/* ============================================
   COLÉGIO MONTESSORI — SLIDER.CSS
   Carrossel fullscreen estilo Bootstrap 5
   ============================================ */

/* ---------- VARIÁVEIS DO SLIDER ---------- */
.slider {
    --slider-transition-speed: 600ms;
    --slider-transition-easing: cubic-bezier(0.4, 0, 0.2, 1);
    --slider-arrow-size: 45px;
    --slider-arrow-size-mobile: 35px;
    --slider-arrow-bg: rgba(255, 255, 255, 0.3);
    --slider-arrow-bg-hover: rgba(255, 255, 255, 0.7);
    --slider-dot-color: rgba(255, 255, 255, 0.5);
    --slider-dot-active: rgba(255, 255, 255, 1);
}

/* ---------- CONTAINER PRINCIPAL ---------- */
.slider {
    position: relative;
    width: 100%;
    max-width: 100%;
    overflow: hidden;
    background: #1a1a1a;
    user-select: none;
    -webkit-user-select: none;
}

/* ---------- TRACK (faixa de slides) ---------- */
.slider__track {
    display: flex;
    width: 100%;
    transition: transform var(--slider-transition-speed) var(--slider-transition-easing);
    will-change: transform;
}

/* Desabilitar transição durante swipe */
.slider__track--dragging {
    transition: none;
}

/* ---------- SLIDE INDIVIDUAL ---------- */
.slider__slide {
    flex-shrink: 0;
    width: 100%;
    position: relative;
}

/* ---------- IMAGEM DO SLIDE ---------- */
.slider__image {
    width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   SETAS DE NAVEGAÇÃO
   ============================================ */
.slider__arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
    width: var(--slider-arrow-size-mobile);
    height: var(--slider-arrow-size-mobile);
    border: none;
    border-radius: 50%;
    background: var(--slider-arrow-bg);
    color: #fff;
    font-size: 0.85rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.slider__arrow:hover {
    background: var(--slider-arrow-bg-hover);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.slider__arrow:active {
    transform: translateY(-50%) scale(0.95);
}

.slider__arrow--prev {
    left: 12px;
}

.slider__arrow--next {
    right: 12px;
}

/* ============================================
   INDICADORES (DOTS)
   ============================================ */
.slider__indicators {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 8px;
}

.slider__dot {
    width: 10px;
    height: 10px;
    border: none;
    border-radius: 50px;
    background: var(--slider-dot-color);
    cursor: pointer;
    padding: 0;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                background 0.3s ease,
                opacity 0.3s ease;
}

.slider__dot:hover {
    background: rgba(255, 255, 255, 0.75);
}

.slider__dot--active {
    width: 30px;
    background: var(--slider-dot-active);
}

/* ============================================
   RESPONSIVO — TABLET (768px+)
   ============================================ */
@media (min-width: 768px) {
    .slider__arrow {
        width: 40px;
        height: 40px;
        font-size: 0.9rem;
    }

    .slider__arrow--prev {
        left: 16px;
    }

    .slider__arrow--next {
        right: 16px;
    }

    .slider__indicators {
        bottom: 20px;
        gap: 10px;
    }

    .slider__dot {
        width: 12px;
        height: 12px;
    }

    .slider__dot--active {
        width: 35px;
    }
}

/* ============================================
   RESPONSIVO — DESKTOP (1024px+)
   ============================================ */
@media (min-width: 1024px) {
    .slider__arrow {
        width: var(--slider-arrow-size);
        height: var(--slider-arrow-size);
        font-size: 1rem;
    }

    .slider__arrow--prev {
        left: 20px;
    }

    .slider__arrow--next {
        right: 20px;
    }

    .slider__indicators {
        bottom: 24px;
        gap: 10px;
    }
}

/* ============================================
   ACESSIBILIDADE — PREFERS REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    .slider__track {
        transition: none;
    }

    .slider__dot {
        transition: none;
    }

    .slider__arrow {
        transition: none;
    }
}