/* QR Code Generator - Frontend Styles */

:root {
    --qrg-primary: #4f46e5;
    --qrg-primary-dark: #4338ca;
    --qrg-secondary: #10b981;
    --qrg-text: #1f2937;
    --qrg-text-light: #6b7280;
    --qrg-border: #e5e7eb;
    --qrg-bg: #ffffff;
    --qrg-bg-light: #f9fafb;
    --qrg-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --qrg-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.qrg-container {
    max-width: 900px;
    margin: 40px auto;
    padding: 30px;
    background: var(--qrg-bg);
    border-radius: 16px;
    box-shadow: var(--qrg-shadow-lg);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

/* Header */
.qrg-header {
    text-align: center;
    margin-bottom: 40px;
}

.qrg-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--qrg-text);
    margin: 0 0 10px 0;
    background: linear-gradient(135deg, var(--qrg-primary), var(--qrg-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.qrg-subtitle {
    font-size: 1.1rem;
    color: var(--qrg-text-light);
    margin: 0;
}

/* Tabs */
.qrg-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 2px solid var(--qrg-border);
    flex-wrap: wrap;
}

.qrg-tab-btn {
    flex: 1;
    min-width: 150px;
    padding: 15px 20px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--qrg-text-light);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.qrg-tab-btn:hover {
    color: var(--qrg-primary);
    background: var(--qrg-bg-light);
}

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

.qrg-tab-icon {
    font-size: 1.3rem;
}

/* Tab Content */
.qrg-tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Form Elements */
.qrg-form-group {
    margin-bottom: 20px;
}

.qrg-form-group label {
    display: block;
    font-weight: 600;
    color: var(--qrg-text);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.qrg-input,
.qrg-select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--qrg-border);
    border-radius: 8px;
    font-size: 1rem;
    color: var(--qrg-text);
    background: var(--qrg-bg);
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.qrg-input:focus,
.qrg-select:focus {
    outline: none;
    border-color: var(--qrg-primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.qrg-input::placeholder {
    color: #9ca3af;
}

textarea.qrg-input {
    resize: vertical;
    font-family: inherit;
}

.qrg-help-text {
    font-size: 0.875rem;
    color: var(--qrg-text-light);
    margin: 6px 0 0 0;
}

.qrg-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

@media (max-width: 640px) {
    .qrg-form-row {
        grid-template-columns: 1fr;
    }
}

/* Customization Section */
.qrg-customization {
    background: var(--qrg-bg-light);
    padding: 25px;
    border-radius: 12px;
    margin: 30px 0;
}

.qrg-section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--qrg-text);
    margin: 0 0 20px 0;
}

.qrg-custom-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

/* Range Input */
.qrg-range {
    width: calc(100% - 60px);
    height: 6px;
    border-radius: 3px;
    background: var(--qrg-border);
    outline: none;
    -webkit-appearance: none;
}

.qrg-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--qrg-primary);
    cursor: pointer;
}

.qrg-range::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--qrg-primary);
    cursor: pointer;
    border: none;
}

.qrg-range-value {
    display: inline-block;
    min-width: 45px;
    text-align: right;
    font-weight: 600;
    color: var(--qrg-primary);
    margin-left: 10px;
}

/* Color Picker */
.qrg-color-picker {
    display: flex;
    gap: 10px;
    align-items: center;
}

.qrg-color-input {
    width: 60px;
    height: 45px;
    border: 2px solid var(--qrg-border);
    border-radius: 8px;
    cursor: pointer;
    padding: 0;
}

.qrg-color-text {
    flex: 1;
    text-transform: uppercase;
}

.qrg-file-input {
    width: 100%;
    padding: 12px;
    border: 2px dashed var(--qrg-border);
    border-radius: 8px;
    cursor: pointer;
}

/* Buttons */
.qrg-btn {
    padding: 14px 32px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
}

.qrg-btn-primary {
    background: linear-gradient(135deg, var(--qrg-primary), var(--qrg-primary-dark));
    color: white;
    box-shadow: var(--qrg-shadow);
}

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

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

.qrg-btn-secondary:hover {
    background: #059669;
}

.qrg-btn-outline {
    background: transparent;
    border: 2px solid var(--qrg-border);
    color: var(--qrg-text);
}

.qrg-btn-outline:hover {
    border-color: var(--qrg-primary);
    color: var(--qrg-primary);
}

.qrg-btn-icon {
    font-size: 1.2rem;
}

.qrg-action-section {
    text-align: center;
    margin: 30px 0;
}

/* Result Section */
.qrg-result-section {
    background: var(--qrg-bg-light);
    padding: 30px;
    border-radius: 12px;
    margin: 30px 0;
}

.qrg-result-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 25px;
}

.qrg-qr-display {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--qrg-shadow);
    display: inline-block;
}

#qrg-qrcode {
    display: flex;
    justify-content: center;
    align-items: center;
}

#qrg-qrcode canvas,
#qrg-qrcode img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
}

.qrg-download-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

/* Features Section */
.qrg-features {
    margin-top: 50px;
    padding-top: 40px;
    border-top: 2px solid var(--qrg-border);
}

.qrg-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.qrg-feature-card {
    text-align: center;
    padding: 25px;
    background: var(--qrg-bg-light);
    border-radius: 12px;
    transition: transform 0.3s ease;
}

.qrg-feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--qrg-shadow);
}

.qrg-feature-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.qrg-feature-card h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--qrg-text);
    margin: 0 0 8px 0;
}

.qrg-feature-card p {
    font-size: 0.95rem;
    color: var(--qrg-text-light);
    margin: 0;
}

/* Dark Theme */
.qrg-theme-dark {
    --qrg-text: #f9fafb;
    --qrg-text-light: #d1d5db;
    --qrg-border: #374151;
    --qrg-bg: #1f2937;
    --qrg-bg-light: #111827;
}

/* Loading State */
.qrg-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.6;
}

.qrg-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    margin: -15px 0 0 -15px;
    border: 3px solid var(--qrg-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Responsive */
@media (max-width: 768px) {
    .qrg-container {
        padding: 20px;
        margin: 20px;
    }
    
    .qrg-title {
        font-size: 2rem;
    }
    
    .qrg-tabs {
        flex-direction: column;
    }
    
    .qrg-tab-btn {
        width: 100%;
    }
    
    .qrg-download-actions {
        flex-direction: column;
    }
    
    .qrg-download-actions .qrg-btn {
        width: 100%;
    }
}