:root {
    --md-sys-color-primary: #6750A4;
    --md-sys-color-on-primary: #FFFFFF;
    --md-sys-color-primary-container: #EADDFF;
    --md-sys-color-on-primary-container: #21005D;
    --md-sys-color-secondary: #625B71;
    --md-sys-color-on-secondary: #FFFFFF;
    --md-sys-color-secondary-container: #E8DEF8;
    --md-sys-color-on-secondary-container: #1D192B;
    --md-sys-color-tertiary: #7D5260;
    --md-sys-color-on-tertiary: #FFFFFF;
    --md-sys-color-tertiary-container: #FFD8E4;
    --md-sys-color-on-tertiary-container: #31111D;
    --md-sys-color-error: #BA1A1A;
    --md-sys-color-error-container: #FFDAD6;
    --md-sys-color-on-error: #FFFFFF;
    --md-sys-color-on-error-container: #410002;
    --md-sys-color-background: #FFFBFE;
    --md-sys-color-on-background: #1C1B1F;
    --md-sys-color-surface: #FFFBFE;
    --md-sys-color-on-surface: #1C1B1F;
    --md-sys-color-surface-variant: #E7E0EC;
    --md-sys-color-on-surface-variant: #49454F;
    --md-sys-color-outline: #79747E;
    --md-sys-color-inverse-on-surface: #F4EFF4;
    --md-sys-color-inverse-surface: #313033;
    --md-sys-color-inverse-primary: #D0BCFF;
    --md-sys-color-shadow: rgba(0, 0, 0, 0.2);
    --md-sys-color-surface-tint: #6750A4;
    --md-sys-color-outline-variant: #CAC4D0;
    --md-sys-elevation-level1: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --md-sys-elevation-level2: 0 3px 6px rgba(0, 0, 0, 0.16), 0 3px 6px rgba(0, 0, 0, 0.23);
    --md-sys-elevation-level3: 0 10px 20px rgba(0, 0, 0, 0.19), 0 6px 6px rgba(0, 0, 0, 0.23);
    --md-sys-elevation-level5: 0 19px 38px rgba(0, 0, 0, 0.30), 0 15px 12px rgba(0, 0, 0, 0.22);
}

[data-theme-mode="amoled"] {
    --md-sys-color-error: #FFB4AB;
    --md-sys-color-error-container: #93000A;
    --md-sys-color-on-error: #690005;
    --md-sys-color-on-error-container: #FFDAD6;
    --md-sys-color-background: #000000;
    --md-sys-color-on-background: #E6E1E5;
    --md-sys-color-surface: #000000;
    --md-sys-color-on-surface: #E6E1E5;
    --md-sys-color-surface-variant: #000000;
    --md-sys-color-on-surface-variant: #CAC4D0;
    --md-sys-color-outline: #938F99;
    --md-sys-color-inverse-on-surface: #000000;
    --md-sys-color-inverse-surface: #E6E1E5;
    --md-sys-color-shadow: rgba(0, 0, 0, 0.9);
    --md-sys-color-outline-variant: #49454F;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scrollbar-width: none;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--md-sys-color-background);
    color: var(--md-sys-color-on-background);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1.7;
    overflow-x: hidden;
}

.fundo-espiral {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    opacity: 0.5;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    animation: float 20s infinite ease-in-out;
    will-change: transform;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, var(--md-sys-color-primary) 0%, var(--md-sys-color-tertiary) 100%);
    top: -10%;
    right: -10%;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(225deg, var(--md-sys-color-secondary) 0%, var(--md-sys-color-primary) 100%);
    bottom: -5%;
    left: -5%;
    animation-delay: 7s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -30px) scale(1.1); }
    50% { transform: translate(-20px, 20px) scale(0.9); }
    75% { transform: translate(40px, 10px) scale(1.05); }
}

.container-principal {
    width: 100%;
    max-width: 800px;
    padding: 20px;
    margin: 40px auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cabecalho-pagina {
    width: 100%;
    display: flex;
    justify-content: flex-end;
    margin-bottom: 20px;
}

.seletor-idioma {
    display: flex;
    gap: 8px;
    background-color: var(--md-sys-color-surface-variant);
    padding: 6px;
    border-radius: 50px;
}

.botao-idioma {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--md-sys-color-on-surface-variant);
    font-family: 'Roboto', sans-serif;
    font-weight: 500;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.botao-idioma.ativo {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
}

.carta-conteudo {
    background-color: var(--md-sys-color-surface);
    border-radius: 28px;
    padding: 40px;
    box-shadow: var(--md-sys-elevation-level2);
    border: 1px solid var(--md-sys-color-outline-variant);
    width: 100%;
    animation: fadeIn 1s ease-out;
}

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

.titulo-central {
    text-align: center;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 30px;
    background: linear-gradient(45deg, var(--md-sys-color-primary), var(--md-sys-color-tertiary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.texto-corpo p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--md-sys-color-on-surface-variant);
    text-align: justify;
}

.texto-corpo a {
    color: var(--md-sys-color-primary);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px dashed var(--md-sys-color-primary);
    transition: all 0.2s ease;
}

.texto-corpo a:hover {
    color: var(--md-sys-color-tertiary);
    border-color: var(--md-sys-color-tertiary);
}

.assinatura {
    margin-top: 40px;
    text-align: right;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 5px;
    color: var(--md-sys-color-on-background);
    font-weight: 500;
}

.assinatura-projeto {
    font-size: 0.9rem;
    color: var(--md-sys-color-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 700;
}

.area-botoes {
    margin-top: 40px;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.botao-primario, .botao-secundario {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    border-radius: 100px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    border: none;
    position: relative;
    overflow: hidden;
}

.botao-primario {
    background-color: var(--md-sys-color-primary);
    color: var(--md-sys-color-on-primary);
    box-shadow: var(--md-sys-elevation-level1);
}

.botao-primario:hover {
    box-shadow: var(--md-sys-elevation-level3);
    transform: translateY(-2px);
}

.botao-secundario {
    background-color: var(--md-sys-color-surface-variant);
    color: var(--md-sys-color-on-surface-variant);
    border: 1px solid var(--md-sys-color-outline);
}

.botao-secundario:hover {
    background-color: var(--md-sys-color-inverse-surface);
    color: var(--md-sys-color-inverse-on-surface);
    border-color: transparent;
}

.sobreposicao-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.sobreposicao-modal.ativo {
    opacity: 1;
    visibility: visible;
}

.modal-conteudo {
    background-color: var(--md-sys-color-surface);
    border-radius: 28px;
    padding: 30px;
    max-width: 500px;
    width: 90%;
    box-shadow: var(--md-sys-elevation-level5);
    transform: scale(0.9);
    transition: transform 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
    border: 2px solid var(--md-sys-color-primary);
}

.sobreposicao-modal.ativo .modal-conteudo {
    transform: scale(1);
}

.modal-cabecalho {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-titulo {
    font-size: 1.5rem;
    color: var(--md-sys-color-on-surface);
}

.botao-fechar-modal {
    background: var(--md-sys-color-surface-variant);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--md-sys-color-on-surface-variant);
    transition: background 0.2s;
}

.botao-fechar-modal:hover {
    background: var(--md-sys-color-secondary-container);
}

.modal-corpo p {
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.6;
    margin-bottom: 20px;
}

.modal-rodape {
    display: flex;
    justify-content: flex-end;
}

.botao-modal-principal {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: var(--md-sys-color-tertiary);
    color: var(--md-sys-color-on-tertiary);
    padding: 12px 20px;
    border-radius: 20px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.2s ease;
}

.botao-modal-principal:hover {
    box-shadow: var(--md-sys-elevation-level2);
    transform: translateY(-2px);
}

@media (max-width: 600px) {
    .carta-conteudo {
        padding: 20px;
    }
    .titulo-central {
        font-size: 2rem;
    }
    .area-botoes {
        flex-direction: column;
    }
    .botao-primario, .botao-secundario {
        width: 100%;
        justify-content: center;
    }
}