* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    padding: 20px;
    color: #f0f0f0;
    animation: fadeIn 1s ease-in;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: #1c1f26;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    width: 100%;
    animation: fadeInUp 0.8s ease-in-out;
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 20px;
    }
}

h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #80d0ff;
}

.input-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #a5c9ea;
}

input,
select {
    width: 100%;
    padding: 12px;
    border: 1px solid #444;
    background-color: #2a2f38;
    color: #e0e0e0;
    border-radius: 5px;
    font-size: 16px;
    transition: 0.3s;
}

input:focus,
select:focus {
    border-color: #4285f4;
    outline: none;
    background-color: #333b47;
}

.logo-container {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.logo-preview {
    width: 100px;
    height: 100px;
    border: 1px dashed #666;
    margin-right: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #2e2e2e;
    color: #888;
}

.logo-preview img {
    max-width: 100%;
    max-height: 100%;
    display: none;
}

.btn {
    background-color: #007bff;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
    transition: 0.3s ease;
}

.btn:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: #d9534f;
}

.btn-secondary:hover {
    background-color: #b52b27;
}

.row {
    display: flex;
    margin: 0 -10px;
    flex-wrap: wrap;
}

.col {
    flex: 1;
    padding: 0 10px;
    min-width: 150px;
    margin-bottom: 10px;
}

.qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-top: 20px;
}

#qrcode {
    margin-top: 20px;
    border: 1px solid #444;
    padding: 15px;
    border-radius: 5px;
    background-color: #2c2f36;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

@media (max-width: 768px) {
    .options {
        flex-direction: column;
        gap: 5px;
    }

    .logo-container {
        flex-direction: column;
    }

    .logo-preview {
        margin-right: 0;
        margin-bottom: 15px;
    }
}

.download-btn {
    margin-top: 20px;
    display: none;
}

.options {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.option-group {
    flex: 1;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}