/* Image Slider Styles - Fullscreen lightbox/slider */

/* ========================================
   SLIDER OVERLAY
   ======================================== */

.slider-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-overlay);
    z-index: var(--z-index-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.slider-overlay.active {
    opacity: 1;
    visibility: visible;
}


/* ========================================
   SLIDER CONTENT
   ======================================== */

.slider-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3xl);
}


/* ========================================
   SLIDER IMAGE
   ======================================== */

.slider-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    user-select: none;
    -webkit-user-drag: none;
}


/* ========================================
   SLIDER CONTROLS
   ======================================== */

.slider-close,
.slider-prev,
.slider-next {
    position: absolute;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--color-background);
    border: none;
    padding: var(--spacing-md);
    cursor: pointer;
    font-size: var(--font-size-2xl);
    line-height: 1;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: var(--z-index-modal);
}

.slider-close:hover,
.slider-prev:hover,
.slider-next:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.slider-close:focus-visible,
.slider-prev:focus-visible,
.slider-next:focus-visible {
    outline: 2px solid var(--color-background);
    outline-offset: 2px;
}

.slider-close:active,
.slider-prev:active,
.slider-next:active {
    transform: scale(0.95);
}


/* ========================================
   SLIDER CLOSE BUTTON
   ======================================== */

.slider-close {
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}


/* ========================================
   SLIDER NAVIGATION BUTTONS
   ======================================== */

.slider-prev {
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    border-radius: var(--border-radius-md);
}

.slider-prev:hover,
.slider-prev:active {
    transform: translateY(-50%) scale(1.05);
}

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

.slider-next {
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    border-radius: var(--border-radius-md);
}

.slider-next:hover,
.slider-next:active {
    transform: translateY(-50%) scale(1.05);
}

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


/* ========================================
   SLIDER COUNTER
   ======================================== */

.slider-counter {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    background-color: rgba(0, 0, 0, 0.5);
    color: var(--color-background);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    user-select: none;
}


/* ========================================
   BODY LOCK (when slider is open)
   ======================================== */

body.slider-open {
    overflow: hidden;
}


/* ========================================
   DISABLED STATE (for navigation buttons)
   ======================================== */

.slider-prev:disabled,
.slider-next:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.slider-prev:disabled:hover,
.slider-next:disabled:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-50%);
}


/* ========================================
   LOADING STATE
   ======================================== */

.slider-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-background);
    font-size: var(--font-size-lg);
}


/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.slider-image {
    animation: fadeIn var(--transition-base);
}