:root {
    --sidebar-rail-width: 80px;
    --sidebar-open-width: 272px;
}

@media (min-width: 1025px) {
    .sidebar {
        width: var(--sidebar-rail-width);
        padding: 0.75rem 0.65rem;
        overflow-x: hidden;
        overflow-y: auto;
        background: rgba(20, 34, 75, 0.94);
        box-shadow: 12px 0 40px rgba(0, 7, 20, 0.14);
        transition: width 240ms cubic-bezier(.2,.8,.2,1), box-shadow 240ms ease;
    }

    .sidebar:hover,
    .sidebar:focus-within {
        width: var(--sidebar-open-width);
        box-shadow: 18px 0 55px rgba(0, 7, 20, 0.32);
    }

    .main-content {
        width: auto;
        max-width: none;
        margin-right: 0;
        margin-left: var(--sidebar-rail-width);
        padding-left: var(--space-xl);
        transition: margin-left 240ms ease;
    }

    .site-footer {
        width: auto;
        max-width: none;
        margin-right: 0;
        margin-left: var(--sidebar-rail-width);
        padding-left: var(--space-lg);
        text-align: center;
    }

    .sidebar-header {
        justify-content: flex-start;
        min-height: 58px;
        margin: 0 0 0.85rem;
        padding: 0;
    }

    .sidebar-brand {
        display: flex;
        align-items: center;
        min-width: 240px;
        color: #fff;
        text-decoration: none;
    }

    .sidebar-brand-mark {
        display: grid;
        flex: 0 0 58px;
        width: 58px;
        height: 46px;
        place-items: center;
        border: 1px solid rgba(72, 200, 241, 0.22);
        border-radius: 13px;
        color: #65d9f4;
        background: rgba(72, 200, 241, 0.08);
        font-size: 0.68rem;
        font-weight: 800;
        letter-spacing: 0.08em;
    }

    .sidebar-brand-name {
        margin-left: 0.8rem;
        opacity: 0;
        transform: translateX(-5px);
        transition: opacity 150ms ease 40ms, transform 180ms ease 40ms;
        white-space: nowrap;
        font-size: 0.9rem;
        font-weight: 700;
    }

    .sidebar:hover .sidebar-brand-name,
    .sidebar:focus-within .sidebar-brand-name { opacity: 1; transform: translateX(0); }

    .nav-menu { width: 100%; }

    .nav-link {
        justify-content: flex-start;
        width: 100%;
        min-height: 50px;
        gap: 0;
        margin-bottom: 0.4rem;
        padding: 0;
        border-radius: 13px;
        transform: none;
    }

    .nav-link:hover,
    .nav-link:focus { transform: none; }

    .nav-link::before { width: 3px; }

    .nav-icon {
        flex: 0 0 auto;
        width: 22px;
        height: 22px;
        margin: 0 18px;
    }

    .nav-link > span {
        opacity: 0;
        transform: translateX(-5px);
        transition: opacity 150ms ease 40ms, transform 180ms ease 40ms;
        white-space: nowrap;
    }

    .sidebar:hover .nav-link > span,
    .sidebar:focus-within .nav-link > span { opacity: 1; transform: translateX(0); }

    .sidebar-footer {
        width: 250px;
        opacity: 0;
        pointer-events: none;
        transition: opacity 150ms ease;
    }

    .sidebar:hover .sidebar-footer,
    .sidebar:focus-within .sidebar-footer { opacity: 1; pointer-events: auto; transition-delay: 80ms; }
}

@media (max-width: 1024px) {
    .sidebar {
        width: min(86vw, 310px);
        padding: 0.85rem;
        transform: translateX(-100%);
        background: rgba(18, 32, 72, 0.98);
        box-shadow: 20px 0 60px rgba(0, 4, 16, 0.45);
        transition: transform 260ms cubic-bezier(.2,.8,.2,1);
    }

    .sidebar.active { transform: translateX(0); }

    .sidebar-header { justify-content: space-between; margin-bottom: 0.75rem; padding: 0.25rem; }
    .sidebar-brand { display: flex; align-items: center; color: #fff; text-decoration: none; }
    .sidebar-brand-mark { color: #5bd5f3; font-size: 0.72rem; font-weight: 800; letter-spacing: 0.08em; }
    .sidebar-brand-name { margin-left: 0.65rem; font-size: 0.86rem; font-weight: 700; }
    .sidebar-toggle { padding: 0.55rem; }
    .sidebar-toggle { display: block; }

    .nav-link { min-height: 48px; }
    .mobile-menu-btn { display: flex; top: 0.8rem; left: 1rem; width: 44px; height: 44px; }

    .mobile-menu-btn .hamburger-line {
        width: 21px;
        height: 2px;
        background: #dceaf5;
    }

    .main-content {
        max-width: none;
        margin-left: 0;
        padding-top: 80px;
    }

    .site-footer { width: auto; max-width: none; margin-right: 0; margin-left: 0; padding-left: var(--space-lg); }

    #inicio .home-current { padding-top: 3.5rem; }

    .prediction-v5 { padding-top: 3.75rem; }

    .prediction-v5 .meteoblue-forecast-embed {
        position: relative;
        background-image: linear-gradient(to left, rgba(72, 200, 241, 0.18), transparent 18px);
        background-attachment: local;
    }
}

/* Algunos tablets anuncian un viewport de escritorio. La capacidad táctil
   es una señal más fiable para mantener el patrón de cajón lateral. */
@media (hover: none) and (pointer: coarse) {
    .sidebar {
        width: min(86vw, 310px);
        padding: 0.85rem;
        transform: translateX(-100%);
        background: rgba(18, 32, 72, 0.98);
        box-shadow: 20px 0 60px rgba(0, 4, 16, 0.45);
    }

    .sidebar.active { transform: translateX(0); }
    .sidebar-header { justify-content: space-between; }
    .sidebar-brand-name,
    .nav-link > span,
    .sidebar-footer { opacity: 1; transform: none; pointer-events: auto; }
    .sidebar-toggle { display: block; }
    .mobile-menu-btn { display: flex; }
    .main-content { max-width: none; margin-left: 0; padding-top: 80px; }
    .site-footer { max-width: none; margin-right: 0; margin-left: 0; padding-left: var(--space-lg); }
    #inicio .home-current { padding-top: 3.5rem; }
}

@media (min-width: 769px) and (max-width: 1024px) {
    #inicio .home-current { padding-top: 5.5rem; }
    .prediction-v5 { padding-top: 5.5rem; }
}

/* iPad y otros tablets que usan un viewport superior a 1024 px pero
   mantienen interacción táctil: la portada empieza bajo el botón flotante. */
@media (min-width: 769px) and (hover: none) and (pointer: coarse) {
    #inicio .home-current { padding-top: 5.5rem; }
    .prediction-v5 { padding-top: 5.5rem; }
}

/* Portátiles con poca altura útil: todos los accesos caben sin scrollbar.
   Se exige puntero fino para no modificar el patrón de navegación del iPad. */
@media (min-width: 1025px) and (max-height: 820px) and (hover: hover) and (pointer: fine) {
    .sidebar {
        padding: 0.45rem 0.55rem;
        overflow-y: hidden;
    }

    .sidebar-header {
        min-height: 44px;
        margin-bottom: 0.35rem;
    }

    .sidebar-brand-mark {
        height: 40px;
        border-radius: 11px;
    }

    .nav-menu {
        min-height: 0;
    }

    .nav-link {
        min-height: 42px;
        margin-bottom: 0.18rem;
    }

    .nav-icon {
        width: 20px;
        height: 20px;
    }

    .sidebar-footer {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .sidebar,
    .sidebar-brand-name,
    .nav-link > span,
    .sidebar-footer { transition: none !important; }
}