/* QRGo.Church - Modern QR Code Generator Styles */

:root {
    /* Church-inspired color palette */
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --light-bg: #ecf0f1;
    --white: #ffffff;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --border-color: #bdc3c7;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-hover: 0 4px 20px rgba(0,0,0,0.15);
    
    /* Typography */
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-heading: 'Georgia', serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 20px;
}

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

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--text-dark);
    background: linear-gradient(135deg, var(--light-bg) 0%, #ffffff 100%);
    min-height: 100vh;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: var(--spacing-lg) 0;
    text-align: center;
    box-shadow: var(--shadow);
}

.header h1 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
    font-weight: 300;
}

.header .subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Main Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* Grid Layout */
.main-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

/* Control Panel */
.control-panel {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    height: fit-content;
}

.control-panel h2 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
    border-bottom: 2px solid var(--light-bg);
    padding-bottom: var(--spacing-xs);
}

/* Form Groups */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
    transform: translateY(-1px);
}

/* Color Picker Section */
.color-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.color-input-group {
    position: relative;
}

.color-input {
    height: 50px !important;
    border: none !important;
    border-radius: var(--radius-md) !important;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.color-input:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-hover);
}

.color-label {
    position: absolute;
    bottom: -25px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.8rem;
    color: var(--text-light);
    white-space: nowrap;
}

/* Logo Upload Section */
.logo-upload {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    background: var(--light-bg);
}

.logo-upload:hover {
    border-color: var(--secondary-color);
    background: rgba(52, 152, 219, 0.05);
}

.logo-upload.dragover {
    border-color: var(--success-color);
    background: rgba(39, 174, 96, 0.05);
}

.upload-icon {
    font-size: 3rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.upload-text {
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.file-input {
    display: none;
}

.logo-preview {
    max-width: 100px;
    max-height: 100px;
    border-radius: var(--radius-md);
    margin-top: var(--spacing-sm);
    box-shadow: var(--shadow);
}

/* Range Sliders */
.range-group {
    margin-bottom: var(--spacing-md);
}

.range-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: var(--light-bg);
    outline: none;
    -webkit-appearance: none;
}

.range-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--secondary-color);
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.range-slider::-webkit-slider-thumb:hover {
    background: var(--primary-color);
    transform: scale(1.2);
}

.range-value {
    display: inline-block;
    background: var(--secondary-color);
    color: var(--white);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    margin-left: var(--spacing-xs);
}

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    color: var(--white);
    box-shadow: var(--shadow);
}

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

.btn-success {
    background: var(--success-color);
    color: var(--white);
}

.btn-success:hover {
    background: #229954;
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
    justify-content: center;
}

/* Preview Panel */
.preview-panel {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    text-align: center;
    position: sticky;
    top: var(--spacing-lg);
}

.preview-panel h2 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.qr-preview {
    background: var(--light-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--border-color);
}

.qr-code-display {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.qr-code-display:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-hover);
}

.preview-placeholder {
    color: var(--text-light);
    font-style: italic;
}

/* Download Section */
.download-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

/* Error Messages */
.error-message {
    background: rgba(231, 76, 60, 0.1);
    color: var(--accent-color);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-color);
    margin-bottom: var(--spacing-md);
    display: none;
}

.success-message {
    background: rgba(39, 174, 96, 0.1);
    color: var(--success-color);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--success-color);
    margin-bottom: var(--spacing-md);
    display: none;
}

/* Loading Spinner */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .main-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .container {
        padding: var(--spacing-sm);
    }
    
    .color-section {
        grid-template-columns: 1fr;
    }
    
    .download-section {
        grid-template-columns: 1fr;
    }
    
    .preview-panel {
        position: static;
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.5rem;
    }
    
    .control-panel,
    .preview-panel {
        padding: var(--spacing-sm);
    }
}

/* Advanced Customization Sections */
.customization-section {
    background: var(--light-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.customization-section h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1.1rem;
    font-weight: 600;
}

/* Toggle Switches */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--secondary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* Animations */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}