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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f5f7fa;
}

h1 {
    text-align: center;
    margin: 20px 0;
    color: #2c3e50;
    font-size: 2.2em;
}

.container {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    padding: 25px;
    margin-top: 20px;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
}

input, select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    transition: border-color 0.3s;
}

input:focus, select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

input[type="color"] {
    width: 60px;
    height: 40px;
    padding: 0;
    border: none;
    cursor: pointer;
    background: none;
}

input[type="color"]::-webkit-color-swatch {
    border: 1px solid #ddd;
    border-radius: 4px;
}

input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

input[type="file"] {
    padding: 8px 0;
}

.type-fields {
    display: none;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 6px;
    margin-top: 15px;
    border: 1px solid #e9ecef;
}

.type-fields.active {
    display: block;
}

button {
    background: #3498db;
    color: white;
    border: none;
    padding: 14px 20px;
    font-size: 16px;
    border-radius: 6px;
    cursor: pointer;
    width: 100%;
    font-weight: 600;
    transition: background 0.3s;
}

button:hover {
    background: #2980b9;
}

button:disabled {
    background: #95a5a6;
    cursor: not-allowed;
}

#result {
    display: none;
    margin-top: 30px;
}

#result h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #2c3e50;
    font-size: 24px;
}

.qr-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 25px;
    padding: 25px 0;
}

#qrImage {
    max-width: 100%;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    max-width: 500px;
}

.download-wrapper {
    width: 100%;
    display: flex;
    justify-content: center;
}

.download-btn {
    display: inline-block;
    background: #27ae60;
    color: white;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(39, 174, 96, 0.3);
    text-align: center;
    min-width: 200px;
}

.download-btn:hover {
    background: #219653;
    transform: translateY(-2px);
    box-shadow: 0 6px 8px rgba(39, 174, 96, 0.4);
}

.error {
    color: #e74c3c;
    background: #fadbd8;
    padding: 12px 15px;
    border-radius: 6px;
    margin: 15px 0;
    display: none;
    border-left: 4px solid #c0392b;
}

.help-text {
    margin-top: 8px;
    font-size: 14px;
    color: #7f8c8d;
    line-height: 1.5;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 6px;
    border-left: 3px solid #3498db;
}

/* Стили для превью размера */
.size-preview {
    padding: 12px;
    border-radius: 6px;
    margin-top: 8px;
    font-size: 14px;
    line-height: 1.5;
}

.size-preview:not(.active) {
    color: #7f8c8d;
    background: #f8f9fa;
    border: 1px dashed #bdc3c7;
}

.size-preview.active {
    color: #2c3e50;
    background: #e8f4fc;
    border: 1px solid #3498db;
}

.size-preview.generated {
    color: #27ae60;
    background: #e8f7ef;
    border: 1px solid #2ecc71;
    font-weight: 500;
}

.size-preview.generated strong {
    display: block;
    margin-bottom: 4px;
}

/* Стили для выбора цветов */
.color-picker-group {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

.color-picker-row {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.color-picker-item {
    flex: 1;
    min-width: 150px;
}

.color-preview {
    display: inline-block;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    margin-left: 10px;
    vertical-align: middle;
    border: 2px solid #eee;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* Стили для логотипа */
.logo-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.logo-preview-container {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 15px 0;
    border: 2px dashed #ddd;
    border-radius: 8px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f9f9f9;
}

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

.remove-logo-btn {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #e74c3c;
    color: white;
    border: 2px solid white;
    font-weight: bold;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    z-index: 10;
}

.remove-logo-btn:hover {
    background: #c0392b;
}

.logo-shape-buttons {
    display: flex;
    gap: 10px;
    margin-top: 10px;
}

.shape-btn {
    flex: 1;
    padding: 10px 5px;
    border: 1px solid #ddd;
    border-radius: 6px;
    background: #f8f9fa;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
    color: #2c3035; /* Темно-серый цвет текста для лучшей читаемости */
}

.shape-btn:hover {
    background: #e9ecef;
    border-color: #3498db;
}

.shape-btn.active {
    background: #3498db;
    color: white;
    border-color: #2980b9;
}

.logo-help {
    border-left: 3px solid #e74c3c;
    background: #fef6f6;
}

.caption-group {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #eee;
}

@media (max-width: 600px) {
    .color-picker-row {
        flex-direction: column;
        gap: 10px;
    }
    
    .container {
        padding: 15px;
    }
    
    input, button {
        padding: 10px;
    }
    
    .download-btn {
        width: 100%;
        padding: 14px;
        min-width: auto;
    }
    
    #qrImage {
        max-width: 100%;
    }
    
    .help-text {
        font-size: 13px;
        padding: 8px;
    }
    
    .logo-preview-container {
        width: 100px;
        height: 100px;
    }
    
    .logo-shape-buttons {
        flex-direction: column;
        gap: 8px;
    }
    
    .shape-btn {
        width: 100%;
    }
}