/* Variables CSS */
:root {
    --qr-primary: #0073aa;
    --qr-primary-dark: #005a87;
    --qr-success: #46b450;
    --qr-error: #dc3232;
    --qr-border: #ddd;
    --qr-background: #fff;
    --qr-text: #333;
    --qr-shadow: 0 2px 4px rgba(0,0,0,0.1);
    --qr-radius: 4px;
    --qr-transition: all 0.2s ease;
}

/* Mode sombre */
@media (prefers-color-scheme: dark) {
    :root {
        --qr-border: #444;
        --qr-background: #1e1e1e;
        --qr-text: #fff;
        --qr-shadow: 0 2px 4px rgba(0,0,0,0.3);
    }
}

/* Reset et base */
.qr-generator-widget * {
    box-sizing: border-box;
}

/* Container principal */
.qr-generator-widget {
    max-width: 800px;
    margin: 20px auto;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: var(--qr-text);
}

.qr-generator-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

@media (max-width: 768px) {
    .qr-generator-container {
        grid-template-columns: 1fr;
    }
}

/* Sections du formulaire et résultat */
.qr-generator-form,
.qr-generator-result {
    background: var(--qr-background);
    border: 1px solid var(--qr-border);
    border-radius: var(--qr-radius);
    padding: 20px;
    box-shadow: var(--qr-shadow);
    transition: var(--qr-transition);
}

.qr-generator-form:hover,
.qr-generator-result:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

/* Groupes de formulaire */
.qr-form-group {
    margin-bottom: 15px;
}

.qr-form-group:last-child {
    margin-bottom: 0;
}

.qr-form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: var(--qr-text);
    font-size: 14px;
}

/* Champs de formulaire */
.qr-form-input,
.qr-form-select,
.qr-form-textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--qr-border);
    border-radius: var(--qr-radius);
    font-size: 14px;
    background: var(--qr-background);
    color: var(--qr-text);
    transition: var(--qr-transition);
    font-family: inherit;
}

.qr-form-input:focus,
.qr-form-select:focus,
.qr-form-textarea:focus {
    outline: none;
    border-color: var(--qr-primary);
    box-shadow: 0 0 0 2px rgba(0,115,170,0.1);
}

.qr-form-textarea {
    resize: vertical;
    min-height: 80px;
    line-height: 1.4;
}

/* Range slider */
.qr-size-range {
    width: 100%;
    margin-bottom: 5px;
    height: 6px;
    background: var(--qr-border);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
}

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

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

.qr-size-value {
    font-weight: 600;
    color: var(--qr-primary);
    font-size: 14px;
}

/* Upload de logo */
.qr-logo-preview {
    margin-top: 10px;
    padding: 10px;
    background: #f9f9f9;
    border: 1px solid var(--qr-border);
    border-radius: var(--qr-radius);
    display: flex;
    align-items: center;
    gap: 10px;
}

@media (prefers-color-scheme: dark) {
    .qr-logo-preview {
        background: #2d2d2d;
    }
}

.qr-logo-img {
    border-radius: var(--qr-radius);
    border: 1px solid var(--qr-border);
    object-fit: cover;
}

/* Actions du formulaire */
.qr-form-actions,
.qr-result-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 20px;
}

@media (max-width: 480px) {
    .qr-form-actions,
    .qr-result-actions {
        flex-direction: column;
    }
}

/* Section résultat */
.qr-generator-result {
    text-align: center;
}

.qr-canvas {
    border: 1px solid var(--qr-border);
    border-radius: var(--qr-radius);
    margin: 20px 0;
    max-width: 100%;
    height: auto;
    box-shadow: var(--qr-shadow);
}

/* Informations QR */
.qr-info {
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: var(--qr-radius);
    padding: 15px;
    margin-top: 20px;
    text-align: left;
    font-size: 14px;
}

@media (prefers-color-scheme: dark) {
    .qr-info {
        background: #2d2d2d;
        border-color: #444;
        color: #fff;
    }
}

.qr-info p {
    margin: 5px 0;
    line-height: 1.4;
}

.qr-info strong {
    color: var(--qr-primary);
}

/* Messages */
.qr-messages {
    margin-top: 20px;
}

.qr-error-message,
.qr-success-message {
    padding: 12px 15px;
    border-radius: var(--qr-radius);
    margin-bottom: 10px;
    font-size: 14px;
    font-weight: 500;
    animation: slideIn 0.3s ease;
}

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

.qr-error-message {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.qr-success-message {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

@media (prefers-color-scheme: dark) {
    .qr-error-message {
        background: #450a0a;
        color: #fca5a5;
        border-color: #7f1d1d;
    }
    
    .qr-success-message {
        background: #052e16;
        color: #86efac;
        border-color: #166534;
    }
}

/* Styles pour QR statiques */
.qr-static-widget {
    text-align: center;
    margin: 20px 0;
}

.qr-static-canvas {
    border: 1px solid var(--qr-border);
    border-radius: var(--qr-radius);
    max-width: 100%;
    height: auto;
    box-shadow: var(--qr-shadow);
}

/* Boutons */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    background: var(--qr-primary);
    color: white;
    border: none;
    border-radius: var(--qr-radius);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--qr-transition);
    min-height: 38px;
    line-height: 1;
}

.button:hover:not(:disabled) {
    background: var(--qr-primary-dark);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.button:active:not(:disabled) {
    transform: translateY(0);
}

.button:disabled {
    background: #ccc;
    color: #666;
    cursor: not-allowed;
    opacity: 0.6;
}

.button-primary {
    background: var(--qr-primary);
}

.button-primary:hover:not(:disabled) {
    background: var(--qr-primary-dark);
}

.button-secondary {
    background: #f1f1f1;
    color: var(--qr-text);
    border: 1px solid var(--qr-border);
}

.button-secondary:hover:not(:disabled) {
    background: #e9e9e9;
    color: var(--qr-text);
}

@media (prefers-color-scheme: dark) {
    .button-secondary {
        background: #374151;
        color: #fff;
        border-color: #4b5563;
    }
    
    .button-secondary:hover:not(:disabled) {
        background: #4b5563;
        color: #fff;
    }
}

/* Responsive */
@media (max-width: 640px) {
    .qr-generator-widget {
        margin: 10px;
    }
    
    .qr-generator-form,
    .qr-generator-result {
        padding: 15px;
    }
    
    .button {
        width: 100%;
        padding: 12px 16px;
    }
}

/* Accessibilité */
.qr-form-input:focus-visible,
.qr-form-select:focus-visible,
.qr-form-textarea:focus-visible,
.button:focus-visible {
    outline: 2px solid var(--qr-primary);
    outline-offset: 2px;
}

/* Animations */
.qr-generator-form,
.qr-generator-result {
    animation: fadeInUp 0.5s ease;
}

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