/**
 * FileHubKit Tool Interfaces & Controls Stylesheet
 */

/* Tool Hero Header */
.tool-header-section {
    padding: 3rem 0 2rem;
    text-align: center;
    background: linear-gradient(180deg, rgba(79, 70, 229, 0.05) 0%, transparent 100%);
}

.tool-h1 {
    font-size: 2.35rem;
    margin-bottom: 0.75rem;
}

.tool-intro {
    font-size: 1.1rem;
    max-width: 680px;
    margin: 0 auto;
    color: var(--text-secondary);
}

/* Tool Interface Box */
.tool-interface-wrapper {
    margin: 1.5rem auto 3.5rem;
    max-width: 960px;
}

.tool-workspace {
    background: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-xl);
    position: relative;
}

/* Dropzone */
.dropzone-container {
    border: 2px dashed #cbd5e1;
    border-radius: var(--radius-lg);
    padding: 3.5rem 1.5rem;
    text-align: center;
    background-color: var(--surface-alt);
    cursor: pointer;
    transition: var(--transition);
    outline: none;
}

.dropzone-container:hover, .dropzone-container.drag-over {
    border-color: var(--primary);
    background-color: var(--primary-light);
}

.dropzone-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.25rem;
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
}

.dropzone-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.dropzone-hint {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.dropzone-btn {
    pointer-events: none; /* Clicking drops through to container or input */
}

.file-input-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Tool Active Workspace */
.tool-active-area {
    display: none;
}

.tool-active-area.active {
    display: block;
}

/* File Preview Bar */
.file-info-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--surface-alt);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    margin-bottom: 1.75rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.file-info-meta {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.file-icon-badge {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.8rem;
}

.file-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
    word-break: break-all;
}

.file-size-badge {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.file-change-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 0.85rem;
    cursor: pointer;
    font-weight: 500;
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-sm);
}

.file-change-btn:hover {
    color: var(--danger);
    background: var(--danger-bg);
}

/* Dynamic Controls Panel */
.tool-controls-panel {
    background: var(--surface-alt);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.tool-controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    align-items: center;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.control-val-badge {
    font-size: 0.8rem;
    color: var(--primary);
    font-weight: 700;
}

.control-slider {
    width: 100%;
    accent-color: var(--primary);
    cursor: pointer;
    height: 6px;
    border-radius: var(--radius-full);
}

.control-input {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    font-size: 0.95rem;
    color: var(--text-primary);
}

.control-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    cursor: pointer;
    user-select: none;
    font-weight: 500;
}

/* Statistics Badges Grid */
.stats-badges-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
    text-align: center;
}

.stat-badge-box {
    background: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    padding: 1rem 0.5rem;
}

.stat-badge-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.stat-badge-value {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
}

.stat-saved-value {
    color: var(--success);
}

/* Comparison / Preview View */
.tool-split-view {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.preview-pane {
    background: var(--surface-alt);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    text-align: center;
}

.preview-pane-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.preview-image-box {
    min-height: 220px;
    max-height: 280px;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: #f1f5f9;
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    position: relative;
}

.preview-image-box img {
    max-height: 240px;
    max-width: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

/* Action Bar */
.tool-action-bar {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid var(--surface-border);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Processing Spinner / Loading State */
.processing-overlay {
    display: none;
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(4px);
    border-radius: var(--radius-xl);
    z-index: 50;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 1rem;
}

.processing-overlay.active {
    display: flex;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--primary-light);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.processing-text {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.1rem;
}

/* Error State */
.tool-error-alert {
    display: none;
    background: var(--danger-bg);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #991b1b;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    font-weight: 500;
}

.tool-error-alert.active {
    display: block;
}

/* Multi-file Queue (PDF Merge, JPG to PDF) */
.file-queue-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.file-queue-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--surface-alt);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    gap: 0.75rem;
}

.file-queue-item-drag {
    cursor: grab;
    color: var(--text-muted);
}

.file-queue-name {
    font-weight: 600;
    font-size: 0.9rem;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-queue-actions {
    display: flex;
    gap: 0.5rem;
}

.file-queue-btn {
    background: none;
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-sm);
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    cursor: pointer;
    background: var(--surface);
}

.file-queue-btn:hover {
    background: var(--surface-hover);
}

.file-queue-btn.danger:hover {
    color: var(--danger);
    border-color: var(--danger);
}

/* Tool Content Sections (SEO & Instructions) */
.tool-content-section {
    padding: 3rem 0;
    border-top: 1px solid var(--surface-border);
}

.tool-content-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
}

.content-block {
    margin-bottom: 2.5rem;
}

.content-block h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.content-block p, .content-block ul, .content-block ol {
    margin-bottom: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.content-block ul, .content-block ol {
    padding-left: 1.5rem;
}

.content-block li {
    margin-bottom: 0.5rem;
}

.tool-sidebar-card {
    background: var(--surface);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    margin-bottom: 1.75rem;
}

.sidebar-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.privacy-callout {
    background: var(--accent-light);
    border: 1px solid rgba(6, 182, 212, 0.25);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    margin-bottom: 2rem;
}

.privacy-callout-title {
    font-weight: 700;
    color: #0e7490;
    font-size: 0.95rem;
    margin-bottom: 0.35rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.privacy-callout p {
    font-size: 0.85rem;
    color: #155e75;
    margin: 0;
}

/* Word Counter UI */
.word-counter-textarea {
    width: 100%;
    min-height: 260px;
    padding: 1.25rem;
    font-size: 1.05rem;
    line-height: 1.7;
    border: 2px solid var(--surface-border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    color: var(--text-primary);
    outline: none;
    resize: vertical;
    transition: var(--transition);
}

.word-counter-textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.12);
}

.counter-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.counter-stat-card {
    background: var(--surface-alt);
    border: 1px solid var(--surface-border);
    border-radius: var(--radius-md);
    padding: 1rem;
    text-align: center;
}

.counter-stat-num {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--primary);
}

.counter-stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

@media (max-width: 768px) {
    .tool-workspace {
        padding: 1.25rem;
    }
    .stats-badges-grid {
        grid-template-columns: 1fr;
    }
    .tool-content-grid {
        grid-template-columns: 1fr;
    }
}