/* ==========================================================================
   PDF Merger Tool - Additional Styles
   ========================================================================== */

/* ==========================================================================
   File List Container
   ========================================================================== */

.file-list-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.file-list-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.file-list-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.reorder-hint {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ==========================================================================
   File List
   ========================================================================== */

.file-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    min-height: 200px;
}

/* File Item */
.file-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: grab;
}

.file-item:hover {
    border-color: var(--border-light);
    background: var(--bg-card-hover);
}

.file-item.dragging {
    opacity: 0.5;
    border-color: var(--accent-primary);
    background: rgba(0, 212, 255, 0.05);
}

.file-item.drag-over {
    border-color: var(--accent-primary);
    transform: translateY(2px);
}

/* Drag Handle */
.drag-handle {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    cursor: grab;
    padding: var(--spacing-xs);
}

.drag-handle:active {
    cursor: grabbing;
}

.drag-handle svg {
    pointer-events: none;
}

/* File Number */
.file-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    flex-shrink: 0;
}

/* File Icon */
.file-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(239, 68, 68, 0.1);
    border-radius: var(--radius-md);
    color: #ef4444;
    flex-shrink: 0;
}

/* File Info */
.file-info {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.file-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.file-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Remove Button */
.file-remove {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.file-remove:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

/* ==========================================================================
   File List Summary
   ========================================================================== */

.file-list-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    margin-top: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.summary-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.summary-value {
    font-weight: 600;
    color: var(--text-primary);
}

/* ==========================================================================
   Download Section
   ========================================================================== */

.download-section {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
}

.download-content {
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    max-width: 500px;
    width: 100%;
}

.download-icon {
    color: var(--success);
    margin-bottom: var(--spacing-lg);
}

.download-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.download-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.download-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.filename-input-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
}

.filename-input {
    width: 200px;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-right: none;
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    text-align: right;
}

.filename-input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.filename-extension {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-left: none;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

/* ==========================================================================
   Loading State
   ========================================================================== */

.file-item.loading {
    opacity: 0.6;
}

.file-item.loading .file-meta {
    color: var(--accent-primary);
}

/* Spinner Animation */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.spinner {
    animation: spin 1s linear infinite;
}

/* ==========================================================================
   Drop Zone Indicator
   ========================================================================== */

.file-list.drag-active {
    position: relative;
}

.file-list.drag-active::after {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px dashed var(--accent-primary);
    border-radius: var(--radius-md);
    background: rgba(0, 212, 255, 0.05);
    pointer-events: none;
}

/* ==========================================================================
   Empty State
   ========================================================================== */

.file-list-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    color: var(--text-muted);
    text-align: center;
}

.file-list-empty svg {
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 768px) {
    .file-list-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    .file-item {
        padding: var(--spacing-sm);
        gap: var(--spacing-sm);
    }

    .file-icon {
        width: 32px;
        height: 32px;
    }

    .file-number {
        width: 24px;
        height: 24px;
        font-size: 0.75rem;
    }

    .file-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }

    .filename-input {
        width: 150px;
    }

    .download-content {
        padding: var(--spacing-lg);
    }

    .file-list-summary {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .drag-handle {
        display: none;
    }

    .file-name {
        font-size: 0.875rem;
    }
}