:root[data-tema="oscuro"] {
    --fondo: #0d1117;
    --panel: #161c26;
    --panel-borde: #242c3a;
    --texto: #e8ebee;
    --texto-suave: #9aa4b2;
    --turquesa: #26D0CE;
    --azul: #1A2980;
}

:root[data-tema="claro"] {
    --fondo: #f2f4f8;
    --panel: #ffffff;
    --panel-borde: #d8dee8;
    --texto: #1c2430;
    --texto-suave: #5a6472;
    --turquesa: #0e8f8d;
    --azul: #1A2980;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box
}

body {
    background: var(--fondo);
    color: var(--texto);
    font-family: 'Segoe UI',Arial,sans-serif;
    line-height: 1.55
}

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

.lateral {
    width: 230px;
    background: var(--panel);
    border-right: 1px solid var(--panel-borde);
    padding: 22px 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: sticky;
    top: 0;
    height: 100vh
}

    .lateral .logo {
        height: 44px;
        margin-bottom: 18px
    }

    .lateral nav {
        display: flex;
        flex-direction: column;
        gap: 4px;
        flex-grow: 1
    }

        .lateral nav a {
            color: var(--texto-suave);
            text-decoration: none;
            padding: 10px 14px;
            border-radius: 8px;
            font-size: .95rem
        }

            .lateral nav a:hover {
                background: rgba(38,208,206,.1);
                color: var(--turquesa)
            }

.pie-lateral {
    display: flex;
    align-items: center;
    gap: 8px;
    border-top: 1px solid var(--panel-borde);
    padding-top: 14px;
    font-size: .85rem
}

.btn-tema {
    background: none;
    border: 1px solid var(--panel-borde);
    border-radius: 6px;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 1rem;
    color: var(--texto)
}

.salir {
    color: #e74c3c;
    text-decoration: none;
    font-size: .85rem
}

.contenido {
    flex-grow: 1;
    padding: 34px 40px
}

.kpis {
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(180px,1fr));
    gap: 16px;
    margin-bottom: 34px
}

.kpi {
    background: var(--panel);
    border: 1px solid var(--panel-borde);
    border-radius: 12px;
    padding: 22px
}

    .kpi .valor {
        font-size: 2rem;
        font-weight: 800;
        color: var(--turquesa)
    }

    .kpi .titulo {
        color: var(--texto-suave);
        font-size: .85rem
    }

.tarjeta {
    background: var(--panel);
    border: 1px solid var(--panel-borde);
    border-radius: 12px;
    padding: 26px;
    margin-bottom: 22px
}

    .tarjeta h2 {
        font-size: 1.15rem;
        margin-bottom: 16px
    }

table {
    width: 100%;
    border-collapse: collapse;
    font-size: .9rem
}

th {
    background: var(--panel);
    text-align: left;
    padding: 10px;
    color: var(--texto);
    border-bottom: 2px solid var(--turquesa)
}

td {
    padding: 10px;
    border-bottom: 1px solid var(--panel-borde);
    color: var(--texto-suave)
}

input, select {
    padding: 9px 12px;
    border-radius: 8px;
    border: 1px solid var(--panel-borde);
    background: var(--fondo);
    color: var(--texto);
    font-size: .95rem
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    background: linear-gradient(90deg,var(--azul),var(--turquesa));
    color: #fff;
    font-weight: 600;
    cursor: pointer
}