/**
 * Frontend styles for the AI Furniture Design Assistant
 * Optimized for compact, efficient user experience
 */

:root {
    --nestoryai-primary-color: #a56239;
    --nestoryai-primary-dark: #683220;
    --nestoryai-primary-light: rgba(165, 98, 57, 0.18);
    --nestoryai-secondary-color: #ac9b7e;
    --nestoryai-bg-color: #dbd2be;
    --nestoryai-bg-light: rgba(219, 210, 190, 0.7);
    --nestoryai-border-color: rgba(104, 50, 32, 0.28);
    --nestoryai-border-subtle: rgba(104, 50, 32, 0.18);
    --nestoryai-shadow-color: rgba(104, 50, 32, 0.12);
    --nestoryai-shadow-strong: rgba(104, 50, 32, 0.2);
    --nestoryai-text-color: #2f1b12;
    --nestoryai-text-muted: rgba(47, 27, 18, 0.7);
}

/* Design page layout - 更紧凑的容器 */
.ai-design-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 1.25rem;
    color: var(--nestoryai-text-color);
}

/* Canvas area - 优化尺寸 */
.ai-design-canvas-container {
    width: 100%;
    height: 420px;
    border: 1px solid var(--nestoryai-border-color);
    position: relative;
    margin-bottom: 1.25rem;
    background-color: var(--nestoryai-bg-light);
    border-radius: 6px;
}

.ai-credit-panel {
    margin-bottom: 1rem;
    padding: 0.75rem 1rem;
    background-color: var(--nestoryai-bg-light);
    border: 1px solid var(--nestoryai-border-color);
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.ai-credit-panel .credit-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--nestoryai-primary-dark);
    text-transform: uppercase;
}

.ai-credit-panel .credit-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--nestoryai-primary-color);
}

.ai-credit-warning {
    display: none;
    margin-bottom: 1rem;
    color: #d64f2a;
    font-size: 0.9rem;
}

.ai-credit-warning.is-visible {
    display: block;
}

.ai-design-canvas {
    width: 100%;
    height: 100%;
}

/* Canvas toolbar - 更紧凑 */
.canvas-toolbar {
    margin-bottom: 0.75rem;
    display: flex;
    gap: 0.625rem;
    flex-wrap: wrap;
}

.toolbar-btn {
    background-color: var(--nestoryai-bg-light);
    border: 1px solid var(--nestoryai-border-color);
    padding: 0.5rem 0.875rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8125rem;
    transition: all 0.2s ease;
    font-weight: 500;
    color: var(--nestoryai-primary-dark);
}

.toolbar-btn:hover {
    background-color: var(--nestoryai-primary-light);
    border-color: var(--nestoryai-primary-color);
    color: #fff;
    transform: translateY(-1px);
}

/* Furniture selection panel - 更紧凑 */
.furniture-selection-panel {
    margin-top: 1.25rem;
}

.furniture-items-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.875rem;
    margin-top: 0.75rem;
}

.furniture-item {
    width: 100px;
    height: 100px;
    border: 2px solid var(--nestoryai-border-subtle);
    border-radius: 6px;
    cursor: pointer;
    overflow: hidden;
    position: relative;
    transition: all 0.2s ease;
}

.furniture-item:hover {
    border-color: var(--nestoryai-primary-color);
    transform: translateY(-2px);
    box-shadow: 0 3px 6px var(--nestoryai-shadow-color);
}

.furniture-item.selected {
    border-color: var(--nestoryai-primary-color);
    box-shadow: 0 0 0 2px rgba(165, 98, 57, 0.35);
}

.furniture-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.furniture-name {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.75);
    color: white;
    font-size: 0.6875rem;
    padding: 0.25rem;
    text-align: center;
    font-weight: 500;
}

/* Upload areas - 更紧凑 */
.image-upload-area, .furniture-upload-area {
    border: 2px dashed var(--nestoryai-border-color);
    padding: 1.875rem;
    text-align: center;
    margin-bottom: 1.25rem;
    border-radius: 6px;
    transition: all 0.25s ease;
    position: relative;
    min-height: 130px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-upload-area:hover, .furniture-upload-area:hover {
    border-color: var(--nestoryai-primary-color);
    transform: translateY(-1px);
    box-shadow: 0 3px 10px var(--nestoryai-shadow-color);
}

.image-upload-area.uploading, .furniture-upload-area.uploading {
    border-color: var(--nestoryai-primary-color);
    background-color: rgba(219, 210, 190, 0.85);
    border-style: solid;
    animation: uploadPulse 2s ease-in-out infinite;
}

/* Upload progress indicator */
.upload-progress {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 15px;
    padding: 20px;
}

.uploading .upload-progress {
    display: flex;
}

.uploading .upload-default-content {
    display: none;
}

.upload-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(219, 210, 190, 0.65);
    border-top: 4px solid var(--nestoryai-primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.upload-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--nestoryai-primary-color);
    margin-bottom: 5px;
}

.upload-subtext {
    font-size: 14px;
    color: var(--nestoryai-text-muted);
    opacity: 0.8;
}

/* Upload animations */
@keyframes uploadPulse {
    0%, 100% {
        background-color: rgba(219, 210, 190, 0.85);
        border-color: var(--nestoryai-primary-color);
    }
    50% {
        background-color: rgba(172, 155, 126, 0.5);
        border-color: var(--nestoryai-primary-dark);
    }
}

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

/* Upload success state */
.image-upload-area.upload-success, .furniture-upload-area.upload-success {
    border-color: #4caf50;
    background-color: rgba(172, 155, 126, 0.35);
    animation: none;
}

.upload-success .upload-progress {
    display: flex;
}

.upload-success .upload-spinner {
    display: none;
}

.upload-success .upload-text {
    color: #4caf50;
}

.upload-check-icon {
    width: 40px;
    height: 40px;
    border: 4px solid #4caf50;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #4caf50;
    animation: checkmark 0.5s ease-in-out;
}

@keyframes checkmark {
    0% {
        transform: scale(0);
        opacity: 0;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Action buttons - 更紧凑 */
.design-actions {
    margin: 1.25rem 0;
    text-align: center;
}

.generate-design-btn {
    background-color: var(--nestoryai-primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 0.9375rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
    box-shadow: 0 1px 3px var(--nestoryai-shadow-color);
}

.generate-design-btn:hover:not(:disabled) {
    background-color: var(--nestoryai-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px var(--nestoryai-shadow-strong);
}

.generate-design-btn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
    box-shadow: none;
}

/* Loading indicator - 更紧凑 */
.loading-indicator {
    display: none;
    text-align: center;
    margin: 1.25rem 0;
    padding: 1.25rem;
    border: 1px solid var(--nestoryai-border-color);
    border-radius: 6px;
    background-color: var(--nestoryai-bg-light);
}

.loading-spinner {
    border: 3px solid rgba(219, 210, 190, 0.65);
    border-top: 3px solid var(--nestoryai-primary-color);
    border-radius: 50%;
    width: 28px;
    height: 28px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

.loading-subtext {
    font-size: 0.8125rem;
    color: var(--nestoryai-text-muted);
    margin-top: 0.75rem;
}

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

/* Design result container - 更紧凑 */
.design-result-container {
    margin-top: 1.875rem;
    padding: 1.25rem;
    border: 1px solid var(--nestoryai-border-color);
    border-radius: 6px;
    background-color: var(--nestoryai-bg-light);
    display: none;
}

.design-result-container img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    margin: 0.75rem 0;
}

.result-actions {
    margin-top: 1rem;
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Design history - 更紧凑 */
.design-history-container {
    margin-top: 2.5rem;
}

.design-history-title {
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    font-weight: 600;
}

.design-history-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
}

.design-history-item {
    border: 1px solid var(--nestoryai-border-color);
    border-radius: 6px;
    overflow: hidden;
    transition: all 0.2s ease;
}

.design-history-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 3px 8px var(--nestoryai-shadow-color);
}

.design-history-item img {
    width: 100%;
    height: 140px;
    object-fit: cover;
}

.design-history-item-info {
    padding: 0.75rem;
}

.design-history-item-date {
    font-size: 0.6875rem;
    color: var(--nestoryai-text-muted);
    margin-bottom: 0.375rem;
}

.design-history-item-status {
    font-size: 0.75rem;
    color: var(--nestoryai-primary-dark);
    font-weight: bold;
    margin-bottom: 0.625rem;
}

.view-design-btn {
    background-color: var(--nestoryai-primary-color);
    color: white;
    border: none;
    padding: 0.5rem 0.875rem;
    font-size: 0.75rem;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
    font-weight: 500;
    transition: all 0.2s ease;
}

.view-design-btn:hover:not(:disabled) {
    background-color: var(--nestoryai-primary-dark);
    transform: translateY(-1px);
}

.view-design-btn.disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

/* Responsive design - 优化移动端 */
@media (max-width: 768px) {
    .ai-design-container {
        padding: 0.875rem;
    }

    .furniture-item {
        width: 85px;
        height: 85px;
    }

    .ai-design-canvas-container {
        height: 320px;
    }

    .canvas-toolbar {
        flex-direction: column;
        gap: 0.5rem;
    }

    .toolbar-btn {
        width: 100%;
    }

    .design-history-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 0.875rem;
    }

    .design-history-item img {
        height: 120px;
    }

    .generate-design-btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .ai-design-container {
        padding: 0.75rem;
    }

    .furniture-items-container {
        gap: 0.625rem;
    }

    .furniture-item {
        width: 75px;
        height: 75px;
    }

    .design-history-grid {
        grid-template-columns: 1fr 1fr;
    }
}