:root {
    --azul-oscuro: #1f2d5c;
    --azul-medio: #293b78;
    --azul-suave: #eef2fb;
    --amarillo: #f2b632;
    --amarillo-suave: #fff3d3;
    --blanco: #ffffff;
    --texto: #263047;
    --gris: #f5f2ea;
    --sombra: rgba(31, 45, 92, 0.18);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Arial", "Helvetica", sans-serif;
    background: linear-gradient(135deg, #f7f3e8, #eef2fb);
    color: var(--texto);
}

/* ENCABEZADO */
.hero {
    min-height: 260px;
    background:
        radial-gradient(circle at top right, rgba(242, 182, 50, 0.35), transparent 30%),
        linear-gradient(135deg, var(--azul-oscuro), var(--azul-medio));
    color: var(--blanco);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 35px 20px;
    border-bottom-left-radius: 40px;
    border-bottom-right-radius: 40px;
    box-shadow: 0 10px 30px var(--sombra);
}

.hero h1 {
    font-size: 2.8rem;
    margin: 0 0 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 900;
}

.hero p {
    font-size: 1.15rem;
    margin: 0;
    opacity: 0.95;
}

#fecha {
    display: inline-block;
    margin-top: 18px;
    background: var(--amarillo);
    color: var(--azul-oscuro);
    padding: 9px 20px;
    border-radius: 999px;
    font-weight: 800;
}

/* MENÚ */
.menu {
    max-width: 1050px;
    margin: -28px auto 0;
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    background: var(--blanco);
    padding: 16px;
    border-radius: 24px;
    box-shadow: 0 8px 24px var(--sombra);
    position: sticky;
    top: 12px;
    z-index: 10;
}

.menu button {
    border: none;
    background: var(--azul-oscuro);
    color: var(--blanco);
    padding: 13px 20px;
    border-radius: 14px;
    cursor: pointer;
    font-weight: 800;
    transition: 0.25s ease;
}

.menu button:hover {
    background: var(--amarillo);
    color: var(--azul-oscuro);
    transform: translateY(-2px);
}

/* CONTENIDO */
.contenedor {
    max-width: 1100px;
    margin: auto;
    padding: 40px 20px;
}

.seccion {
    display: none;
    animation: aparecer 0.35s ease;
}

.seccion.activa {
    display: block;
}

h2 {
    color: var(--azul-oscuro);
    font-size: 2rem;
    margin-bottom: 24px;
    border-left: 8px solid var(--amarillo);
    padding-left: 14px;
    text-transform: uppercase;
}

/* TARJETAS */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 22px;
}

.card {
    background: var(--blanco);
    border-radius: 24px;
    padding: 24px;
    box-shadow: 0 8px 24px var(--sombra);
    border-top: 8px solid var(--amarillo);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: "";
    position: absolute;
    right: -35px;
    top: -35px;
    width: 100px;
    height: 100px;
    background: rgba(242, 182, 50, 0.18);
    border-radius: 50%;
}

.card h3 {
    margin-top: 0;
    color: var(--azul-oscuro);
    font-size: 1.35rem;
}

.card p {
    line-height: 1.5;
}

.hora {
    display: inline-block;
    background: var(--azul-oscuro);
    color: var(--blanco);
    padding: 7px 14px;
    border-radius: 999px;
    font-weight: 800;
    margin-bottom: 14px;
}

.lugar {
    font-weight: 800;
    color: var(--azul-medio);
}

.card a {
    display: inline-block;
    margin-top: 12px;
    background: var(--amarillo);
    color: var(--azul-oscuro);
    text-decoration: none;
    padding: 11px 16px;
    border-radius: 12px;
    font-weight: 800;
}

.card a:hover {
    background: var(--azul-oscuro);
    color: var(--blanco);
}

/* AVISOS */
.avisos {
    background: var(--blanco);
    padding: 28px 38px;
    border-radius: 24px;
    box-shadow: 0 8px 24px var(--sombra);
    border-left: 8px solid var(--amarillo);
}

.avisos li {
    margin-bottom: 14px;
    font-size: 1.05rem;
    line-height: 1.5;
}

/* PIE */
footer {
    text-align: center;
    padding: 24px;
    background: var(--azul-oscuro);
    color: var(--blanco);
    margin-top: 30px;
}

/* ANIMACIÓN */
@keyframes aparecer {
    from {
        opacity: 0;
        transform: translateY(14px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 650px) {
    .hero {
        min-height: 220px;
    }

    .hero h1 {
        font-size: 1.9rem;
    }

    .menu {
        margin: -20px 15px 0;
    }

    .menu button {
        width: 100%;
    }

    h2 {
        font-size: 1.5rem;
    }
}

/* =========================
   RESPONSIVE COMPLETO
========================= */

/* Tablets */
@media (max-width: 900px) {
    .hero {
        min-height: 230px;
        padding: 30px 18px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .contenedor {
        padding: 35px 18px;
    }

    .cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Celulares grandes */
@media (max-width: 700px) {
    .hero {
        min-height: auto;
        padding: 45px 18px 60px;
        border-bottom-left-radius: 28px;
        border-bottom-right-radius: 28px;
    }

    .hero h1 {
        font-size: 1.8rem;
        line-height: 1.15;
        letter-spacing: 1px;
    }

    .hero p {
        font-size: 1rem;
    }

    #fecha {
        font-size: 0.9rem;
        padding: 8px 16px;
    }

    .menu {
        position: relative;
        top: auto;
        margin: -35px 14px 0;
        padding: 12px;
        border-radius: 20px;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }

    .menu button {
        width: 100%;
        padding: 12px 10px;
        font-size: 0.9rem;
    }

    .contenedor {
        padding: 30px 14px;
    }

    h2 {
        font-size: 1.4rem;
        line-height: 1.2;
    }

    .cards {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .card {
        padding: 20px;
        border-radius: 20px;
    }

    .card h3 {
        font-size: 1.18rem;
    }

    .card p {
        font-size: 0.96rem;
    }

    .avisos {
        padding: 22px 24px;
    }
}

/* Celulares pequeños */
@media (max-width: 420px) {
    body {
        font-size: 15px;
    }

    .hero {
        padding: 38px 14px 55px;
    }

    .hero h1 {
        font-size: 1.45rem;
    }

    .hero p {
        font-size: 0.92rem;
    }

    .menu {
        grid-template-columns: 1fr;
        margin-left: 10px;
        margin-right: 10px;
    }

    .menu button {
        font-size: 0.95rem;
    }

    .contenedor {
        padding: 24px 10px;
    }

    h2 {
        font-size: 1.25rem;
        padding-left: 10px;
        border-left-width: 6px;
    }

    .card {
        padding: 18px;
    }

    .hora {
        font-size: 0.85rem;
    }

    .card a {
        width: 100%;
        text-align: center;
    }

    .avisos {
        padding: 20px;
    }

    footer {
        font-size: 0.85rem;
        padding: 18px 12px;
    }
}

/* Pantallas grandes */
@media (min-width: 1200px) {
    .hero h1 {
        font-size: 3.3rem;
    }

    .contenedor {
        max-width: 1200px;
    }

    .cards {
        grid-template-columns: repeat(3, 1fr);
    }
}

.btn-link {
    display: inline-block;
    background: var(--azul-oscuro);
    color: var(--blanco);
    padding: 13px 20px;
    border-radius: 14px;
    text-decoration: none;
    font-weight: 800;
    transition: 0.25s ease;
}

.btn-link:hover {
    background: var(--amarillo);
    color: var(--azul-oscuro);
    transform: translateY(-2px);
}

.dias {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.bloque-dia {
    background: rgba(255, 255, 255, 0.65);
    padding: 22px;
    border-radius: 26px;
    box-shadow: 0 8px 24px var(--sombra);
}

.encabezado-dia {
    background: var(--azul-oscuro);
    color: white;
    padding: 18px 22px;
    border-radius: 20px;
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.encabezado-dia h3 {
    margin: 0;
    font-size: 1.4rem;
}

.encabezado-dia span {
    background: var(--amarillo);
    color: var(--azul-oscuro);
    padding: 7px 14px;
    border-radius: 999px;
    font-weight: 800;
}

.actividad-dia {
    border-top: 6px solid var(--amarillo);
}

@media (max-width: 600px) {
    .bloque-dia {
        padding: 16px;
    }

    .encabezado-dia {
        padding: 16px;
    }

    .encabezado-dia h3 {
        font-size: 1.15rem;
    }

    .btn-link {
        width: 100%;
        text-align: center;
    }
}

.selector-dia {
    margin: 1rem 0 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.selector-dia label {
    font-weight: 700;
}

.selector-dia input {
    max-width: 260px;
    padding: 0.75rem 1rem;
    border-radius: 14px;
    border: 1px solid rgba(0,0,0,0.15);
    font-size: 1rem;
}

/* =========================
   PÁGINA NÚCLEOS
========================= */

.nucleo-tabla {
    background: white;
    border: 1px solid rgba(31, 45, 92, 0.35);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 8px 24px var(--sombra);
    margin-bottom: 30px;
}

.nucleo-titulo {
    background: #d8e1f2;
    color: #111827;
    text-align: center;
    padding: 18px;
    border-bottom: 1px solid rgba(31, 45, 92, 0.35);
}

.nucleo-titulo h3 {
    margin: 0;
    font-size: 1.35rem;
}

.nucleo-grid {
    display: grid;
    grid-template-columns: 1fr 1.25fr 1.25fr;
}

.nucleo-columna {
    padding: 22px;
    border-right: 1px solid rgba(31, 45, 92, 0.35);
}

.nucleo-columna:last-child {
    border-right: none;
}

.nucleo-columna h4 {
    color: #c00000;
    font-size: 1.15rem;
    text-align: center;
    margin: 0 0 20px;
}

.nucleo-subtitulo,
.zona {
    font-weight: 900;
    color: #111827;
    margin-bottom: 8px;
}

.zona {
    margin-top: 18px;
}

.nucleo-columna ul {
    margin: 0 0 12px;
    padding-left: 22px;
}

.nucleo-columna li {
    margin-bottom: 8px;
    line-height: 1.35;
}

/* Encabezado general de la página núcleos */
.nucleos-intro {
    background: #dce8f5;
    color: #c00000;
    text-align: center;
    padding: 24px;
    border-radius: 18px;
    margin-bottom: 24px;
    font-weight: 900;
    font-style: italic;
}

/* RESPONSIVE NÚCLEOS */
@media (max-width: 950px) {
    .nucleo-grid {
        grid-template-columns: 1fr;
    }

    .nucleo-columna {
        border-right: none;
        border-bottom: 1px solid rgba(31, 45, 92, 0.25);
    }

    .nucleo-columna:last-child {
        border-bottom: none;
    }

    .nucleo-columna h4 {
        text-align: left;
    }
}

@media (max-width: 500px) {
    .nucleo-titulo h3 {
        font-size: 1.1rem;
    }

    .nucleo-columna {
        padding: 18px;
    }

    .nucleo-columna h4 {
        font-size: 1rem;
    }

    .nucleo-columna li {
        font-size: 0.94rem;
    }
}

/* =========================
   NAVEGACIÓN NÚCLEOS
========================= */

.navegacion-nucleos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.navegacion-nucleos button {
    background: var(--azul-oscuro);
    color: white;
    border: none;
    padding: 12px 18px;
    border-radius: 12px;
    font-weight: 800;
    cursor: pointer;
    transition: 0.2s;
}

.navegacion-nucleos button:hover {
    background: var(--amarillo);
    color: var(--azul-oscuro);
    transform: scale(1.05);
}

#indicadorNucleo {
    font-weight: 900;
    font-size: 1.2rem;
    background: var(--amarillo);
    color: var(--azul-oscuro);
    padding: 10px 18px;
    border-radius: 999px;
}

/* RESPONSIVE */
@media (max-width: 500px) {
    .navegacion-nucleos {
        flex-direction: column;
    }

    .navegacion-nucleos button {
        width: 100%;
    }
}

#selectorNucleo {
    min-width: 280px;
    max-width: 420px;
    padding: 12px 16px;
    border-radius: 12px;
    border: 2px solid var(--azul-oscuro);
    background: white;
    color: var(--azul-oscuro);
    font-weight: 800;
    cursor: pointer;
}

#selectorNucleo:focus {
    outline: none;
    border-color: var(--amarillo);
    box-shadow: 0 0 0 3px rgba(242, 182, 50, 0.25);
}

@media (max-width: 600px) {
    #selectorNucleo {
        width: 100%;
        min-width: auto;
    }
}

.mapas-panel {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 24px;
    align-items: stretch;
}

.mapas-controles {
    background: #ffffff;
    border-radius: 20px;
    padding: 22px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
}

.mapas-controles label {
    display: block;
    font-weight: 700;
    margin-bottom: 8px;
    color: #1f3c88;
}

.mapas-controles select {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 2px solid #dde4f2;
    font-size: 1rem;
    outline: none;
}

.mapa-info {
    margin-top: 24px;
}

.mapa-info h3 {
    margin-bottom: 8px;
    color: #1f3c88;
}

.mapa-info p {
    color: #555;
    line-height: 1.5;
}

.btn-mapa {
    display: inline-block;
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: 14px;
    background: #f4b400;
    color: #1a1a1a;
    font-weight: 700;
    text-decoration: none;
    transition: 0.2s ease;
}

.btn-mapa:hover {
    transform: translateY(-2px);
    background: #ffd45a;
}

#mapaPrincipal {
    width: 100%;
    min-height: 520px;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

/* Responsivo */
@media (max-width: 850px) {
    .mapas-panel {
        grid-template-columns: 1fr;
    }

    #mapaPrincipal {
        min-height: 420px;
    }
}

@media (max-width: 480px) {
    .mapas-controles {
        padding: 16px;
    }

    #mapaPrincipal {
        min-height: 360px;
        border-radius: 18px;
    }
}

.btn-offline {
    background: linear-gradient(135deg, #0133CC, #ffd45a);
    color: white;
    border: none;
    padding: 12px 18px;
    border-radius: 12px;
    cursor: pointer;
    font-weight: bold;
    margin-top: 10px;
    transition: 0.3s;
}

.btn-offline:hover {
    transform: scale(1.05);
    opacity: 0.9;
}