:root {
    /* Cores principais */
    --primary-color: #4361ee;
    --primary-dark: #3a56d4;
    --secondary-color: #7209b7;
    --accent-color: #f72585;
    /* Cores de fundo */
    --bg-light: #f8f9fa;
    --bg-dark: #121212;
    /* Cores de texto */
    --text-light: #212529;
    --text-dark: #e9ecef;
    --text-muted: #6c757d;
    /* Cores de componentes */
    --card-bg-light: #ffffff;
    --card-bg-dark: #1e1e1e;
    --input-bg-light: #ffffff;
    --input-bg-dark: #2a2a2a;
    --border-light: #dee2e6;
    --border-dark: #444444;
    /* Sombras */
    --shadow-light: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-dark: 0 4px 20px rgba(0, 0, 0, 0.25);
    /* Transições */
    --transition-speed: 0.3s;
    /* Espaçamento */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    /* Arredondamento */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 1rem;
    --border-radius-xl: 2rem;
    --border-radius-full: 50%;
}

main {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

@media (max-width: 768px) {
    main {
        grid-template-columns: 1fr;
    }
}

/* Input Section */
.input-section {
    border: 1px solid lightgray;
    background-color: var(--card-bg);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    transition: background-color var(--transition-speed), box-shadow var(--transition-speed);
}

    .input-section h2 {
        font-size: 1.8rem;
        margin-bottom: var(--spacing-xs);
        background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }

.subtitle {
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.input-group {
    margin-bottom: var(--spacing-md);
}

    .input-group label {
        display: block;
        margin-bottom: var(--spacing-xs);
        font-weight: 500;
    }

select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid lightgray;
    border-radius: var(--border-radius-md);
    background-color: var(--input-bg);
    color: var(--text-color);
    font-family: inherit;
    resize: none;
    transition: border-color var(--transition-speed), background-color var(--transition-speed);
}

    textarea:focus, select:focus {
        outline: none;
        border-color: var(--primary-color);
        box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.2);
    }

.options-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 576px) {
    .options-container {
        grid-template-columns: 1fr;
    }
}

.option-group {
    margin-bottom: var(--spacing-sm);
}

.range-container, .color-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.slider {
    -webkit-appearance: none;
    width: 100%;
    height: 6px;
    border-radius: var(--border-radius-full);
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    outline: none;
}

    .slider::-webkit-slider-thumb {
        -webkit-appearance: none;
        appearance: none;
        width: 18px;
        height: 18px;
        border-radius: 50%;
        background: var(--accent-color);
        cursor: pointer;
        transition: transform 0.1s;
    }

        .slider::-webkit-slider-thumb:hover {
            transform: scale(1.2);
        }

    .slider::-moz-range-thumb {
        width: 18px;
        height: 18px;
        border-radius: 50%;
        background: var(--accent-color);
        cursor: pointer;
        transition: transform 0.1s;
        border: none;
    }

        .slider::-moz-range-thumb:hover {
            transform: scale(1.2);
        }

input[type="color"] {
    -webkit-appearance: none;
    width: 40px;
    height: 40px;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
}

    input[type="color"]::-webkit-color-swatch-wrapper {
        padding: 0;
    }

    input[type="color"]::-webkit-color-swatch {
        border: none;
        border-radius: var(--border-radius-md);
    }

/* Buttons */
.primary-btn, .secondary-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius-md);
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition-speed), background-color var(--transition-speed), box-shadow var(--transition-speed);
}

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

    .primary-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(67, 97, 238, 0.3);
    }

    .primary-btn:active {
        transform: translateY(0);
    }

.secondary-btn {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    flex: 1;
}

    .secondary-btn:hover {
        background-color: rgba(67, 97, 238, 0.1);
    }

    .secondary-btn:disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }

/* Result Section */
.result-section {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    transition: background-color var(--transition-speed), box-shadow var(--transition-speed);
}

.qr-container {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 250px;
    margin-bottom: var(--spacing-md);
}

.qr-result {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    transition: opacity var(--transition-speed);
}

    .qr-result img {
        max-width: 100%;
        border-radius: var(--border-radius-md);
        box-shadow: var(--shadow);
    }

.placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--text-muted);
    text-align: center;
    padding: var(--spacing-lg);
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    width: 100%;
    height: 250px;
}

    .placeholder i {
        font-size: 3rem;
        opacity: 0.5;
    }

.loading-spinner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(var(--card-bg), 0.7);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-speed);
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(var(--primary-color), 0.3);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
}

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

.action-buttons {
    display: flex;
    gap: var(--spacing-md);
}

/* Features Section */
.features {
    margin: var(--spacing-xl) 0;
}

    .features h2 {
        text-align: center;
        margin-bottom: var(--spacing-lg);
        font-size: 2rem;
        background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), background-color var(--transition-speed);
}

    .feature-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    }

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.feature-card h3 {
    margin-bottom: var(--spacing-xs);
    font-size: 1.2rem;
}

.feature-card p {
    color: var(--text-muted);
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background-color: var(--card-bg);
    color: var(--text-color);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    min-width: 300px;
    transform: translateY(100px);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s, opacity 0.3s, visibility 0.3s;
    z-index: 1000;
}

    .toast.show {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

.toast-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

    .toast-content i {
        color: #4caf50;
        font-size: 1.2rem;
    }

.toast-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 3px;
    width: 100%;
    background-color: var(--primary-color);
    transform-origin: left;
    animation: progress 3s linear forwards;
}

@keyframes progress {
    to {
        transform: scaleX(0);
    }
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

    .modal.show {
        opacity: 1;
        visibility: visible;
    }

.modal-content {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow);
    transform: scale(0.9);
    transition: transform 0.3s;
}

.modal.show .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

    .modal-header h3 {
        margin: 0;
        color: var(--text-color);
    }

.close-modal {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: color var(--transition-speed);
}

    .close-modal:hover {
        color: var(--accent-color);
    }

.modal-body {
    padding: var(--spacing-md);
}

.share-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.share-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm);
    background: none;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: background-color var(--transition-speed), transform var(--transition-speed);
}

    .share-option:hover {
        background-color: rgba(var(--primary-color), 0.1);
        transform: translateY(-2px);
    }

    .share-option i {
        font-size: 1.5rem;
    }

    .share-option[data-platform="facebook"] i {
        color: #1877f2;
    }

    .share-option[data-platform="twitter"] i {
        color: #1da1f2;
    }

    .share-option[data-platform="whatsapp"] i {
        color: #25d366;
    }

    .share-option[data-platform="telegram"] i {
        color: #0088cc;
    }

    .share-option[data-platform="email"] i {
        color: #ea4335;
    }

.copy-link {
    display: flex;
    margin-top: var(--spacing-md);
}

    .copy-link input {
        flex: 1;
        padding: var(--spacing-sm);
        border: 1px solid var(--border-color);
        border-right: none;
        border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
        background-color: var(--input-bg);
        color: var(--text-color);
    }

    .copy-link button {
        padding: var(--spacing-sm);
        background-color: var(--primary-color);
        color: white;
        border: none;
        border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
        cursor: pointer;
        transition: background-color var(--transition-speed);
    }

        .copy-link button:hover {
            background-color: var(--primary-dark);
        }


.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

    .social-links a {
        color: var(--primary-color);
        font-size: 1.3rem;
        transition: color 0.2s;
    }

        .social-links a:hover {
            color: var(--accent-color);
        }

/* Responsividade extra */
@media (max-width: 600px) {
    .container {
        padding: var(--spacing-sm);
    }

    .input-section, .result-section {
        padding: var(--spacing-md);
    }

 
}