.viewer-container {
    max-width: 800px;
    margin: 1rem auto;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--preview-bg);
    text-align: center;
}

.drop-zone {
    padding: 4rem 2rem;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-color);
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.drop-zone:hover, .drop-zone.dragover {
    background-color: var(--preview-bg);
    border-color: var(--accent-color);
}

.drop-zone-icon {
    font-size: 3rem;
    pointer-events: none;
}

.drop-zone-text {
    color: var(--text-color);
    font-size: 1.1rem;
    font-weight: 500;
    pointer-events: none;
    line-height: 1.5;
}

.hidden {
    display: none !important;
}

#image-preview-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    width: 100%;
}

.preview-stage {
    position: relative;
    width: 100%;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    overflow: hidden; 
}

.image-wrapper {
    width: 100%;
    height: 60vh;
    padding: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden; 
}

.image-wrapper.zoomed {
    overflow: auto; 
    align-items: flex-start; 
    justify-content: flex-start;
    padding: 0; 
}

#image-preview {
    max-width: 100%;
    max-height: 100%; 
    object-fit: contain; 
    border-radius: 2px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.image-wrapper.zoomed #image-preview {
    max-width: none;
    max-height: none;
    object-fit: none;
}

.zoom-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 20;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    border: none;
    border-radius: 4px;
    width: 36px;
    height: 36px;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background 0.2s ease;
}

.zoom-btn:hover {
    background: rgba(0, 0, 0, 0.85);
}

.minimap {
    position: absolute;
    bottom: 10px;
    left: 10px;
    width: 140px;
    background: rgba(0, 0, 0, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 4px;
    z-index: 20;
    overflow: hidden;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
}

#minimap-img {
    width: 100%;
    height: auto;
    display: block;
    opacity: 0.6;
}

#minimap-indicator {
    position: absolute;
    top: 0;
    left: 0;
    border: 1.5px solid #fff;
    background: rgba(255, 255, 255, 0.15);
    box-sizing: border-box;
    pointer-events: none;
}

.file-name-label {
    color: var(--label-text);
    font-size: 1.05rem;
    font-weight: 600;
    word-break: break-all;
    margin-bottom: -0.5rem; /* pull up metadata slightly */
}

.btn {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: 4px;
    background-color: var(--accent-color);
    color: #fff;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: opacity 0.2s;
}

.btn:hover {
    opacity: 0.85;
}

body.dark-mode .btn {
    color: var(--bg-color-dark);
}

.format-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 1rem;
    padding: 2rem;
    color: var(--text-color);
}

.error-icon {
    font-size: 3rem;
}

/* Progress Bar & Metadata Styles */
.progress-container {
    width: 100%;
    max-width: 400px;
    margin: 0.5rem auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.progress-bar-bg {
    width: 100%;
    height: 8px;
    background-color: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    width: 0%;
    background-color: var(--accent-color);
    transition: width 0.4s ease;
}

.progress-text {
    font-size: 0.85rem;
    color: var(--label-text);
    margin: 0;
}

.file-meta-label {
    font-size: 0.9rem;
    color: var(--text-color);
    opacity: 0.85;
    line-height: 1.6;
    margin-top: 0;
}