:root {
    color-scheme: light dark;
    --color-fondo: #f5f5f7;
    --color-texto: #1c1c1e;
    --color-borde: #d0d0d5;
    --color-primario: #2f6fed;
    --color-ok-fondo: #e3f7e8;
    --color-ok-texto: #1b7a34;
    --color-error-fondo: #fbe4e4;
    --color-error-texto: #a3242b;
}

@media (prefers-color-scheme: dark) {
    :root {
        --color-fondo: #17181a;
        --color-texto: #e9e9ec;
        --color-borde: #3a3b3e;
        --color-ok-fondo: #133821;
        --color-ok-texto: #6fe39a;
        --color-error-fondo: #3a1616;
        --color-error-texto: #f28b8b;
    }
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
    background: var(--color-fondo);
    color: var(--color-texto);
}

.nav {
    display: flex;
    gap: 1.25rem;
    padding: 0.75rem 1.5rem;
    border-bottom: 1px solid var(--color-borde);
    flex-wrap: wrap;
}

.nav a {
    color: var(--color-primario);
    text-decoration: none;
}

.nav-salir {
    margin-left: auto;
}

.contenedor {
    max-width: 960px;
    margin: 0 auto;
    padding: 1.5rem;
}

.form {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 480px;
}

.form label {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    font-size: 0.9rem;
}

.form input,
.form textarea {
    padding: 0.5rem;
    border: 1px solid var(--color-borde);
    border-radius: 6px;
    background: transparent;
    color: inherit;
    font: inherit;
}

.form button {
    align-self: flex-start;
    padding: 0.5rem 1.25rem;
    border: none;
    border-radius: 6px;
    background: var(--color-primario);
    color: #fff;
    cursor: pointer;
}

.tabla {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 2rem;
    overflow-x: auto;
    display: block;
}

.tabla th,
.tabla td {
    text-align: left;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--color-borde);
    white-space: nowrap;
}

.alerta {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.alerta-ok {
    background: var(--color-ok-fondo);
    color: var(--color-ok-texto);
}

.alerta-error {
    background: var(--color-error-fondo);
    color: var(--color-error-texto);
}

.badge {
    padding: 0.15rem 0.6rem;
    border-radius: 999px;
    font-size: 0.8rem;
}

.badge-ok {
    background: var(--color-ok-fondo);
    color: var(--color-ok-texto);
}

.badge-error {
    background: var(--color-error-fondo);
    color: var(--color-error-texto);
}

.ayuda {
    font-size: 0.9rem;
    opacity: 0.85;
    max-width: 640px;
}