/* PDF Merger Specific Styles */

#pdf-merger-app {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    font-family: var(--font-family);
}


#files-preview-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 2rem;
    justify-content: center;
}

.pdf-preview-item {
    position: relative;
    width: 160px;
    text-align: center;
    background: var(--card-bg);
    padding: 1rem;
    border-radius: 10px;
    border: 1px solid var(--card-border);
    transition: transform 0.3s, box-shadow 0.3s;
}

.pdf-preview-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.pdf-preview-item canvas {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 0.5rem;
}

.pdf-preview-item p {
    font-size: 0.8rem;
    color: var(--text-color-light);
    word-break: break-all;
    height: 40px;
    overflow: hidden;
}

.pdf-preview-item .remove-btn {
    position: absolute;
    top: -10px;
    right: -10px;
    background: var(--primary-color);
    color: white;
    border: 2px solid var(--bg-color);
    border-radius: 50%;
    width: 28px;
    height: 28px;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s;
}

.pdf-preview-item .remove-btn:hover {
    transform: scale(1.1);
}

.options-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 2rem 0;
    padding: 1rem 1.5rem;
    background-color: var(--card-bg);
    border-radius: 10px;
    border: 1px solid var(--card-border);
}

.page-mode-toggle {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
}

.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--card-border);
    transition: .4s;
    background-image: none;
}

.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
}

input:checked+.slider {
    background: var(--primary-gradient);
    height: 27px;
}

input:checked+.slider:before {
    transform: translateX(22px);
}

.slider.round {
    border-radius: 34px;
    height: 27px;
}

.slider.round:before {
    border-radius: 50%;
}

#page-selection-area {
    margin-top: 1rem;
}

.pdf-page-container {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: var(--card-bg);
    border-radius: 10px;
    border: 1px solid var(--card-border);
}

.pdf-page-container h4 {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--primary-color);
}

.pages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1.5rem;
}

.page-item {
    position: relative;
    text-align: center;
    cursor: pointer;
    transition: transform 0.3s;
}

.page-item:hover {
    transform: scale(1.05);
}

.page-item canvas {
    width: 100%;
    height: auto;
    border: 2px solid var(--card-border);
    border-radius: 8px;
    transition: border-color 0.3s;
}

.page-item.selected canvas {
    border-color: var(--primary-color);
    box-shadow: 0 0 15px rgba(255, 77, 141, 0.3);
}

.page-item .page-number {
    font-size: 0.8rem;
    margin-top: 0.5rem;
    color: var(--text-color-light);
}

.page-item .selection-tick {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 24px;
    height: 24px;
    background: var(--primary-gradient);
    color: white;
    border-radius: 50%;
    border: 2px solid var(--bg-color);
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.page-item.selected .selection-tick {
    display: flex;
}

.fixed-bottom-bar {
    position: sticky;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: rgba(13, 13, 26, 0.8);
    backdrop-filter: blur(10px);
    padding: 1.5rem 0;
    text-align: center;
    box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    border-top: 1px solid var(--card-border);
}

.sortable-ghost {
    opacity: 0.4;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}