/* =============================================================
   Certifications Section + Slider Component
   Shared slider styles are here; certifications and clients
   both extend .slider via section-specific wrappers.
   Tema Piedrangular
   ============================================================= */

/* =============================================================
   Certifications section wrapper
   ============================================================= */
.certs-section {
    padding: 4rem 0;
    background-color: #ffffff;
}

/* Override section-title for this section */
.certs-section .section-title {
    margin-bottom: 2.5rem;
}

.certs-section .section-title__heading {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    color: var(--color-primary, #1a4ddb);
    text-align: center;
}

.certs-section .section-title--center .section-title__underline {
    margin-left: auto;
    margin-right: auto;
}

.certs-section__empty {
    text-align: center;
    color: #999;
    font-size: 0.9375rem;
    padding: 2rem 0;
}

/* =============================================================
   Slider component — shared styles
   Used by both certifications and clients sections
   ============================================================= */
.slider {
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
    gap: 0.75rem;
}

.slider__viewport {
    flex: 1;
    overflow: hidden;
}

.slider__track {
    display: flex;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
    width: max-content; /* permite que el track crezca según los logos (clave para loop) */
}

.slider__item {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
}

.slider__item img {
    display: block;
    max-height: 144px;
    max-width: 240px;
    width: auto;
    object-fit: contain; 
    opacity: 0.85;
    transition: filter 0.25s, opacity 0.25s;
    pointer-events: none;
    user-select: none;
}

.slider__item:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

/* Prev / Next buttons */
.slider__btn {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid #d0daea;
    border-radius: 50%;
    background: transparent;
    color: #555;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s, color 0.2s;
    padding: 0;
}

.slider__btn:hover:not(:disabled) {
    background-color: var(--color-primary, #1a4ddb);
    border-color: var(--color-primary, #1a4ddb);
    color: #ffffff;
}

.slider__btn:disabled {
    opacity: 0.3;
    cursor: default;
}

/* =============================================================
   Responsive
   ============================================================= */
@media (max-width: 600px) {
    .certs-section {
        padding: 2.5rem 0;
    }

    .slider__item {
        padding: 0.5rem 0.75rem;
    }

    .slider__item img {
        max-height: 48px;
    }
}