* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #8b5cf6;
    --background: #f8fafc;
    --surface: #ffffff;
    --border: #e2e8f0;
    --text: #1e293b;
    --text-secondary: #64748b;
    --success: #10b981;
    --error: #ef4444;
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--text);
    padding: 20px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Main Content */
.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

/* Panels */
.generator-panel,
.result-panel {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 30px;
    box-shadow: var(--shadow-lg);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.panel-header h2,
.result-panel h2 {
    font-size: 1.8rem;
    color: var(--text);
}

/* Model Select */
.model-select {
    padding: 10px 15px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    background: white;
    color: var(--text);
    cursor: pointer;
    transition: all 0.3s;
}

.model-select:hover {
    border-color: var(--primary);
}

.model-select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    margin-bottom: 20px;
    background: var(--background);
    transition: all 0.3s;
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-area.drag-over {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.upload-icon {
    margin-bottom: 15px;
}

.upload-icon svg {
    color: var(--primary);
}

.upload-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
}

.upload-hint {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.upload-format {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Image Preview */
.image-preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
    margin-bottom: 20px;
}

.preview-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.preview-item img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    display: block;
}

.preview-remove {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(239, 68, 68, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: all 0.3s;
}

.preview-remove:hover {
    background: var(--error);
    transform: scale(1.1);
}

/* Form Groups */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
}

.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background: white;
    transition: all 0.3s;
}

.form-select:hover,
.form-textarea:hover {
    border-color: var(--primary);
}

.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

/* Generate Button */
.btn-generate {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: var(--shadow);
}

.btn-generate:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-generate:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.loading-spinner {
    display: inline-block;
}

/* Progress Bar */
.progress-bar {
    margin-top: 20px;
    background: var(--background);
    border-radius: 10px;
    height: 40px;
    position: relative;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 10px;
    transition: width 0.3s;
    width: 0%;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-weight: 600;
    color: var(--text);
}

/* Result Container */
.result-container {
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-placeholder {
    text-align: center;
    color: var(--text-secondary);
}

.result-placeholder svg {
    margin-bottom: 15px;
    opacity: 0.5;
}

.result-placeholder p {
    font-size: 1.1rem;
}

.result-image {
    width: 100%;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.5s;
}

.result-info {
    margin-top: 15px;
    padding: 15px;
    background: var(--background);
    border-radius: 8px;
}

.result-info p {
    margin-bottom: 8px;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.result-actions {
    margin-top: 15px;
    display: flex;
    gap: 10px;
}

.btn-action {
    flex: 1;
    padding: 10px;
    background: white;
    border: 2px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    color: var(--text);
}

.btn-action:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Alert Messages */
.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    animation: slideDown 0.3s;
}

.alert-error {
    background: #fee2e2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.alert-success {
    background: #d1fae5;
    border: 1px solid #a7f3d0;
    color: #065f46;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .panel-header {
        flex-direction: column;
        gap: 15px;
    }

    .model-select {
        width: 100%;
    }

    .generator-panel,
    .result-panel {
        padding: 20px;
    }
}