/* Reset und Basis-Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

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

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* Upload Section */
.upload-section {
    background: white;
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 40px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

.upload-area {
    position: relative;
    border: 3px dashed #e1e5e9;
    border-radius: 15px;
    padding: 40px 20px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    margin-bottom: 30px;
}

.upload-area:hover {
    border-color: #667eea;
    background: #f8f9ff;
}

.upload-area.dragover {
    border-color: #667eea;
    background: #f0f2ff;
    transform: scale(1.02);
}

.upload-area input[type="file"] {
    position: absolute;
    left: -9999px;
    opacity: 0;
}

.upload-content {
    pointer-events: none;
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.upload-content p {
    font-size: 1.2rem;
    font-weight: 600;
    color: #667eea;
    margin-bottom: 8px;
}

.file-types {
    color: #8b95a1;
    font-size: 0.9rem;
}

/* Image Preview */
.image-preview {
    position: relative;
    display: inline-block;
    max-width: 300px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.image-preview img {
    width: 100%;
    height: auto;
    display: block;
}

.remove-image {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(255,255,255,0.9);
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.remove-image:hover {
    background: #ff4757;
    color: white;
    transform: scale(1.1);
}

/* Scenario Section */
.scenario-section h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    color: #333;
    text-align: center;
}

.scenario-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.scenario-card {
    position: relative;
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 12px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: block;
}

.scenario-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
    border-color: #667eea;
}

.scenario-card input[type="radio"] {
    position: absolute;
    left: -9999px;
    opacity: 0;
}

.scenario-card input[type="radio"]:checked + .scenario-content {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border-radius: 8px;
    padding: 15px;
    margin: -15px;
}

.scenario-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.scenario-content p {
    font-size: 0.9rem;
    opacity: 0.8;
    line-height: 1.4;
}

.custom-scenario {
    border-style: dashed;
    border-color: #ffa502;
}

/* Custom Prompt */
.custom-prompt {
    margin-top: 20px;
    animation: slideDown 0.3s ease;
}

.custom-prompt label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
}

.custom-prompt textarea {
    width: 100%;
    min-height: 100px;
    padding: 15px;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
    resize: vertical;
    transition: border-color 0.3s ease;
}

.custom-prompt textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Generate Button */
.generate-btn {
    width: 100%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 18px 30px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4);
}

.generate-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

.btn-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

/* Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* Gallery Section */
.gallery-section {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.1);
}

.gallery-section h2 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 2rem;
    color: #333;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.gallery-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    transition: transform 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-5px);
}

.gallery-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.gallery-item img:hover {
    transform: scale(1.05);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.view-btn, .download-btn {
    background: white;
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: transform 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.view-btn:hover, .download-btn:hover {
    transform: scale(1.1);
}

.view-btn {
    background: #667eea;
    color: white;
}

.view-btn:hover {
    background: #5a67d8;
}

.empty-gallery {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: #8b95a1;
}

.empty-gallery p {
    font-size: 1.1rem;
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: #333;
    color: white;
    padding: 15px 25px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    transform: translateX(400px);
    transition: transform 0.3s ease;
    z-index: 1000;
    max-width: 350px;
}

.toast.show {
    transform: translateX(0);
}

.toast.success {
    background: #2ed573;
}

.toast.error {
    background: #ff4757;
}

/* Animations */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Image Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: modalFadeIn 0.3s ease;
}

.modal.show {
    display: flex;
}

.modal-content {
    position: relative;
    background: white;
    border-radius: 20px;
    max-width: 90vw;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 25px 80px rgba(0,0,0,0.5);
    animation: modalSlideIn 0.3s ease;
}

.modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid #e1e5e9;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
}

.modal-header h3 {
    margin: 0;
    font-size: 1.3rem;
    font-weight: 600;
}

.modal-close {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    font-size: 1.5rem;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: rgba(255,255,255,0.3);
    transform: scale(1.1);
}

.modal-body {
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    max-height: 70vh;
    overflow: hidden;
}

.modal-body img {
    max-width: 100%;
    max-height: 70vh;
    object-fit: contain;
    display: block;
}

.modal-footer {
    padding: 20px 25px;
    border-top: 1px solid #e1e5e9;
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    background: #f8f9fa;
}

.modal-download-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.modal-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.modal-close-btn {
    background: #e9ecef;
    color: #495057;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-close-btn:hover {
    background: #dee2e6;
    transform: translateY(-1px);
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

/* Modal Animations */
@keyframes modalFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.8) translateY(-50px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .upload-section, .gallery-section {
        padding: 20px;
    }
    
    .scenario-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 15px;
    }
    
    .toast {
        right: 15px;
        bottom: 15px;
        left: 15px;
        max-width: none;
    }
    
    /* Modal Responsive */
    .modal-content {
        max-width: 95vw;
        max-height: 95vh;
        margin: 20px;
    }
    
    .modal-header {
        padding: 15px 20px;
    }
    
    .modal-header h3 {
        font-size: 1.1rem;
    }
    
    .modal-footer {
        padding: 15px 20px;
        flex-direction: column;
        gap: 10px;
    }
    
    .modal-download-btn,
    .modal-close-btn {
        width: 100%;
        justify-content: center;
    }
}