/**
 * TSV Lightbox Styles
 * Lightweight Vanilla JS Lightbox - Fancybox Ersatz
 */

/* ========================================
   1. OVERLAY (HINTERGRUND)
   ======================================== */
.tsv-lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

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

/* ========================================
   2. MODAL CONTAINER
   ======================================== */
.tsv-lightbox-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
    padding: 20px;
}

.tsv-lightbox-modal.active {
    opacity: 1;
    visibility: visible;
}

/* ========================================
   3. CONTENT & IMAGE
   ======================================== */
.tsv-lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    pointer-events: none;
}

.tsv-lightbox-image {
    max-width: 90vw;
    max-height: calc(90vh - 80px);
    height: auto;
    width: auto;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.tsv-lightbox-image.loaded {
    opacity: 1;
    transform: scale(1);
}

/* ========================================
   4. CAPTION
   ======================================== */
.tsv-lightbox-caption {
    margin-top: 20px;
    padding: 15px 20px;
    background: rgba(0, 0, 0, 0.7);
    color: #fff;
    font-size: 16px;
    line-height: 1.5;
    text-align: center;
    border-radius: 4px;
    max-width: 90vw;
    word-wrap: break-word;
}

.tsv-lightbox-caption:empty {
    display: none;
}

/* ========================================
   5. NAVIGATION BUTTONS (PREV/NEXT)
   ======================================== */
.tsv-lightbox-prev,
.tsv-lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10001;
    outline: none;
}

.tsv-lightbox-prev:hover,
.tsv-lightbox-next:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.6);
}

.tsv-lightbox-prev:focus,
.tsv-lightbox-next:focus {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

.tsv-lightbox-prev {
    left: 20px;
}

.tsv-lightbox-next {
    right: 20px;
}

/* Pfeil-Icons mit CSS */
.tsv-lightbox-prev::before,
.tsv-lightbox-next::before {
    content: '';
    width: 12px;
    height: 12px;
    border: solid #fff;
    border-width: 0 3px 3px 0;
    display: inline-block;
}

.tsv-lightbox-prev::before {
    transform: rotate(135deg);
    margin-left: 4px;
}

.tsv-lightbox-next::before {
    transform: rotate(-45deg);
    margin-right: 4px;
}

/* ========================================
   6. CLOSE BUTTON
   ======================================== */
.tsv-lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 10002;
    outline: none;
}

.tsv-lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.6);
    transform: rotate(90deg);
}

.tsv-lightbox-close:focus {
    outline: 2px solid #fff;
    outline-offset: 2px;
}

/* X-Symbol mit CSS */
.tsv-lightbox-close::before,
.tsv-lightbox-close::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 2px;
    background: #fff;
}

.tsv-lightbox-close::before {
    transform: rotate(45deg);
}

.tsv-lightbox-close::after {
    transform: rotate(-45deg);
}

/* ========================================
   7. BODY SCROLL LOCK
   ======================================== */
body.tsv-lightbox-open {
    overflow: hidden;
}

/* ========================================
   8. MOBILE OPTIMIERUNG
   ======================================== */
@media (max-width: 768px) {
    .tsv-lightbox-modal {
        padding: 10px;
    }

    .tsv-lightbox-prev,
    .tsv-lightbox-next {
        width: 44px;
        height: 44px;
    }

    .tsv-lightbox-prev {
        left: 10px;
    }

    .tsv-lightbox-next {
        right: 10px;
    }

    .tsv-lightbox-close {
        top: 10px;
        right: 10px;
        width: 36px;
        height: 36px;
    }

    .tsv-lightbox-caption {
        font-size: 14px;
        padding: 10px 15px;
        margin-top: 15px;
    }

    .tsv-lightbox-image {
        max-height: calc(90vh - 60px);
    }
}

/* Sehr kleine Displays */
@media (max-width: 480px) {
    .tsv-lightbox-prev::before,
    .tsv-lightbox-next::before {
        width: 10px;
        height: 10px;
        border-width: 0 2px 2px 0;
    }

    .tsv-lightbox-close::before,
    .tsv-lightbox-close::after {
        width: 16px;
    }
}

/* Touch-Geräte: Größere Hit-Areas */
@media (hover: none) and (pointer: coarse) {
    .tsv-lightbox-prev,
    .tsv-lightbox-next {
        width: 50px;
        height: 50px;
    }

    .tsv-lightbox-close {
        width: 44px;
        height: 44px;
    }
}

/* ========================================
   9. ACCESSIBILITY
   ======================================== */
@media (prefers-reduced-motion: reduce) {
    .tsv-lightbox-overlay,
    .tsv-lightbox-modal,
    .tsv-lightbox-image,
    .tsv-lightbox-prev,
    .tsv-lightbox-next,
    .tsv-lightbox-close {
        transition: none;
    }
}

/* ========================================
   10. LOADING STATE (optional für zukünftige Erweiterungen)
   ======================================== */
.tsv-lightbox-loading .tsv-lightbox-image {
    opacity: 0.3;
}