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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #E3F2FD 0%, #BBDEFB 50%, #90CAF9 100%);
    min-height: 100vh;
    padding: 2rem;
    color: #1565C0;
}

.container {
    max-width: 900px;
    margin: 0 auto;
}

h1 {
    text-align: center;
    color: #0D47A1;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-shadow: 0 2px 4px rgba(13, 71, 161, 0.1);
    letter-spacing: -0.5px;
}

.card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 8px 32px rgba(33, 150, 243, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

form {
    display: grid;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

label {
    font-weight: 500;
    color: #1976D2;
    font-size: 0.95rem;
}

input[type="number"],
input[type="text"],
select {
    padding: 0.75rem 1rem;
    border: 2px solid #BBDEFB;
    border-radius: 8px;
    font-size: 1rem;
    color: #1565C0;
    background: rgba(255, 255, 255, 0.9);
    transition: all 0.3s ease;
    outline: none;
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
    border-color: #2196F3;
    background: #fff;
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

input[type="file"] {
    padding: 1rem;
    border: 2px dashed #90CAF9;
    border-radius: 8px;
    background: rgba(227, 242, 253, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
    color: #1565C0;
    font-size: 0.95rem;
}

input[type="file"]:hover {
    border-color: #2196F3;
    background: rgba(187, 222, 251, 0.7);
}

input[type="file"]::-webkit-file-upload-button {
    padding: 0.5rem 1rem;
    background: #2196F3;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    margin-right: 1rem;
    transition: background 0.3s ease;
}

input[type="file"]::-webkit-file-upload-button:hover {
    background: #1976D2;
}

.button-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

button {
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #2196F3 0%, #1976D2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.3);
    letter-spacing: 0.5px;
    flex: 1;
    min-width: 150px;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(33, 150, 243, 0.4);
    background: linear-gradient(135deg, #1976D2 0%, #1565C0 100%);
}

button:active {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(33, 150, 243, 0.3);
}

.reset-button {
    background: linear-gradient(135deg, #EF5350 0%, #E53935 100%);
    box-shadow: 0 4px 15px rgba(239, 83, 80, 0.3);
}

.reset-button:hover {
    background: linear-gradient(135deg, #E53935 0%, #C62828 100%);
    box-shadow: 0 6px 20px rgba(239, 83, 80, 0.4);
}

#preview {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 12px;
    min-height: 200px;
}

#preview img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.2);
    transition: all 0.3s ease;
    border: 2px solid rgba(187, 222, 251, 0.5);
}

#preview img:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(33, 150, 243, 0.3);
    border-color: #2196F3;
}

@media (max-width: 768px) {
    body {
        padding: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    .card {
        padding: 1.5rem;
    }

    #preview {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}