/* Base Styles */
:root {
    --primary-color: #4285f4;
    --secondary-color: #34a853;
    --accent-color: #ea4335;
    --light-color: #f8f9fa;
    --dark-color: #202124;
    --gray-color: #5f6368;
    --light-gray: #e8eaed;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
header {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 1rem 0;
    text-align: center;
    margin-bottom: 1rem;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Main App Styles */
.app-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (min-width: 992px) {
    .app-container {
        flex-direction: row;
    }
}

.input-section {
    flex: 1;
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
}

.output-section {
    flex: 1;
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Tab Styles */
.tab-container {
    margin-bottom: 2rem;
}

.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tab-btn {
    padding: 0.5rem 1rem;
    background: var(--light-gray);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.tab-btn:hover {
    background: #d3d3d3;
}

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

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group input[type="color"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input[type="text"]:focus,
.form-group input[type="url"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="tel"]:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(66, 133, 244, 0.2);
}

.form-group input[type="range"] {
    width: 100%;
    margin-top: 0.5rem;
}

.form-group small {
    display: block;
    margin-top: 0.3rem;
    font-size: 0.8rem;
    color: var(--gray-color);
}

/* QR Code Preview Styles */
.qr-preview-container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 1.5rem;
    min-height: 300px;
    border: 1px dashed var(--light-gray);
    border-radius: var(--border-radius);
    position: relative;
    background-color: var(--white);
}

#qr-code {
    padding: 1rem;
    display: none;
}

#qr-code img {
    max-width: 100%;
    height: auto;
    display: block;
}

.qr-placeholder {
    text-align: center;
    color: var(--gray-color);
    padding: 2rem;
}

.qr-placeholder i {
    font-size: 5rem;
    margin-bottom: 1rem;
    color: var(--light-gray);
}

.qr-placeholder p {
    font-size: 1.1rem;
}

/* Download Options */
.download-options {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    justify-content: center;
    width: 100%;
}

.download-btn {
    padding: 0.6rem 1.2rem;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.download-btn:hover {
    background: #3367d6;
    transform: translateY(-2px);
}

.download-btn i {
    font-size: 0.9rem;
}

/* Customization Section */
.customization-section {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--light-gray);
}

.customization-section h3 {
    margin-bottom: 1.2rem;
    font-size: 1.2rem;
    color: var(--dark-color);
}

/* FAQ Section */
.faq-section {
    margin: 3rem auto;
}

.faq-section h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
    color: var(--dark-color);
}

.faq-item {
    margin-bottom: 1.5rem;
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.faq-question {
    padding: 1rem 1.5rem;
    background: var(--light-gray);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1rem;
}

.faq-question::after {
    content: '+';
    font-size: 1.3rem;
}

.faq-question.active::after {
    content: '-';
}

.faq-answer {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-answer.active {
    padding: 1rem 1.5rem;
    max-height: 1000px;
}

.faq-answer p, .faq-answer ul, .faq-answer ol {
    margin-bottom: 1rem;
}

.faq-answer ul, .faq-answer ol {
    padding-left: 1.5rem;
}

.faq-answer li {
    margin-bottom: 0.5rem;
}

/* Advertisement Styles */
.ad-container {
    margin: 2rem 0;
}

.ad-space {
    background-color: var(--light-gray);
    border-radius: var(--border-radius);
    padding: 1rem;
    text-align: center;
    min-height: 100px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--gray-color);
}

.top-ad {
    margin-bottom: 2rem;
}

.bottom-ad {
    margin-top: 2rem;
}

/* Footer Styles */
footer {
    background-color: var(--dark-color);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
    margin-top: 3rem;
}

.footer-links {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
}

/* Responsive Styles */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        width: 100%;
    }
    
    .download-options {
        flex-direction: column;
    }
    
    .download-btn {
        width: 100%;
        justify-content: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}
/* Color preview styles */
.color-picker-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.color-preview {
    display: inline-block;
    width: 30px;
    height: 30px;
    border-radius: 4px;
    border: 1px solid var(--light-gray);
    cursor: pointer;
}

/* Generate button styles */
.generate-btn {
    padding: 0.8rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    margin-top: 1rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.generate-btn:hover {
    background-color: #3367d6;
    transform: translateY(-2px);
}

/* Generation Mode Selector Styles */
.generation-mode-selector {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.generation-mode-selector .form-group {
    margin-bottom: 0;
}

.radio-group {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    position: relative;
    padding-left: 25px;
}

.radio-option input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.radio-checkmark {
    position: absolute;
    top: 2px;
    left: 0;
    height: 18px;
    width: 18px;
    background-color: var(--light-gray);
    border-radius: 50%;
    border: 2px solid var(--gray-color);
}

.radio-option:hover input ~ .radio-checkmark {
    background-color: #ddd;
}

.radio-option input:checked ~ .radio-checkmark {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.radio-checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.radio-option input:checked ~ .radio-checkmark:after {
    display: block;
}

.radio-option .radio-checkmark:after {
    top: 3px;
    left: 3px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
}