:root {
    --cor-primaria: #2B8AC9;
    --cor-secundaria: #78d69c;
    --fundo-claro: #ffffff;
    --texto-claro: #2d3748;
    --fundo-escuro: #1a202c;
    --texto-escuro: #ffffff;
    --velocidade-transicao: 0.3s;
    --borda-arredondada: 8px;
    --sombra: 0 2px 8px rgba(0, 0, 0, 0.1);
    --foco: 0 0 0 3px rgba(43, 138, 201, 0.2);
}

/* Reset e Base */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 100%;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    background-color: var(--fundo-claro);
    color: var(--texto-claro);
    transition: 
        background-color var(--velocidade-transicao), 
        color var(--velocidade-transicao);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Acessibilidade */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--cor-primaria);
    color: white;
    padding: 0.75rem 1rem;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.skip-link:focus {
    transform: translateY(40px);
}

/* Header */
.main-header {
    background-color: var(--cor-primaria);
    padding: 1.5rem 1rem;
    box-shadow: var(--sombra);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.logo {
    color: white;
    font-size: clamp(1.25rem, 5vw, 1.75rem);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-description {
    text-align: center;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 0.5rem;
    font-size: clamp(0.875rem, 3vw, 1rem);
}

/* Theme Switch */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
}

.theme-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

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

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

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

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

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

/* Input Section */
.input-section {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
    width: 100%;
}

.input-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    border: 2px solid var(--cor-primaria);
    border-radius: var(--borda-arredondada);
    padding: 1rem;
    background-color: var(--fundo-claro);
    transition: border-color var(--velocidade-transicao);
}

.text-input {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: var(--borda-arredondada);
    box-shadow: var(--sombra);
    resize: vertical;
    min-height: 150px;
    transition: 
        border-color var(--velocidade-transicao), 
        box-shadow var(--velocidade-transicao);
}

.text-input:focus {
    outline: none;
    border-color: var(--cor-primaria);
    box-shadow: var(--foco);
}

.input-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

.icon-button {
    background-color: transparent;
    border: none;
    cursor: pointer;
    font-size: 1.5rem;
    color: var(--cor-primaria);
    padding: 0.5rem;
    border-radius: 50%;
    transition: all var(--velocidade-transicao);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-button:hover,
.icon-button:focus {
    background-color: rgba(43, 138, 201, 0.1);
    transform: scale(1.1);
}

/* Ferramentas */
.tools-section {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    width: 100%;
}

.section-title {
    color: var(--cor-primaria);
    text-align: center;
    margin-bottom: 1rem;
}

.tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.tool-card {
    padding: 1.5rem;
    border: 2px solid var(--cor-primaria);
    border-radius: var(--borda-arredondada);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    background-color: var(--fundo-claro);
    cursor: pointer;
    transition: all var(--velocidade-transicao);
    text-align: center;
    letter-spacing: 0.1rem;
    font-weight: 600;
}

.tool-card:hover,
.tool-card:focus {
    transform: translateY(-2px);
    box-shadow: var(--sombra);
    background-color: rgba(43, 138, 201, 0.05);
}

.tool-icon {
    font-size: 2rem;
    color: var(--cor-primaria);
}

/* Área de output */
.output-status {
    max-width: 600px;
    text-align: center;
    margin: 0 auto;
    color: var(--cor-secundaria);
    font-weight: 600;
    text-align: center;
}
.output-wrapper {
    display: flex;
    flex-direction: column;
}
/* Footer */
.main-footer {
    background-color: var(--cor-primaria);
    padding: 1.5rem 1rem;
    color: white;
    text-align: center;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-content a {
    color: white;
    text-decoration: none;
    transition: opacity var(--velocidade-transicao);
}

.footer-content a:hover {
    opacity: 0.8;
}

.text-size-button {
    background-color: transparent;
    border: 2px solid white;
    color: white;
    font-size: 1rem;
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: var(--borda-arredondada);
    transition: all var(--velocidade-transicao);
    margin: 0 0.25rem;
}

.text-size-button:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Dark Mode */
body.dark-mode {
    background-color: var(--fundo-escuro);
    color: var(--texto-escuro);
}

body.dark-mode .input-wrapper,
body.dark-mode .tool-card {
    background-color: #2d3748;
    border-color: #4a5568;
}

body.dark-mode .text-input {
    background-color: #2d3748;
    color: var(--texto-escuro);
    border-color: #4a5568;
}

/* Responsividade */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .tool-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
}

@media (max-width: 480px) {
    .input-actions {
        justify-content: center;
    }

    .tool-grid {
        grid-template-columns: 1fr;
    }
}



/* FORMULÁRIO DE FEEDBACK */
.feedback-section {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}