:root {
    --primary-color: #4a6bff;
    --secondary-color: #f8f9fa;
    --text-color: #333;
    --light-text: #666;
    --border-color: #ddd;
    --error-color: #ff4444;
    --success-color: #00c851;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

body {
    background-color: #f5f7ff;
    color: var(--text-color);
    line-height: 1.6;
}

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

header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px 0;
}

header h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

header h1 i {
    margin-right: 10px;
}

header p {
    color: var(--light-text);
    font-size: 1.1rem;
}

.upload-area {
    background-color: white;
    border: 2px dashed var(--border-color);
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    margin-bottom: 30px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: rgba(74, 107, 255, 0.05);
}

.upload-area.active {
    border-color: var(--primary-color);
    background-color: rgba(74, 107, 255, 0.1);
}

.upload-content i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.upload-content h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.upload-content p {
    margin: 10px 0;
    color: var(--light-text);
}

.btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 25px;
    border-radius: 5px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn:hover {
    background-color: #3a5bef;
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: rgba(74, 107, 255, 0.1);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.options-section {
    background-color: white;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.options-section h2 {
    margin-bottom: 20px;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.options-section h2 i {
    margin-right: 10px;
}

.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.option-group {
    margin-bottom: 15px;
}

.option-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.option-group select, 
.option-group input[type="number"],
.option-group input[type="color"] {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
}

.option-group input[type="color"] {
    height: 40px;
    padding: 3px;
}

.preview-section {
    background-color: white;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.preview-section h2 {
    margin-bottom: 20px;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.image-item {
    position: relative;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    overflow: hidden;
    height: 150px;
}

.image-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: #f5f5f5;
}

.image-item .remove-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    background-color: rgba(255, 68, 68, 0.8);
    color: white;
    border: none;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.3s;
}

.image-item:hover .remove-btn {
    opacity: 1;
}

.action-buttons {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.progress-section {
    background-color: white;
    border-radius: 10px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    text-align: center;
}

.progress-section h2 {
    margin-bottom: 20px;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.progress-bar {
    width: 100%;
    height: 10px;
    background-color: #eee;
    border-radius: 5px;
    margin: 20px 0;
    overflow: hidden;
}

.progress {
    height: 100%;
    background-color: var(--primary-color);
    width: 0%;
    transition: width 0.3s ease;
}

#progressText {
    color: var(--light-text);
}

footer {
    text-align: center;
    margin-top: 50px;
    padding: 20px 0;
    color: var(--light-text);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .options-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .btn {
        width: 100%;
    }
}