:root {
    --primary-color: #25D366;
    --primary-hover: #128C7E;
    --text-color: #2C3E50;
    --light-bg: #F8F9FA;
    --border-color: #E9ECEF;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--light-bg);
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    padding: 0.8rem 0;
    transition: var(--transition);
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.2rem;
    color: #333 !important;
}

.navbar-brand i {
    color: #25D366;
    font-size: 1.75rem;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    color: #333 !important;
    border-radius: 0.5rem;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: #25D366 !important;
}

.nav-link.active {
    color: var(--primary-color) !important;
    background-color: rgba(37, 211, 102, 0.1);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 5px;
    height: 5px;
    background-color: var(--primary-color);
    border-radius: 50%;
}

.nav-link.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.nav-link i {
    font-size: 1.1rem;
}

.card {
    background: #fff;
    border: none;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.form-control {
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(37, 211, 102, 0.15);
}

.input-group-text {
    border: 1px solid var(--border-color);
    background-color: var(--light-bg);
}

.btn-success {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    font-weight: 500;
    letter-spacing: 0.5px;
    transition: var(--transition);
}

.btn-success:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
}

.btn-outline-success {
    color: var(--primary-color);
    border-color: var(--primary-color);
    transition: var(--transition);
}

.btn-outline-success:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.alert {
    border: none;
    border-radius: 1rem;
    padding: 1rem 1.5rem;
}

.alert-success {
    background-color: rgba(37, 211, 102, 0.1);
    color: var(--primary-color);
}

.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-text {
    font-size: 0.875rem;
    color: #6C757D;
}

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

#result {
    animation: fadeIn 0.3s ease-out;
}

/* Animação do ícone de raio */
@keyframes lightning {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.fa-bolt {
    animation: lightning 2s infinite;
    display: inline-block;
}

/* Responsividade */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .card {
        margin: 0 10px;
    }

    .card-body {
        padding: 1.5rem !important;
    }
    
    .btn {
        padding: 0.75rem 1rem;
    }
}

/* Customização do scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--light-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-hover);
}

/* Cards de Ferramentas */
.tool-card {
    position: relative;
    border-radius: 1rem;
    padding: 1.5rem;
    color: white;
    overflow: hidden;
    transition: var(--transition);
    height: 100%;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.tool-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tool-content {
    flex-grow: 1;
}

.tool-content h3 {
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.tool-content p {
    margin-bottom: 1rem;
    opacity: 0.9;
    font-size: 0.9rem;
}

.tool-card .btn-light {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: var(--transition);
}

.tool-card .btn-light:hover {
    background: white;
    color: var(--text-color);
    transform: translateY(-2px);
}

/* Gradientes */
.bg-gradient-primary {
    background: linear-gradient(135deg, #4e73df 0%, #224abe 100%);
}

.bg-gradient-success {
    background: linear-gradient(135deg, #1cc88a 0%, #169b6b 100%);
}

.bg-gradient-info {
    background: linear-gradient(135deg, #36b9cc 0%, #258391 100%);
}

.bg-gradient-warning {
    background: linear-gradient(135deg, #f6c23e 0%, #dda20a 100%);
}

/* Efeitos de Hover */
.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
    opacity: 0;
    transition: var(--transition);
}

.tool-card:hover::before {
    opacity: 1;
}

/* Responsividade para os cards */
@media (max-width: 768px) {
    .tool-card {
        padding: 1.25rem;
    }
    
    .tool-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .tool-content h3 {
        font-size: 1rem;
    }
    
    .tool-content p {
        font-size: 0.85rem;
    }
}

/* Estilos específicos para o Gerador de QR Code */
.btn-check:checked + .btn-outline-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.form-control-color {
    height: 38px;
    padding: 0.375rem;
    border-radius: 0.5rem;
    cursor: pointer;
}

.form-control-color::-webkit-color-swatch-wrapper {
    padding: 0;
}

.form-control-color::-webkit-color-swatch {
    border: none;
    border-radius: 0.5rem;
}

#qrCode {
    display: inline-block;
    padding: 1rem;
    background: white;
    border-radius: 1rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

#qrCode img {
    display: block;
    max-width: 100%;
    height: auto;
    transition: all 0.3s ease;
}

.btn-group .btn {
    border-radius: 0.5rem;
    padding: 0.5rem 1rem;
}

.btn-group .btn:first-child {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.btn-group .btn:last-child {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

/* Gradiente adicional para o card de QR Code */
.bg-gradient-danger {
    background: linear-gradient(135deg, #e74a3b 0%, #be2617 100%);
}

/* Responsividade do Menu */
@media (max-width: 991.98px) {
    .navbar-collapse {
        background: white;
        padding: 1rem;
        border-radius: 0.5rem;
        box-shadow: var(--shadow);
        margin-top: 1rem;
    }

    .nav-link {
        padding: 0.75rem 1rem !important;
    }

    .nav-link.active::after {
        display: none;
    }
}

/* Estilos para a página de Hashtags */
.text-purple {
    color: #6f42c1 !important;
}

.bg-purple {
    background-color: #6f42c1 !important;
}

.btn-purple {
    background-color: #6f42c1;
    border-color: #6f42c1;
    color: white;
}

.btn-purple:hover {
    background-color: #5a32a3;
    border-color: #5a32a3;
    color: white;
}

.btn-outline-purple {
    color: #6f42c1;
    border-color: #6f42c1;
}

.btn-outline-purple:hover {
    background-color: #6f42c1;
    border-color: #6f42c1;
    color: white;
}

.btn-check:checked + .btn-outline-purple {
    background-color: #6f42c1;
    border-color: #6f42c1;
    color: white;
}

.alert-purple {
    background-color: #f3e8ff;
    border-color: #e9d8ff;
    color: #6f42c1;
}

.badge.bg-purple {
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.badge.bg-purple:hover {
    transform: scale(1.05);
    cursor: pointer;
}

/* Animação para o ícone de raio */
@keyframes lightning {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.fa-bolt {
    display: inline-block;
    animation: lightning 2s infinite;
}

/* Gradientes para os cards */
.bg-gradient-purple {
    background: linear-gradient(45deg, #6f42c1, #9b6dff);
}

/* Menu Flutuante de Ferramentas */
.floating-menu {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
}

.floating-menu .btn-floating {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(45deg, #6f42c1, #9b6dff);
    box-shadow: 0 4px 15px rgba(111, 66, 193, 0.3);
    border: none;
    color: white;
    font-size: 24px;
    transition: all 0.3s ease;
}

.floating-menu .btn-floating:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(111, 66, 193, 0.4);
}

.floating-menu .tools-dropdown {
    position: absolute;
    bottom: 70px;
    right: 0;
    background: white;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    padding: 15px;
    min-width: 280px;
    max-height: 400px;
    overflow-y: auto;
    display: none;
    animation: slideUp 0.3s ease;
}

.floating-menu .tools-dropdown.show {
    display: block;
}

.floating-menu .tools-dropdown .tool-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    color: #333;
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.2s ease;
    margin-bottom: 5px;
}

.floating-menu .tools-dropdown .tool-item:hover {
    background: #f8f9fa;
    transform: translateX(5px);
}

.floating-menu .tools-dropdown .tool-item i {
    width: 30px;
    text-align: center;
    margin-right: 10px;
    font-size: 1.1rem;
}

.floating-menu .tools-dropdown .tool-item.active {
    background: #f3e8ff;
    color: #6f42c1;
}

/* Customização da scrollbar do menu flutuante */
.floating-menu .tools-dropdown::-webkit-scrollbar {
    width: 6px;
}

.floating-menu .tools-dropdown::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.floating-menu .tools-dropdown::-webkit-scrollbar-thumb {
    background: #6f42c1;
    border-radius: 3px;
}

.floating-menu .tools-dropdown::-webkit-scrollbar-thumb:hover {
    background: #5a32a3;
}

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

/* Estilos do Rodapé */
.footer {
    background-color: #fff;
    padding: 2rem 0;
    margin-top: 4rem;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.footer-content {
    text-align: center;
    color: #6c757d;
}

.footer-content p {
    margin: 0.5rem 0;
}

.footer-content .copyright {
    font-size: 0.9rem;
}

.footer-content .credits {
    font-size: 0.8rem;
}

.footer-content .credits a {
    color: #0d6efd;
    text-decoration: none;
}

.footer-content .credits a:hover {
    text-decoration: underline;
}

/* Estilos para os cards aleatórios */
#randomCards .card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#randomCards .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

#randomCards .icon-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

#randomCards .icon-circle i {
    font-size: 24px;
    color: white;
}

#randomCards .card-title {
    color: #333;
    font-weight: 600;
    margin-bottom: 10px;
}

#randomCards .card-text {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Estilos para os ícones circulares na seção de explicação */
.icon-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.icon-circle i {
    font-size: 1.2rem;
}

.icon-circle:hover {
    transform: scale(1.1);
}

/* Estilos para o botão de expansão */
#toggleExplanation {
    color: inherit;
}

#toggleExplanation:hover {
    color: var(--primary-color);
}

#toggleExplanation:focus {
    box-shadow: none;
}

.transition-icon {
    transition: transform 0.3s ease;
}

#toggleExplanation[aria-expanded="true"] .transition-icon {
    transform: rotate(180deg);
}

.explanation-content {
    overflow: hidden;
    transition: all 0.3s ease;
}

/* Estilos para a seção Como funciona? */
.explanation-container {
    margin-top: 2rem;
}

.explanation-container .card {
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.explanation-container .card-header {
    border: none;
    padding: 1rem;
}

.explanation-container .card-body {
    padding: 1.5rem;
}

.explanation-item {
    margin-bottom: 1.5rem;
    padding: 0.5rem;
}

.explanation-item:last-child {
    margin-bottom: 0;
}

.explanation-item i {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.explanation-item h6 {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.explanation-item p {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 0;
}

/* Estilos do Menu Superior */
.dropdown-menu {
    border: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-radius: 10px;
    padding: 0.5rem;
}

.dropdown-item {
    padding: 0.5rem 1rem;
    border-radius: 5px;
    color: #333;
}

.dropdown-item:hover {
    background-color: #f8f9fa;
    color: #25D366;
}

.dropdown-item i {
    width: 20px;
    text-align: center;
}