/* =========================================================
   MASTER CONVERTER SUITE — AI Tools CSS Extensions
   ========================================================= */

/* --- 1. AI Tool Grid Landing Page --- */
.ai-tool-grid {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-xl) var(--space-md);
    animation: fadeIn 0.4s ease both;
}

.ai-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--space-md);
    width: 100%;
    margin-top: var(--space-lg);
}

.ai-card {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    height: 100%;
}

.ai-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--tool-color, var(--color-accent-blue));
    opacity: 0.8;
}

.ai-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-border-hover);
    background: var(--color-bg-hover);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), 0 0 20px color-mix(in srgb, var(--tool-color, var(--color-accent-blue)) 20%, transparent);
}

.ai-card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: color-mix(in srgb, var(--tool-color, var(--color-accent-blue)) 12%, transparent);
    color: var(--tool-color, var(--color-accent-blue));
    margin-bottom: var(--space-md);
    transition: transform var(--transition-fast);
}

.ai-card:hover .ai-card-icon {
    transform: scale(1.1);
}

.ai-card-name {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
}

.ai-card-desc {
    font-size: 0.82rem;
    color: var(--color-text-secondary);
    line-height: 1.45;
}

.ai-pin-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    z-index: 2;
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md, 8px);
    font-size: 12px;
    line-height: 1;
    cursor: pointer;
    color: var(--color-text-secondary);
}
.ai-pin-btn:hover { border-color: var(--color-accent-purple); color: var(--color-text-primary); }
.ai-pin-btn.pinned { background: var(--color-accent-purple); border-color: var(--color-accent-purple); color: #fff; }
.ai-pinned-section { margin-bottom: var(--space-lg); }
.ai-pinned-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-2);
    padding: var(--space-3) var(--space-3) 0;
    border-top: 1px solid var(--color-accent-purple);
}

/* --- 2. AI Workspace Layout --- */
.ai-workspace {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-lg) var(--space-md);
    animation: fadeIn 0.4s ease both;
}

/* AI Drop Zone */
.ai-drop-zone {
    border: 2px dashed color-mix(in srgb, var(--tool-color, var(--color-accent-blue)) 25%, transparent);
    border-radius: var(--radius-xl);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    min-height: 220px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    margin-bottom: var(--space-lg);
}

.ai-drop-zone:hover,
.ai-drop-zone.drag-over {
    border-color: var(--tool-color, var(--color-accent-blue));
    background: var(--color-bg-hover);
    box-shadow: 0 0 20px color-mix(in srgb, var(--tool-color, var(--color-accent-blue)) 20%, transparent);
}

.ai-drop-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-secondary);
    padding: var(--space-lg);
}

.ai-drop-content svg {
    color: var(--tool-color, var(--color-accent-blue));
    opacity: 0.85;
}

.ai-drop-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.ai-drop-subtitle {
    font-size: 0.85rem;
}

/* --- 3. Model Loading Banner --- */
.model-loading-banner {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-lg);
    animation: pulseBorder 2s infinite ease-in-out;
}

@keyframes pulseBorder {
    0%, 100% { border-color: rgba(255, 255, 255, 0.08); }
    50% { border-color: var(--tool-color, var(--color-accent-blue)); }
}

.loader-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid rgba(255, 255, 255, 0.05);
    border-top: 3px solid var(--tool-color, var(--color-accent-blue));
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    flex-shrink: 0;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.model-loading-info {
    flex: 1;
}

.model-loading-title {
    font-weight: 600;
    color: var(--color-text-primary);
    font-size: 0.95rem;
}

.model-loading-desc {
    font-size: 0.78rem;
    color: var(--color-text-secondary);
    margin-top: 2px;
}

/* --- 4. Live Microphone (Voice-to-Text) --- */
.voice-input-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--color-bg-card);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    width: 100%;
}

.voice-controls-row {
    width: 100%;
    max-width: 320px;
    margin-bottom: var(--space-xl);
}

.mic-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-md) 0;
}

.mic-button {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: none;
    background: var(--gradient-accent);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 0 0 rgba(139, 92, 246, 0.4);
    transition: all var(--transition-base);
}

.mic-button:hover {
    transform: scale(1.05);
}

.mic-button.recording {
    background: #ef4444;
    animation: micPulse 1.6s infinite;
    box-shadow: 0 0 25px rgba(239, 68, 68, 0.5);
}

@keyframes micPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.5);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(239, 68, 68, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(239, 68, 68, 0);
    }
}

.mic-status {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    letter-spacing: 0.02em;
}

.waveform-animation {
    display: flex;
    align-items: center;
    gap: 4px;
    height: 32px;
}

.waveform-animation span {
    width: 4px;
    height: 8px;
    background-color: #ef4444;
    border-radius: 2px;
    animation: wave 1.2s infinite ease-in-out;
}

.waveform-animation span:nth-child(2) { animation-delay: 0.15s; height: 16px; }
.waveform-animation span:nth-child(3) { animation-delay: 0.3s; height: 24px; }
.waveform-animation span:nth-child(4) { animation-delay: 0.45s; height: 14px; }
.waveform-animation span:nth-child(5) { animation-delay: 0.6s; height: 6px; }

@keyframes wave {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(2.2); }
}

/* --- 5. AI File Cards (Batch Processing list) --- */
.ai-file-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2);
    width: 100%;
}

.ai-file-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: var(--radius-md);
    gap: var(--space-3);
}

.ai-file-info {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-width: 0;
    flex: 1;
}

.ai-file-icon {
    color: var(--tool-color, var(--color-accent-blue));
    flex-shrink: 0;
}

.ai-file-name {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ai-file-size {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.ai-file-status-badge {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    text-transform: uppercase;
}

.ai-file-status-badge.pending {
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-text-secondary);
}

.ai-file-status-badge.processing {
    background: rgba(59, 130, 246, 0.15);
    color: var(--color-accent-blue-light);
}

.ai-file-status-badge.completed {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-accent-green);
}

.ai-file-status-badge.failed {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-accent-red);
}

.ai-file-remove {
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: color var(--transition-fast);
    padding: 4px;
}

.ai-file-remove:hover {
    color: var(--color-accent-red);
}

/* --- 6. Output Panel & Action Layout --- */
.ai-results-panel {
    background: var(--color-bg-card);
    border: var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-top: var(--space-lg);
}

.ai-results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.ai-results-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.ai-results-actions {
    display: flex;
    gap: var(--space-2);
}

/* Background Remover Output Gallery */
.bg-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-md);
}

.bg-item-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.bg-comparison-container {
    position: relative;
    aspect-ratio: 4/3;
    width: 100%;
    background: #090e1a;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.bg-original-preview,
.bg-processed-preview {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: opacity 0.25s ease;
}

/* Transparent checkerboard background for transparent PNG output */
.bg-processed-preview {
    background-image: 
        linear-gradient(45deg, #161e33 25%, transparent 25%),
        linear-gradient(-45deg, #161e33 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #161e33 75%),
        linear-gradient(-45deg, transparent 75%, #161e33 75%);
    background-size: 16px 16px;
    background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
}

.bg-comparison-slider {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    padding: 6px var(--space-3);
    display: flex;
    justify-content: space-between;
    font-size: 0.72rem;
    color: var(--color-text-secondary);
}

.bg-item-footer {
    padding: var(--space-3);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
}

.bg-item-name {
    font-size: 0.8rem;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
}

/* OCR Results Layout */
.ocr-results-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.ocr-result-item {
    border: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(255, 255, 255, 0.01);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.ocr-result-header {
    padding: var(--space-3) var(--space-4);
    background: rgba(255, 255, 255, 0.03);
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.ocr-result-header:hover {
    background: rgba(255, 255, 255, 0.06);
}

.ocr-result-title-group {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    min-width: 0;
}

.ocr-result-title {
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ocr-badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    background: rgba(59, 130, 246, 0.15);
    color: var(--color-accent-blue-light);
}

.ocr-result-body {
    padding: var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.ocr-textarea {
    width: 100%;
    height: 150px;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    padding: var(--space-3);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: 0.88rem;
    resize: vertical;
    line-height: 1.5;
}

.ocr-textarea:focus {
    border-color: var(--color-accent-blue);
    outline: none;
}

/* Voice and Audio/Video Transcripts */
.transcript-box {
    width: 100%;
    min-height: 200px;
    max-height: 450px;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.07);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    color: var(--color-text-primary);
    font-size: 0.95rem;
    line-height: 1.6;
    overflow-y: auto;
    white-space: pre-wrap;
    font-family: var(--font-primary);
}

.transcript-interim {
    color: var(--color-text-muted);
    font-style: italic;
}

/* Media results list (Whisper transcript with timestamps) */
.media-results-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.media-result-file-card {
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    padding: var(--space-4);
}

.media-result-file-name {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: var(--space-3);
    color: var(--color-accent-amber);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.whisper-chunk-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.whisper-chunk {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.whisper-chunk:hover {
    background: rgba(255, 255, 255, 0.03);
}

.whisper-time {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--color-text-muted);
    width: 80px;
    flex-shrink: 0;
    padding-top: 2px;
}

.whisper-text {
    font-size: 0.88rem;
    color: var(--color-text-primary);
    line-height: 1.5;
}

/* Responsive Grid Tweaks */
@media (max-width: 640px) {
    .ai-cards {
        grid-template-columns: 1fr;
    }
    
    .ai-results-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .ai-results-actions {
        width: 100%;
        margin-top: var(--space-2);
    }
    
    .ai-results-actions button {
        flex: 1;
    }
}