------- */
.main { flex: 1; min-width: 0; }
.topbar { background: #fff; border-bottom: 1px solid var(--gris-200); padding: 1rem 1.75rem; display: flex; align-items: center; justify-content: space-between; }
.topbar h1 { font-size: 1.1rem; margin: 0; }
.content { padding: 1.75rem; max-width: 1280px; }

/* ---------- Cards ---------- */
.card { background: #fff; border: 1px solid var(--gris-200); border-radius: var(--radio); box-shadow: var(--sombra); padding: 1.25rem; }
.card + .card { margin-top: 1rem; }
.card-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
.card-header h2 { font-size: .95rem; margin: 0; font-weight: 700; }

.grid { display: grid; gap: 1rem; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 900px) { .grid-4, .grid-3 { grid-template-columns: repeat(2, 1fr); } }

.stat-card { padding: 1rem 1.1rem; }
.stat-card .valor { font-size: 1.7rem; font-weight: 700; }
.stat-card .etiqueta { font-size: .78rem; color: var(--gris-400); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.stat-card.acento-verde .valor { color: var(--verde); }
.stat-card.acento-rojo .valor { color: var(--rojo); }
.stat-card.acento-ambar .valor { color: var(--ambar); }
.stat-card.acento-primario .valor { color: var(--color-primario); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; gap: .45rem;
    padding: .55rem 1rem; border-radius: 9px; font-size: .85rem; font-weight: 600;
    border: 1px solid transparent; cursor: pointer; text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primario { background: var(--color-primario); color: #fff; }
.btn-primario:hover { filter: brightness(1.08); }
.btn-secundario { background: #fff; border-color: var(--gris-200); color: var(--gris-800); }
.btn-secundario:hover { background: var(--gris-50); }
.btn-peligro { background: var(--rojo-suave); color: var(--rojo); }
.btn-exito { background: var(--verde-suave); color: var(--verde); }
.btn-sm { padding: .35rem .7rem; font-size: .78rem; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Forms ---------- */
.form-grupo { margin-bottom: 1rem; }
.form-grupo label { display: block; font-size: .8rem; font-weight: 600; color: var(--gris-800); margin-bottom: .3rem; }
.form-grupo .ayuda { font-size: .72rem; color: var(--gris-400); margin-top: .25rem; }
input[type=text], input[type=email], input[type=password], input[type=date], input[type=number], input[type=file], select, textarea {
    width: 100%; padding: .55rem .7rem; border: 1px solid var(--gris-200); border-radius: 8px;
    font-size: .875rem; font-family: inherit; background: #fff; color: var(--gris-950);
}
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--color-primario); box-shadow: 0 0 0 3px var(--color-primario-suave); }
textarea { resize: vertical; min-height: 80px; }

/* ---------- Tables ---------- */
table { width: 100%; border-collapse: collapse; font-size: .85rem; }
th { text-align: left; font-size: .72rem; text-transform: uppercase; letter-spacing: .03em; color: var(--gris-400); font-weight: 700; padding: .6rem .7rem; border-bottom: 1px solid var(--gris-200); }
td { padding: .65rem .7rem; border-bottom: 1px solid var(--gris-100); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
.tabla-wrap { overflow-x: auto; }

/* ---------- Badges ---------- */
.badge { display: inline-flex; align-items: center; gap: .3rem; padding: .2rem .55rem; border-radius: 999px; font-size: .72rem; font-weight: 700; white-space: nowrap; }
.badge-gray { background: var(--gris-100); color: var(--gris-600); }
.badge-blue { background: var(--azul-suave); color: var(--azul); }
.badge-green { background: var(--verde-suave); color: var(--verde); }
.badge-red { background: var(--rojo-suave); color: var(--rojo); }
.badge-amber { background: var(--ambar-suave); color: var(--ambar); }

/* ---------- Tabs ---------- */
.tabs { display: flex; gap: .4rem; border-bottom: 1px solid var(--gris-200); margin-bottom: 1.25rem; }
.tab { padding: .6rem 1rem; font-size: .85rem; font-weight: 600; color: var(--gris-400); border-bottom: 2px solid transparent; }
.tab.active { color: var(--color-primario); border-color: var(--color-primario); }
.tab .conteo { background: var(--gris-100); border-radius: 999px; padding: .05rem .45rem; font-size: .72rem; margin-left: .3rem; }
.tab.active .conteo { background: var(--color-primario-suave); color: var(--color-primario); }

/* ---------- Alerts / flash ---------- */
.alerta { padding: .75rem 1rem; border-radius: 10px; font-size: .85rem; margin-bottom: 1rem; display: flex; align-items: center; gap: .5rem; }
.alerta-error { background: var(--rojo-suave); color: var(--rojo); }
.alerta-exito { background: var(--verde-suave); color: var(--verde); }

/* ---------- Comparación campo a campo ---------- */
.comparacion-row { display: grid; grid-template-columns: 140px 1fr 1fr 110px; gap: .75rem; padding: .6rem 0; border-bottom: 1px solid var(--gris-100); align-items: center; font-size: .85rem; }
.comparacion-row .campo-nombre { font-weight: 700; color: var(--gris-600); text-transform: capitalize; }
.comparacion-row .valor { font-family: ui-monospace, SFMono-Regular, monospace; font-size: .8rem; }

/* ---------- Auth (login) ---------- */
.auth-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--gris-50); padding: 1rem; }
.auth-card { background: #fff; border: 1px solid var(--gris-200); border-radius: var(--radio); box-shadow: var(--sombra); padding: 2rem; width: 100%; max-width: 380px; }
.auth-logo { text-align: center; margin-bottom: 1.5rem; }
.auth-logo img { max-height: 48px; max-width: 100%; }
.auth-logo h1 { font-size: 1.15rem; margin: .5rem 0 0; }

/* ---------- Empty state ---------- */
.vacio { text-align: center; padding: 3rem 1rem; color: var(--gris-400); }
.vacio svg { margin-bottom: .75rem; opacity: .6; }

.texto-muted { color: var(--gris-400); }
.mono { font-family: ui-monospace, SFMono-Regular, monospace; }
.flex { display: flex; align-items: center; }
.gap-2 { gap: .5rem; }
.gap-3 { gap: .75rem; }
.justify-between { justify-content: space-between; }
.mt-3 { margin-top: .75rem; }
.mb-0 { margin-bottom: 0; }

/* ---------- Móvil / tablet ---------- */
/* Todos los inputs a 16px mínimo: evita que iOS haga zoom automático al enfocar un campo */
input, select, textarea, button { font-size: max(16px, 0.875rem); }

.topbar-movil {
    display: none;
    align-items: center;
    justify-content: space-between;
    background: #fff;
    border-bottom: 1px solid var(--gris-200);
    padding: .75rem 1rem;
    position: sticky;
    top: 0;
    z-index: 40;
}
.btn-menu-movil {
    background: none; border: none; padding: .4rem; cursor: pointer;
    color: var(--gris-800); display: flex; align-items: center;
}
.overlay-sidebar {
    display: none;
    position: fixed; inset: 0; background: rgba(15,23,42,.45); z-index: 55;
}

@media (max-width: 860px) {
    .sidebar .btn-menu-movil { display: flex !important; justify-content: flex-end; margin-bottom: .5rem; }

    .app-shell { flex-direction: column; }
    .topbar-movil { display: flex; }

    .sidebar {
        position: fixed; top: 0; left: 0; bottom: 0; z-index: 60;
        width: 78vw; max-width: 300px;
        transform: translateX(-100%);
        transition: transform .2s ease;
        box-shadow: 2px 0 16px rgba(0,0,0,.15);
    }
    .sidebar.abierto { transform: translateX(0); }
    .overlay-sidebar.abierto { display: block; }

    .content { padding: 1.1rem; }
    .topbar { flex-wrap: wrap; gap: .6rem; padding: .85rem 1.1rem; margin-left: -1.1rem !important; margin-right: -1.1rem !important; }
    .topbar h1 { font-size: 1rem; }

    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr 1fr; }
    .stat-card .valor { font-size: 1.4rem; }

    table { font-size: .78rem; }
    th, td { padding: .5rem .5rem; }

    .comparacion-row { grid-template-columns: 90px 1fr 1fr 80px; font-size: .78rem; }

    .btn { padding: .6rem 1rem; } /* mantiene objetivo táctil >=40px alto */
}

@media (max-width: 520px) {
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
    .auth-card { padding: 1.5rem; }
    .card { padding: 1rem; }
}