* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-margin-top: 100px;
}

:root {
    --bg-color: #FDFDFD;
    --bg-color-alt: #f7f9fc;
    --text-color: #212121;
    --accent-color: #005fcc;
    --accent-color-darker: #004a9e;
    --card-bg: #FFFFFF;
    --border-color: #E0E0E0;
    --font-primary: 'Lato', sans-serif;
    --font-secondary: 'Poppins', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--accent-color-darker);
}

h2 {
    font-family: var(--font-secondary);
    font-size: 2.5rem;
    margin-bottom: 40px;
    text-align: center;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 3px solid var(--accent-color);
    outline-offset: 2px;
    border-radius: 4px;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    z-index: -999;
}

.skip-link:focus {
    position: fixed;
    top: 10px;
    left: 10px;
    background-color: var(--accent-color);
    color: white;
    padding: 15px;
    z-index: 9999;
    width: auto;
    height: auto;
    overflow: auto;
    border-radius: 8px;
    text-decoration: none;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    border: 1px solid transparent;
    font-family: var(--font-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
    text-align: center;
}

.btn:hover {
    transform: translateY(-2px);
}

.btnPrimary {
    background-color: var(--accent-color);
    color: white;
}

.btnPrimary:hover {
    background-color: var(--accent-color-darker);
    color: white;
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-color);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: #f0f0f0;
}

.navbar {
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(253, 253, 253, 0.95);
    backdrop-filter: blur(5px);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-secondary);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-color);
}

.navLinks {
    display: flex;
    list-style: none;
    gap: 30px;
}

.navLinks a {
    font-size: 1.1rem;
    font-weight: 600;
}

.navLogin {
    display: flex;
    gap: 30px;
}

.hero {
    text-align: center;
    padding: 80px 0;
    background: linear-gradient(180deg, #EBF4FF 0%, var(--bg-color) 70%);
}

.hero h1 {
    font-family: var(--font-secondary);
    font-size: 3.5rem;
    max-width: 800px;
    margin: 0 auto 1rem;
}

.hero p {
    font-size: 1.25rem;
    color: #555;
    max-width: 600px;
    margin: 0 auto;
}

.catalog {
    padding: 60px 0;
}

.cardGrid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    color: var(--text-color);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.card h3 {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.card p {
    color: #555;
}

.livroSecao {
    padding: 60px 0;
}

.livroSecao:nth-of-type(even) {
    background-color: var(--bg-color-alt);
}

.livroSecao .livrosGrid {
    display: flex;
    gap: 30px;
    overflow-x: auto;
    padding: 4px 0 20px 4px;
    margin-left: -4px;
    justify-content: center;
}

.livro-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    text-align: left;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    width: 280px;
    flex-shrink: 0;
}

.livro-card img {
    width: 100%;
    height: 250px;
    object-fit: contain;
}

.livro-card-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.livro-card-content h3 {
    font-family: var(--font-secondary);
    font-size: 1.2rem;
    margin-bottom: 5px;
    text-align: left;
}

.livro-card-content p {
    color: #777;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.livro-card-content .btn {
    margin-top: auto;
}

.ctaSection {
    padding: 80px 0;
    text-align: center;
    background-color: var(--accent-color);
    color: white;
}

.ctaSection h2 {
    color: white;
}

.ctaSection p {
    max-width: 500px;
    margin: -20px auto 30px;
    opacity: 0.9;
}

.btnCta {
    background-color: white;
    color: var(--accent-color);
    padding: 15px 30px;
    font-size: 1.1rem;
}

.btnCta:hover {
    background-color: #f0f0f0;
    color: var(--accent-color-darker);
}

.footer {
    text-align: center;
    padding: 40px 0;
}

.modalOverflay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 2000;
}

.modalOverflay.visible {
    display: flex;
}

.modal {
    background-color: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 500px;
    position: relative;
}

.modalHeader {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.modalHeader h2 {
    font-size: 1.8rem;
    margin: 0;
}

.modalCloseBtn {
    background: none;
    border: none;
    font-size: 2.5rem;
    line-height: 1;
    cursor: pointer;
    color: #888;
}

.formGrupo {
    margin-bottom: 20px;
}

.formGrupo label {
    display: block;
    margin-bottom: 5px;
    font-weight: 700;
}

.formGrupo input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
}

.formSubmitBtn {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
}

.widgetAcessivel {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 1001;
}

#btnAcessivel {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--accent-color);
    color: white;
    font-size: 2rem;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.painelAcessivel {
    display: none;
    position: absolute;
    bottom: 70px;
    left: 0;
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    width: 200px;
    overflow: hidden;
}

.painelAcessivel.visible {
    display: block;
}

.painelAcessivel button {
    display: block;
    width: 100%;
    padding: 15px;
    background: none;
    border: none;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
    cursor: pointer;
}

.painelAcessivel button:hover {
    background-color: #f0f0f0;
}

.painelAcessivel button:last-child {
    border-bottom: none;
}

body.high-contrast {
    --bg-color: #000000;
    --bg-color-alt: #000000;
    --text-color: #FFFFFF;
    --accent-color: #3399FF;
    --accent-color-darker: #1E88E5;
    --card-bg: #121212;
    --border-color: #CCCCCC;
}

body.high-contrast .hero,
body.high-contrast .livroSecao:nth-of-type(even) {
    background: var(--bg-color);
}

body.high-contrast .hero p,
body.high-contrast .card p,
body.high-contrast .livro-card-content p,
body.high-contrast .footer,
body.high-contrast .logo,
body.high-contrast .modalCloseBtn,
body.high-contrast .formGrupo label {
    color: var(--text-color);
}

body.high-contrast .btn-secondary:hover {
    background-color: #333;
}

body.high-contrast .navbar {
    background-color: #121212;
    border-bottom-color: var(--border-color);
}

body.high-contrast .modal {
    background-color: #121212;
    border: 1px solid var(--border-color);
}

body.high-contrast .modalHeader {
    border-bottom-color: var(--border-color);
}

body.high-contrast .formGrupo input {
    background-color: #000;
    color: var(--text-color);
    border-color: var(--border-color);
}

body.high-contrast .ctaSection {
    background-color: #000;
    border-top: 2px solid var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
}

body.high-contrast .btnCta {
    color: #000;
    background-color: var(--accent-color);
}

body.high-contrast .btnCta:hover {
    color: #000;
    background-color: var(--accent-color-darker);
}

body.high-contrast .painelAcessivel {
    background-color: #121212;
    border: 1px solid var(--border-color);
}

body.high-contrast .painelAcessivel button {
    color: var(--text-color);
    border-bottom-color: var(--border-color);
}

body.high-contrast .painelAcessivel button:hover {
    background-color: #333;
}

.modalCloseBody {
    display: flex;
    gap: 20px;
}

.modalCloseBody img {
    width: 150px;
    height: auto;
    border-radius: 4px;
    flex-shrink: 0;
}

.modalCloseBody h3 {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    margin-bottom: 5px;
}

.modalCloseBody p {
    line-height: 1.7;
}

.logo img {
    height: 150px;
    width: auto;
    display: block;
}

#btnAcessivel img {
    width: 35px;
    height: 35px;
    vertical-align: middle;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .navLinks,
    .navLogin {
        display: none;
    }

    
    .navbar .container {
        justify-content: center; 
    }

    .livroSecao .container {
        padding: 0; 
    }

    .livroSecao .livrosGrid {
        justify-content: flex-start; 
        padding-left: 20px;  
        padding-right: 20px; 
    }
}

@media (max-width: 500px) {
    .modalCloseBody {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}