:root {
    --papel: #fbf3e2;
    --fondo: #f6e7c8;
    --tinta: #2f2418;
    --tinta-suave: #6b5a45;
    --acento: #1f4fb5;
    --acento-oscuro: #163a87;
    --borde: #e2cfa8;
    --chip: #fffaf0;
    --chip-activo: #ffd56b;
    --titulo: #b5561c;
}

@media (prefers-color-scheme: dark) {
    :root {
        --papel: #2a231b;
        --fondo: #1d1813;
        --tinta: #f3e9d8;
        --tinta-suave: #c7b79f;
        --acento: #7fa8ff;
        --acento-oscuro: #a9c4ff;
        --borde: #4a3d2e;
        --chip: #332a20;
        --chip-activo: #6b4a12;
        --titulo: #f8b62a;
    }
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--fondo);
    color: var(--tinta);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-size: 17px;
    line-height: 1.55;
}

.cabecera {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 14px 16px 6px;
    text-align: center;
}
.marca { display: inline-flex; align-items: center; gap: 6px; font-weight: 800; font-size: 1.2rem; color: var(--acento); text-decoration: none; }
.pena { font-size: .85rem; color: var(--tinta-suave); }

.contenido { max-width: 640px; margin: 0 auto; padding: 8px 16px 32px; }

.portada { text-align: center; }
.logo { display: block; width: 58%; max-width: 240px; height: auto; margin: 4px auto 0; filter: drop-shadow(0 6px 10px rgba(0,0,0,.18)); }
.portada h1 { font-family: Georgia, "Times New Roman", serif; font-size: 1.75rem; line-height: 1.2; margin: 12px 0 8px; }
.contador { background: var(--papel); border: 1px dashed var(--borde); border-radius: 12px; padding: 8px 12px; font-size: .95rem; }

.formulario { display: flex; flex-direction: column; gap: 18px; margin-top: 16px; }
.campo { border: 0; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
.etiqueta { font-weight: 700; padding: 0; }

input[type=text], input:not([type]) {
    font: inherit;
    padding: 14px;
    border-radius: 12px;
    border: 2px solid var(--borde);
    background: var(--papel);
    color: var(--tinta);
    width: 100%;
}
input:focus { outline: 3px solid var(--chip-activo); border-color: var(--acento); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip input { position: absolute; opacity: 0; pointer-events: none; }
.chip span {
    display: inline-block;
    padding: 10px 14px;
    border-radius: 999px;
    border: 2px solid var(--borde);
    background: var(--chip);
    cursor: pointer;
    user-select: none;
}
.chip input:checked + span { background: var(--chip-activo); border-color: var(--acento); font-weight: 700; }
.chip input:focus-visible + span { outline: 3px solid var(--acento); }

.error { color: var(--acento); font-size: .9rem; }
.error:empty { display: none; }

.boton {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    font: inherit;
    font-weight: 800;
    font-size: 1.1rem;
    padding: 16px;
    border: 0;
    border-radius: 14px;
    background: var(--acento);
    color: #fff;
    text-decoration: none;
    cursor: pointer;
}
.boton:active { transform: scale(.98); }
.boton.secundario { background: transparent; color: var(--acento); border: 2px solid var(--acento); }

.cuento {
    background: var(--papel);
    border: 1px solid var(--borde);
    border-radius: 16px;
    padding: 20px 18px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, .08);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 1.1rem;
    line-height: 1.7;
}
.cuento h1 { font-size: 1.6rem; line-height: 1.2; margin: 0 0 4px; color: var(--titulo); }
.cuento .meta { font-family: system-ui, sans-serif; font-size: .85rem; color: var(--tinta-suave); margin-top: 0; }
.moraleja { border-top: 2px dashed var(--borde); padding-top: 12px; font-style: italic; }

.diploma {
    margin-top: 16px;
    text-align: center;
    background: var(--chip-activo);
    border-radius: 16px;
    padding: 12px 16px;
}
.diploma h2 { margin: 4px 0; }

.acciones { display: flex; flex-direction: column; gap: 10px; margin-top: 18px; }
.acciones form { margin: 0; }

.cargando {
    position: fixed;
    inset: 0;
    background: color-mix(in srgb, var(--fondo) 92%, transparent);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 16px;
    font-weight: 700;
}
.cargando[hidden] { display: none; }
.libro { font-size: 4rem; animation: pasar 1s ease-in-out infinite alternate; }
@keyframes pasar { from { transform: rotateY(0); } to { transform: rotateY(180deg); } }

.pie { text-align: center; font-size: .8rem; color: var(--tinta-suave); padding: 0 16px 24px; }