:root {
    --travel-cyan: #3fd9e4;
    --travel-purple: #8338ec;
    --travel-dark: #1a2a3a;
    --bg-neumorphic: #ffffffeb;
    --card-surface: rgba(255, 255, 255, .94);
    --card-border: rgba(12, 75, 84, .14);
    --card-shadow: 0 14px 36px rgba(7, 60, 121, .10);
    --card-shadow-hover: 0 24px 60px rgba(7, 60, 121, .18);
    --transition-smooth: transform .32s cubic-bezier(.22, 1, .36, 1), box-shadow .32s cubic-bezier(.22, 1, .36, 1), color .22s ease, background-color .22s ease, border-color .22s ease, opacity .22s ease;
}

/* Contenedor de la sección */
.services {
    background-color: var(--bg-neumorphic);
    padding: clamp(42px, 6vw, 60px) 20px;
}

/* Grid del contenedor de tarjetas */
.services .container-grid {
    display: grid;
    gap: clamp(14px, 2vw, 22px);
    max-width: 1180px;
    margin: clamp(24px, 4vw, 36px) auto 0;
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* --- TARJETA SIGNATURE --- */
.signature-card {
    background: linear-gradient(180deg, var(--card-surface), rgba(246, 250, 255, .92));
    border-radius: 20px;
    padding: 18px 18px 16px;
    position: relative;
    box-shadow: var(--card-shadow);
    overflow: visible;
    transition: var(--transition-smooth);
    border: 1px solid var(--card-border);
    cursor: pointer;
    z-index: 1;
    display: flex;
    flex-direction: column;
    transform: translateZ(0);
    will-change: transform;
    min-height: 100%;
    isolation: isolate;
}

.signature-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    background: radial-gradient(circle at top left, rgba(63, 217, 228, .17), transparent 46%);
    opacity: .72;
    z-index: -1;
}

/* Efecto Reveal de Imagen */
.signature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity .55s ease, transform .55s cubic-bezier(.22, 1, .36, 1);
    z-index: -2;
    filter: grayscale(100%) brightness(1.1);
    border-radius: inherit;
    transform: scale(1.02);
}

/* Imágenes específicas */
.card-visa::before { background-image: url('https://images.unsplash.com/photo-1549294413-26f1d5241045?q=80&w=800'); }
.card-passport::before { background-image: url('https://images.unsplash.com/photo-1534394415125-0f01cc64aa61?q=80&w=800'); }
.card-citas::before { background-image: url('https://images.unsplash.com/photo-1434030216411-0b793f4b4173?q=80&w=800'); }
.card-asesoria::before { background-image: url('https://images.unsplash.com/photo-1521737604893-d14cc237f11d?q=80&w=800'); }

.signature-card:hover,
.signature-card:focus-within {
    transform: translate3d(0, -7px, 0) scale(1.012);
    border-color: rgba(46, 159, 145, .38);
    box-shadow: var(--card-shadow-hover);
}

.signature-card:hover::before,
.signature-card:focus-within::before {
    opacity: .08;
    transform: scale(1);
}

/* Elementos internos */
.card-header-signature {
    display: grid;
    justify-items: center;
    gap: 6px;
}

.icon-circle-travel {
    width: 52px;
    height: 52px;
    background: rgba(255, 255, 255, .88);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 6px;
    box-shadow: inset 0 1px 0 rgba(255,255,255,.9), 0 10px 24px rgba(7, 60, 121, .12);
    transition: var(--transition-smooth);
    border: 1px solid rgba(63, 217, 228, .16);
}

.signature-card:hover .icon-circle-travel,
.signature-card:focus-within .icon-circle-travel {
    transform: translateY(-2px) scale(1.04) rotate(-1deg);
    box-shadow: inset 0 1px 0 rgba(255,255,255,.92), 0 14px 28px rgba(63, 217, 228, .18);
    border-color: rgba(131, 56, 236, .26);
}

.icon-circle-travel i {
    font-size: 1.45rem;
    background: linear-gradient(135deg, var(--travel-cyan), var(--travel-purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.signature-card h3 {
    font-size: clamp(.92rem, 1.15vw, 1.12rem);
    font-weight: 850;
    color: var(--travel-dark);
    margin: 2px 0 0;
    text-transform: uppercase;
    letter-spacing: -.02em;
    line-height: 1.08;
}

.desc-signature {
    font-size: .86rem;
    color: #4b5563;
    line-height: 1.36;
    margin: 0 0 12px;
    max-width: 21ch;
}

/* Lista de servicios */
.services-list-travel {
    list-style: none;
    padding: 0;
    text-align: left;
    margin: auto 0 0;
    display: grid;
    gap: 6px;
}

.services-list-travel li {
    --tooltip-y: 8px;
    font-size: .82rem;
    line-height: 1.18;
    padding: 7px 9px;
    color: var(--travel-dark);
    display: flex;
    align-items: center;
    gap: 8px;
    border-radius: 12px;
    position: relative;
    cursor: pointer;
    outline: none;
    background: rgba(255,255,255,.52);
    border: 1px solid rgba(12, 75, 84, .07);
    transition: var(--transition-smooth);
}

.services-list-travel li i {
    color: var(--travel-cyan);
    font-size: .72rem;
    width: 14px;
    min-width: 14px;
    text-align: center;
    margin-right: 0;
    transition: transform .22s cubic-bezier(.22, 1, .36, 1), color .22s ease;
}

.services-list-travel li:hover,
.services-list-travel li:focus-visible {
    color: var(--travel-purple);
    background: linear-gradient(135deg, rgba(63, 217, 228, .12), rgba(131, 56, 236, .09));
    border-color: rgba(131, 56, 236, .18);
    transform: translateX(3px);
    box-shadow: 0 8px 18px rgba(7, 60, 121, .08);
}

.services-list-travel li:hover i,
.services-list-travel li:focus-visible i {
    color: var(--travel-purple);
    transform: scale(1.15) rotate(-4deg);
}

.services-list-travel li[data-info]::after {
    content: attr(data-info);
    position: absolute;
    left: 8px;
    right: 8px;
    bottom: calc(100% + 8px);
    z-index: 20;
    padding: 9px 10px;
    border-radius: 12px;
    background: rgba(10, 23, 42, .96);
    color: #fff;
    font-size: .72rem;
    font-weight: 500;
    line-height: 1.28;
    box-shadow: 0 16px 34px rgba(2, 6, 23, .22);
    opacity: 0;
    pointer-events: none;
    transform: translateY(var(--tooltip-y)) scale(.98);
    transition: opacity .2s ease, transform .22s cubic-bezier(.22, 1, .36, 1);
}

.services-list-travel li[data-info]::before {
    content: '';
    position: absolute;
    left: 22px;
    bottom: calc(100% + 2px);
    border: 6px solid transparent;
    border-top-color: rgba(10, 23, 42, .96);
    opacity: 0;
    transform: translateY(var(--tooltip-y));
    transition: opacity .2s ease, transform .22s cubic-bezier(.22, 1, .36, 1);
    z-index: 21;
}

.services-list-travel li[data-info]:hover::after,
.services-list-travel li[data-info]:hover::before,
.services-list-travel li[data-info]:focus-visible::after,
.services-list-travel li[data-info]:focus-visible::before {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.services-list-travel li:nth-last-child(-n + 2)::after {
    bottom: auto;
    top: calc(100% + 8px);
}

.services-list-travel li:nth-last-child(-n + 2)::before {
    bottom: auto;
    top: calc(100% + 2px);
    border-top-color: transparent;
    border-bottom-color: rgba(10, 23, 42, .96);
}

/* Botón Estilo App */
.btn-action-travel {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 15px;
    background: linear-gradient(135deg, var(--travel-cyan), var(--travel-purple));
    color: white;
    font-weight: 700;
    font-size: 0.75rem;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.btn-action-travel:active {
    transform: scale(0.95);
}

.brand-footer-signature {
    font-size: 0.6rem;
    color: #a0aec0;
    margin-top: 15px;
    font-weight: bold;
}

/* =============================================
   RESPONSIVE (LOOK APP NATIVA)
   ============================================= */

@media (max-width: 1100px) {
    .services .container-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        max-width: 760px;
    }
}

@media (max-width: 640px) {
    .services {
        padding: 36px 12px;
    }

    .services .container-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
        padding: 0;
        margin-top: 22px;
    }

    .signature-card {
        border-radius: 18px;
        padding: 12px 10px 10px;
        box-shadow: 0 10px 26px rgba(7, 60, 121, .10);
    }

    .card-header-signature {
        gap: 4px;
    }

    .icon-circle-travel {
        width: 42px;
        height: 42px;
        border-radius: 15px;
        margin-bottom: 4px;
    }

    .icon-circle-travel i {
        font-size: 1.14rem;
    }

    .signature-card h3 {
        font-size: .78rem;
        line-height: 1.08;
        min-height: 1.72em;
        display: grid;
        place-items: center;
    }

    .desc-signature {
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        font-size: .68rem;
        line-height: 1.24;
        margin-bottom: 8px;
        max-width: none;
    }

    .services-list-travel {
        gap: 5px;
    }

    .services-list-travel li {
        font-size: .68rem;
        padding: 6px 6px;
        border-radius: 10px;
        gap: 5px;
    }

    .services-list-travel li i {
        font-size: .62rem;
        width: 11px;
        min-width: 11px;
    }

    .services-list-travel li[data-info]::after {
        left: -4px;
        right: -4px;
        font-size: .66rem;
        padding: 8px;
        border-radius: 10px;
    }
}

@media (max-width: 360px) {
    .services .container-grid {
        gap: 8px;
    }

    .signature-card {
        padding: 10px 8px 9px;
    }

    .signature-card h3 {
        font-size: .72rem;
    }

    .desc-signature {
        font-size: .64rem;
    }

    .services-list-travel li {
        font-size: .64rem;
        padding: 5px;
    }
}

@media (hover: none) {
  .signature-card:hover { transform: none; }
  .signature-card:hover .icon-circle-travel { transform: none; }
  .services-list-travel li:hover { transform: none; }
}