/* QR Code Generator & Scanner Styles */

:root {
    --primary-color: #2196f3;
    --secondary-color: #1976d2;
    --accent-color: #03dac6;
    --success-color: #4caf50;
    --warning-color: #ff9800;
    --error-color: #f44336;
    --background-color: #f5f5f5;
    --surface-color: #ffffff;
    --text-color: #212121;
    --text-muted: #757575;
    --border-color: #e0e0e0;
    --shadow: 0 2px 8px 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: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, var(--background-color) 0%, #e3f2fd 100%);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.icon {
    font-size: 3rem;
    filter: drop-shadow(0 2px 4px rgba(33, 150, 243, 0.3));
}

header p {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Tab System */
.tab-container {
    background: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.tabs {
    display: flex;
    background: #f8f9fa;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: 1rem 1.5rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border-bottom: 3px solid transparent;
}

.tab-btn:hover {
    background: rgba(33, 150, 243, 0.1);
    color: var(--primary-color);
}

.tab-btn.active {
    background: var(--surface-color);
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
    padding: 2rem;
}

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

/* Generate Tab Styles */
.input-section {
    margin-bottom: 2rem;
}

.qr-type-selector {
    margin-bottom: 2rem;
}

.qr-type-selector label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.qr-type-selector select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    background: var(--surface-color);
    transition: var(--transition);
}

.qr-type-selector select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.input-group {
    margin-bottom: 1.5rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.input-group input,
.input-group textarea,
.input-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.input-group textarea {
    resize: vertical;
    min-height: 100px;
}

.input-group input:focus,
.input-group textarea:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.hidden {
    display: none !important;
}

/* Contact Fields */
.contact-fields .field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.contact-fields .field {
    margin-bottom: 1rem;
}

/* Customization Section */
.customization-section {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin-bottom: 2rem;
}

.customization-section h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.custom-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

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

.option-group input,
.option-group select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

/* Buttons */
.primary-btn,
.download-btn,
.scan-method-btn,
.control-btn,
.action-btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.primary-btn {
    background: var(--primary-color);
    color: white;
    width: 100%;
    margin-top: 1rem;
}

.primary-btn:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.download-btn,
.action-btn {
    background: var(--success-color);
    color: white;
    margin: 0.5rem;
}

.download-btn:hover,
.action-btn:hover {
    background: #388e3c;
    transform: translateY(-2px);
}

.scan-method-btn,
.control-btn {
    background: var(--accent-color);
    color: var(--text-color);
    margin: 0.5rem;
}

.scan-method-btn:hover,
.control-btn:hover {
    background: #00acc1;
    transform: translateY(-2px);
}

/* Output Section */
.output-section {
    text-align: center;
}

#qr-display {
    background: var(--surface-color);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#qr-placeholder {
    color: var(--text-muted);
    font-style: italic;
}

#qr-canvas {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.download-options {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

/* Scan Tab Styles */
.scan-section {
    max-width: 800px;
    margin: 0 auto;
}

.scan-methods {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

#camera-container {
    text-align: center;
    margin-bottom: 2rem;
}

#camera-video {
    width: 100%;
    max-width: 500px;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    background: #000;
}

.camera-controls {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* File Upload */
.upload-area {
    border: 2px dashed var(--primary-color);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: rgba(33, 150, 243, 0.05);
}

.upload-area:hover {
    background: rgba(33, 150, 243, 0.1);
    border-color: var(--secondary-color);
}

.upload-area.drag-over {
    background: rgba(33, 150, 243, 0.15);
    border-color: var(--secondary-color);
    transform: scale(1.02);
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

#uploaded-image {
    max-width: 100%;
    max-height: 400px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin: 1rem 0;
}

/* Scan Results */
#scan-results {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: var(--border-radius);
    margin-top: 2rem;
}

#scan-result-content {
    background: var(--surface-color);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    margin: 1rem 0;
    word-break: break-all;
    font-family: 'Courier New', monospace;
    border-left: 4px solid var(--success-color);
}

.result-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Templates Tab */
.templates-section {
    max-width: 1000px;
    margin: 0 auto;
}

.templates-section h3 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
    font-size: 1.5rem;
}

.templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.template-card {
    background: var(--surface-color);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
}

.template-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.template-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.template-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.template-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    h1 {
        font-size: 2rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        text-align: center;
    }
    
    .tab-content {
        padding: 1.5rem;
    }
    
    .contact-fields .field-row {
        grid-template-columns: 1fr;
    }
    
    .custom-options {
        grid-template-columns: 1fr;
    }
    
    .scan-methods {
        flex-direction: column;
        align-items: center;
    }
    
    .camera-controls {
        flex-direction: column;
        align-items: center;
    }
    
    .download-options,
    .result-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .templates-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }
    
    .icon {
        font-size: 2.5rem;
    }
    
    .primary-btn,
    .download-btn,
    .scan-method-btn,
    .control-btn,
    .action-btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
    
    .upload-area {
        padding: 2rem 1rem;
    }
    
    .upload-icon {
        font-size: 2rem;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #121212;
        --surface-color: #1e1e1e;
        --text-color: #ffffff;
        --text-muted: #b0b0b0;
        --border-color: #333333;
        --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    }
    
    body {
        background: linear-gradient(135deg, var(--background-color) 0%, #1a1a2e 100%);
    }
    
    .customization-section {
        background: #2a2a2a;
    }
    
    #scan-results {
        background: #2a2a2a;
    }
    
    .upload-area {
        background: rgba(33, 150, 243, 0.1);
    }
    
    .upload-area:hover {
        background: rgba(33, 150, 243, 0.2);
    }
}