/**
 * NB AI Tab - Custom Styles
 */

/* Main Tab Container */
#tab-nb-ai {
    display: none;
    flex-direction: column;
    height: 100%;
}

#tab-nb-ai.active {
    display: flex;
}

/* Scroll Area */
#tab-nb-ai .tab-scroll {
    flex: 1;
    overflow-y: auto;
    padding: 10px 15px;
}

/* Content Layout */
.nb-ai-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nb-ai-intro p {
    font-size: 13px;
    color: #666;
    line-height: 1.4;
}

.nb-ai-input-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 3px;
    color: #333;
}

/* Input Overrides */
.nb-ai-input {
    width: 100% !important;
    background: #fff !important;
}

/* Actions */
.nb-ai-actions {
    margin: 5px 0;
}

.nb-ai-generate-btn {
    width: 100%;
    justify-content: center;
}

/* Capture Design Area */
.nb-ai-capture-area {
    margin: 0;
    padding: 0;
    background: transparent;
    border: none;
}

.nb-ai-capture-btns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4px;
    margin-bottom: 6px;
}

.nb-ai-capture-btn {
    width: 100% !important;
    min-width: 0;
    margin: 0 !important;
    padding: 0 4px !important;
    background: #4a5568 !important;
    color: white !important;
    font-size: 10px !important;
    font-weight: 600 !important;
    text-transform: uppercase;
    height: 28px !important;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    border-radius: 4px !important;
    transition: all 0.2s ease !important;
    border: none !important;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.nb-ai-capture-btn:hover {
    background: #2d3748 !important;
    transform: translateY(-1px);
}

.nb-ai-annotate-btn {
    background: #b45309 !important;
}

.nb-ai-annotate-btn:hover {
    background: #92400e !important;
}

/* Upload Progress */
.nb-ai-upload-progress {
    width: 100%;
    margin-bottom: 8px;
    background: #f1f5f9;
    padding: 8px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nb-ai-progress-bar {
    flex: 1;
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
    overflow: hidden;
}

.nb-ai-progress-inner {
    height: 100%;
    background: #3b82f6;
    width: 0%;
    transition: width 0.3s ease;
}

.nb-ai-progress-text {
    font-size: 11px;
    font-weight: bold;
    color: #475569;
    min-width: 30px;
    text-align: right;
}

.nb-ai-reference-preview {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    margin-bottom: 8px;
    width: 100%;
}

.nb-ai-ref-container {
    position: relative;
    width: 100%;
    max-height: 250px;
    border: 2px solid #3b82f6;
    border-radius: 8px;
    overflow: hidden;
    background: white;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
}

.nb-ai-ref-container img {
    max-width: 100%;
    max-height: 250px;
    object-fit: contain;
    background-color: #fff;
    background-image:
        linear-gradient(45deg, #eee 25%, transparent 25%),
        linear-gradient(-45deg, #eee 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #eee 75%),
        linear-gradient(-45deg, transparent 75%, #eee 75%);
    background-size: 12px 12px;
    background-position: 0 0, 0 6px, 6px -6px, -6px 0px;
}

.nb-ai-remove-ref {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(239, 68, 68, 0.9) !important;
    color: white !important;
    border: 2px solid white !important;
    width: 26px !important;
    height: 26px !important;
    padding: 0 !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    cursor: pointer;
    font-size: 12px !important;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    z-index: 5;
    transition: transform 0.2s ease;
}

.nb-ai-remove-ref:hover {
    transform: scale(1.1);
    background: #ef4444 !important;
}

/* Result Area */
.nb-ai-result-area {
    margin-top: 10px;
    border-top: 1px solid #eee;
    padding-top: 10px;
}

.nb-ai-result-label {
    font-size: 11px;
    font-weight: bold;
    text-transform: uppercase;
    color: #999;
    margin-bottom: 10px;
    letter-spacing: 0.5px;
}

#nb-ai-result-container {
    min-height: 150px;
    background: #fdfdfd;
    border: 1px dashed #dedede;
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #aaa;
    font-size: 12px;
    padding: 10px;
}

.nb-ai-results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    width: 100%;
}

.nb-ai-result-item {
    position: relative;
    border-radius: 4px;
    overflow: hidden;
    background: #eee;
    aspect-ratio: auto;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.nb-ai-result-item:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-color: #10b981;
}

.nb-ai-clickable-result {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* Navigation Icon Customization */
#nav-nb-ai svg {
    fill: #888;
    transition: all 0.2s ease;
}

#nav-nb-ai:hover svg,
#nav-nb-ai.active svg {
    fill: #10b981;
    /* Premium emerald color for AI */
}

/* ===== Additional Images (auto-routed thumbnails under main) ===== */

/* "Main Image" label on reference preview */
.nb-ai-ref-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(16, 185, 129, 0.9);
    color: #fff;
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: center;
    padding: 2px 0;
}

.nb-ai-additional-strip {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    padding: 6px 0 2px;
    scrollbar-width: thin;
    scrollbar-color: #cbd5e1 transparent;
}

.nb-ai-additional-strip::-webkit-scrollbar {
    height: 4px;
}

.nb-ai-additional-strip::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 2px;
}

.nb-ai-additional-thumb {
    position: relative;
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: 6px;
    overflow: hidden;
    border: 2px solid #e2e8f0;
    background: #fff;
    transition: border-color 0.2s ease;
}

.nb-ai-additional-thumb:hover {
    border-color: #3b82f6;
}

.nb-ai-additional-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.nb-ai-additional-badge {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(59, 130, 246, 0.9);
    color: #fff;
    font-size: 8px;
    font-weight: 700;
    text-align: center;
    padding: 1px 0;
    letter-spacing: 0.5px;
}

.nb-ai-additional-remove {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 16px !important;
    height: 16px !important;
    padding: 0 !important;
    background: rgba(239, 68, 68, 0.85) !important;
    color: white !important;
    border: 1.5px solid white !important;
    border-radius: 50% !important;
    font-size: 10px !important;
    line-height: 1 !important;
    cursor: pointer;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    opacity: 0;
    transition: opacity 0.15s ease;
}

.nb-ai-additional-thumb:hover .nb-ai-additional-remove {
    opacity: 1;
}

/* Image Tag Picker (above prompt textarea) */

.nb-ai-img-picker {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
    margin-bottom: 4px;
}

.nb-ai-img-picker-label {
    font-size: 10px;
    color: #94a3b8;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.nb-ai-img-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px 2px 2px !important;
    background: #eff6ff !important;
    border: 1.5px solid #93c5fd !important;
    border-radius: 20px !important;
    cursor: pointer;
    font-size: 10px !important;
    font-weight: 700 !important;
    color: #2563eb !important;
    height: auto !important;
}

.nb-ai-img-chip:hover {
    background: #dbeafe !important;
    border-color: #3b82f6 !important;
}

.nb-ai-chip-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid #bfdbfe;
}

/* Annotation guide (inline in the additional strip) */
.nb-ai-annotation-thumb-inline {
    border-color: #f59e0b !important;
}

.nb-ai-annotation-badge {
    background: rgba(245, 158, 11, 0.92) !important;
}

/* Lightbox Preview */
.nb-ai-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.9);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    cursor: zoom-out;
}

.nb-ai-lightbox-img {
    max-width: 90%;
    max-height: 90%;
    object-fit: contain;
    border-radius: 12px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    border: 4px solid rgba(255, 255, 255, 0.1);
    background: #000;
}

.nb-ai-lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 44px !important;
    height: 44px !important;
    background: rgba(255, 255, 255, 0.15) !important;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
    border-radius: 50% !important;
    color: #fff !important;
    font-size: 32px !important;
    line-height: 1 !important;
    cursor: pointer;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
}

.nb-ai-lightbox-close:hover {
    background: rgba(239, 68, 68, 0.8) !important;
}

/* ===== Continue Edit & Iteration History ===== */

.nb-ai-continue-btn {
    width: 100%;
    margin-top: 8px;
    padding: 10px 16px !important;
    background: linear-gradient(135deg, #01c4cc 0%, #0ea5e9 100%) !important;
    color: #fff !important;
    border: none !important;
    border-radius: 8px !important;
    font-size: 13px !important;
    font-weight: 700 !important;
    cursor: pointer;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 6px;
    box-shadow: 0 4px 12px rgba(1, 196, 204, 0.25);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.3px;
}

.nb-ai-continue-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 18px rgba(1, 196, 204, 0.35);
    background: linear-gradient(135deg, #01acb3 0%, #0284c7 100%) !important;
}

.nb-ai-continue-btn:active {
    transform: translateY(0);
}

.nb-ai-continue-btn svg {
    flex-shrink: 0;
}

.nb-ai-iteration-sep {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 14px 0 8px;
    width: 100%;
}

.nb-ai-iteration-sep::before,
.nb-ai-iteration-sep::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, transparent, #cbd5e1, transparent);
}

.nb-ai-iteration-label {
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    color: #94a3b8;
    white-space: nowrap;
}

.nb-ai-iter-remove-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #f1f5f9;
    color: #94a3b8;
    cursor: pointer;
    transition: all 0.2s ease;
}

.nb-ai-iter-remove-btn i {
    font-size: 10px;
}

.nb-ai-iter-remove-btn:hover {
    background: #fee2e2;
    color: #ef4444;
}

.nb-ai-loading-block {
    width: 100%;
    padding: 10px 0;
}

.nb-ai-iteration-block {
    width: 100%;
    margin-top: 4px;
    padding: 12px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
}

.nb-ai-iteration-block .nb-ai-reference-preview {
    margin-bottom: 8px;
}

.nb-ai-iteration-block .nb-ai-input-group {
    margin-bottom: 6px;
}

.nb-ai-iteration-block .nb-ai-generate-btn {
    margin-top: 4px;
}

.nb-ai-iteration-block .nb-ai-iter-result {
    margin-top: 8px;
}

.nb-ai-artwork-only-btn {
    background: #ff5722 !important;
}

.nb-ai-additional-thumb {
    position: relative;
}

.nb-ai-remove-thumb {
    position: absolute;
    top: -6px;
    right: -6px;
    width: 18px;
    height: 18px;
    background: #f44336;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 10px;
    opacity: 0;
    transition: opacity 0.2s;
    z-index: 10;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.nb-ai-additional-thumb:hover .nb-ai-remove-thumb {
    opacity: 1;
}

.nb-ai-remove-thumb i {
    font-size: 10px;
}