/* ==========================================================================
   GABRIEL C. GONÇALVES — PORTFÓLIO DESIGN GRÁFICO (AUTÊNTICO & ELEGANTE)
   Fiel ao Design System do Portfólio PDF (Off-White, Blue, Lavender & Black)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Variáveis & Design Tokens (Baseados no PDF)
   -------------------------------------------------------------------------- */
:root {
    /* Cores Principais do Portfólio PDF */
    --bg-main: #F4F3EF;          /* Off-white quente original das páginas */
    --bg-card: #FFFFFF;          /* Branco puro para cards/polaroids */
    --bg-panel: #EAE8E1;         /* Cinza claro para áreas de apoio */
    
    --brand-blue: #005AD5;       /* Azul elétrico ajustado para contraste (Acessibilidade) */
    --brand-purple: #C3B1E1;     /* Lilás/Lavanda das pílulas e rótulos páginas 4, 6, 8 */
    --brand-dark-purple: #8C52FF;/* Roxo forte da página 11 */
    --brand-black: #111111;      /* Preto profundo para tipografia e setas */
    --brand-text-muted: #555555; /* Texto secundário */

    --border-dark: #111111;
    --border-light: rgba(0, 0, 0, 0.1);

    /* Tipografia */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;

    /* Raio de Borda (Pílulas & Cards do PDF) */
    --radius-pill: 50px;
    --radius-card: 20px;
    --radius-sm: 12px;

    /* Sombra Fiel às Fotos do PDF */
    --shadow-polaroid: 0 12px 30px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.14);
}

/* Modo Escuro Sofisticado (Preserva o Azul e Lavanda da Marca) */
[data-theme="dark"] {
    --bg-main: #121316;
    --bg-card: #1C1E24;
    --bg-panel: #262932;

    --brand-black: #FFFFFF;
    --brand-text-muted: #A0A5B5;

    --border-dark: #FFFFFF;
    --border-light: rgba(255, 255, 255, 0.12);

    --shadow-polaroid: 0 12px 30px rgba(0, 0, 0, 0.4);
    --shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.6);
}

/* --------------------------------------------------------------------------
   2. Reset & Estilos Base
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-main);
    color: var(--brand-black);
    font-family: var(--font-body);
    transition: background-color 0.3s ease, color 0.3s ease;
}

body {
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    width: 100%;
    max-width: 100vw;
}

img, picture, video, canvas, svg, iframe {
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul {
    list-style: none;
}

/* Top Banner Azul (Curva da capa do PDF) */
.top-brand-banner {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 180px;
    background: var(--brand-blue);
    border-bottom-left-radius: 50% 30px;
    border-bottom-right-radius: 50% 30px;
    z-index: 1;
}

.container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 1.5rem;
    position: relative;
    z-index: 2;
}

/* --------------------------------------------------------------------------
   3. Pílulas & Badges (Assinatura Visual do PDF)
   -------------------------------------------------------------------------- */
.pill-badge {
    display: inline-block;
    padding: 0.5rem 1.4rem;
    border-radius: var(--radius-pill);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 1px;
    text-transform: uppercase;
    border: 2px solid var(--border-dark);
}

.pill-purple {
    background-color: var(--brand-purple);
    color: #111111;
}

.pill-blue {
    background-color: var(--brand-blue);
    color: #FFFFFF;
}

.pill-white {
    background-color: #FFFFFF;
    color: #111111;
}

/* Botões Estilo Pílula */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 0.95rem;
    padding: 0.85rem 1.8rem;
    border-radius: var(--radius-pill);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    border: 2px solid var(--border-dark);
}

.btn-black {
    background-color: var(--brand-black);
    color: var(--bg-main);
}

.btn-black:hover {
    transform: translateY(-2px);
    background-color: var(--brand-blue);
    color: #FFF;
}

.btn-blue {
    background-color: var(--brand-blue);
    color: #FFFFFF;
}

.btn-blue:hover {
    transform: translateY(-2px);
    background-color: var(--brand-black);
    color: var(--bg-main);
}

.btn-outline {
    background-color: transparent;
    color: var(--brand-black);
}

.btn-outline:hover {
    background-color: var(--brand-purple);
    color: #111;
}

.btn-lg {
    padding: 1.1rem 2.4rem;
    font-size: 1.05rem;
}

.btn-full {
    width: 100%;
}

.arrow-icon, .arrow-big {
    font-family: var(--font-heading);
    font-weight: 900;
}

/* --------------------------------------------------------------------------
   4. Navbar Cabeçalho (Melhorada para Modo Claro/Escuro sem Elementos Sumidos)
   -------------------------------------------------------------------------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: 1.1rem 0;
    background: rgba(244, 243, 239, 0.85); /* Fundo off-white com blur */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 2px solid var(--border-dark);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

[data-theme="dark"] .navbar {
    background: rgba(18, 19, 22, 0.85); /* Fundo escuro com blur */
}

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

.brand-logo {
    display: flex;
    flex-direction: column;
}

.logo-name {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 900;
    color: var(--brand-black);
}

.logo-subtitle {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--brand-text-muted);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 1.8rem;
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--brand-black);
    text-transform: uppercase;
}

.nav-link:hover {
    color: var(--brand-blue);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 2px solid var(--border-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--brand-black);
    transition: border-color 0.3s ease, color 0.3s ease, background-color 0.3s ease;
}

.theme-toggle:hover {
    border-color: var(--brand-blue);
    color: var(--brand-blue);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger-bar {
    width: 25px;
    height: 3px;
    background: var(--brand-black);
    transition: background-color 0.3s ease;
}

/* --------------------------------------------------------------------------
   5. Hero Section
   -------------------------------------------------------------------------- */
.hero {
    padding: 10rem 0 0 0; /* Espaço reduzido embaixo para a foto ficar colada na marquee */
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    align-items: flex-end;
    gap: 2rem;
}

.hero-text-content {
    padding-bottom: 4rem; /* Alinha o texto enquanto a foto encosta embaixo */
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.hero-image-content {
    display: flex;
    justify-content: center;
    align-items: flex-end;
}

.hero-photo {
    width: 100%;
    max-width: 500px;
    height: auto;
    object-fit: contain;
    display: block;
}

.hero-header-badge {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.arrow-big {
    font-size: 2.5rem;
    color: var(--brand-black);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 7vw, 5.5rem);
    font-weight: 900;
    line-height: 0.95;
    letter-spacing: -1px;
    margin-bottom: 1.5rem;
    color: var(--brand-black);
}

.hero-title-outlined {
    color: transparent;
    -webkit-text-stroke: 2px var(--brand-black);
}

.hero-tagline {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--brand-text-muted);
    max-width: 680px;
    margin-bottom: 2.5rem;
}

.hero-cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
}

/* --------------------------------------------------------------------------
   6. Marquee Animada
   -------------------------------------------------------------------------- */
.marquee-container {
    background-color: var(--brand-black);
    color: var(--bg-main);
    padding: 1.2rem 0;
    overflow: hidden;
    display: flex;
    white-space: nowrap;
    border-top: 2px solid var(--border-dark);
    border-bottom: 2px solid var(--border-dark);
}

.marquee-content {
    display: inline-flex;
    animation: marquee 25s linear infinite;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: 2px;
}

.marquee-content span {
    padding: 0 1rem;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* --------------------------------------------------------------------------
   7. Quem Sou Eu / Bio
   -------------------------------------------------------------------------- */
.bio-section {
    padding: 5rem 0;
    display: flex;
    justify-content: center;
}

.eu-img-badge {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background: var(--brand-blue);
    color: #FFFFFF;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 800;
    padding: 0.5rem 1.2rem;
    border-radius: var(--radius-pill);
    border: 2px solid var(--border-dark);
}

.sobre-text-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: var(--radius-card);
    border: 2px solid var(--border-dark);
    box-shadow: var(--shadow-polaroid);
}

.section-arrow {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 900;
    line-height: 1;
}

.section-hero-heading {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1;
}

.lead-text {
    font-size: 1.15rem;
    font-weight: 500;
    margin-bottom: 1.2rem;
}

.experience-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.chip {
    padding: 0.8rem 1.2rem;
    border-radius: var(--radius-sm);
    background: var(--bg-panel);
    border: 1px solid var(--border-dark);
    display: flex;
    flex-direction: column;
    font-size: 0.85rem;
}

.chip strong {
    font-family: var(--font-heading);
    color: var(--brand-black);
}

.chip span {
    color: var(--brand-text-muted);
}

/* --------------------------------------------------------------------------
   8. Serviços & Experiência
   -------------------------------------------------------------------------- */
.servicos-section {
    padding: 6rem 0;
    background-color: var(--bg-panel);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

@media (max-width: 1100px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
}

.service-block {
    background: var(--bg-card);
    padding: 2.5rem 2rem;
    border-radius: var(--radius-card);
    border: 2px solid var(--border-dark);
    box-shadow: var(--shadow-polaroid);
    transition: transform 0.3s ease;
}

.service-block:hover {
    transform: translateY(-8px);
}

.highlight-service {
    border-color: var(--brand-blue);
    background: linear-gradient(180deg, rgba(0, 163, 255, 0.08), var(--bg-card));
}

.service-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 900;
    color: var(--brand-blue);
    margin-bottom: 1rem;
}

.service-block h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.service-block p {
    color: var(--brand-text-muted);
    font-size: 0.95rem;
}

/* --------------------------------------------------------------------------
   9. Showroom Portfólio (Cards Polaroid Melhorados para Imagens Reais)
   -------------------------------------------------------------------------- */
.portfolio-section {
    padding: 6rem 0;
}

.carousel-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    background: var(--bg-card);
    border: 2px solid var(--border-dark);
    color: var(--brand-black);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: var(--shadow-polaroid);
    transition: all 0.3s ease;
}

.carousel-btn:hover {
    background: var(--brand-blue);
    color: #FFFFFF;
    transform: translateY(-50%) scale(1.1);
}

.prev-btn { left: -25px; }
.next-btn { right: -25px; }

@media (max-width: 768px) {
    .prev-btn { left: 5px; }
    .next-btn { right: 5px; }
}

.portfolio-carousel {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    gap: 1.5rem;
    padding: 1rem 0 2rem 0;
    scrollbar-width: none; /* Firefox hide scrollbar */
    -ms-overflow-style: none;  /* IE and Edge */
    scroll-behavior: smooth;
    width: 100%;
}

.portfolio-carousel::-webkit-scrollbar {
    display: none; /* Chrome Safari hide scrollbar */
}

.carousel-img {
    scroll-snap-align: center;
    height: 340px; /* Altura controlada, similar ao tamanho visual que ocupava antes */
    width: auto;   /* Largura se adapta para manter o formato original da imagem */
    max-width: 85vw; /* Evita que estoure a tela em celulares */
    object-fit: cover;
    border-radius: 12px;
    box-shadow: var(--shadow-polaroid);
    transition: transform 0.3s ease;
    cursor: pointer;
}

.carousel-img:hover {
    transform: scale(1.02);
}

/* --------------------------------------------------------------------------
   10. Seção Calegari Malhas (Web Design)
   -------------------------------------------------------------------------- */
.calegari-web-section {
    display: block;
    padding: 4rem 0;
    background-color: var(--bg-main);
}

.contact-box > *,
.blue-panel-grid > *,
.calegari-panel-grid > * {
    min-width: 0;
    max-width: 100%;
}

.calegari-web-section:hover {
    transform: translateY(-5px);
}

.calegari-panel {
    background-color: #121316; /* Fundo sempre escuro para destacar o premium */
    color: #FFFFFF;
    padding: 4rem 3rem;
    border-radius: var(--radius-card);
    border: 2px solid var(--border-dark);
    box-shadow: var(--shadow-polaroid);
}

.calegari-panel-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.calegari-header {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.calegari-header h2 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    line-height: 1.1;
}

.calegari-desc {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.calegari-mock-browser {
    background: #1C1E24;
    border: 2px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    overflow: hidden;
    height: 100%;
    min-height: 250px;
}

.browser-top {
    background: rgba(255,255,255,0.05);
    padding: 10px 15px;
    display: flex;
    gap: 6px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.browser-top i {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
}

.browser-top i:nth-child(1) { background: #FF5F56; }
.browser-top i:nth-child(2) { background: #FFBD2E; }
.browser-top i:nth-child(3) { background: #27C93F; }

.browser-body {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    height: 100%;
    background: #FFFFFF;
}

@media (max-width: 992px) {
    .calegari-panel-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

/* --------------------------------------------------------------------------
   11. Seção Diagramação ePub
   -------------------------------------------------------------------------- */
.epub-feature-section {
    padding: 4rem 0;
}

.blue-panel {
    background-color: var(--brand-blue);
    color: #FFFFFF;
    padding: 4rem 3rem;
    border-radius: var(--radius-card);
    border: 2px solid var(--border-dark);
}

.blue-panel-header {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.blue-panel-header h2 {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 900;
    line-height: 1.1;
}

.blue-panel-desc {
    font-size: 1.1rem;
    max-width: 850px;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

.epub-highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
    gap: 1.5rem;
    width: 100%;
}

.highlight-item {
    background: rgba(255, 255, 255, 0.12);
    padding: 1.5rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.25);
    display: flex;
    gap: 1rem;
}

.h-icon {
    font-size: 1.4rem;
    font-weight: 900;
}

/* --------------------------------------------------------------------------
   11. Accordions (Cases & FAQ)
   -------------------------------------------------------------------------- */
.cases-section, .faq-section {
    padding: 5rem 0;
}

.accordion-list {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.acc-item {
    background: var(--bg-card);
    border: 2px solid var(--border-dark);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.acc-trigger {
    width: 100%;
    padding: 1.4rem 1.8rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--brand-black);
}

.acc-icon {
    font-size: 1.5rem;
    font-weight: 900;
}

.acc-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 1.8rem;
    color: var(--brand-text-muted);
}

.acc-item.active .acc-panel {
    max-height: 400px;
    padding: 0 1.8rem 1.5rem 1.8rem;
}

.acc-item.active .acc-icon {
    transform: rotate(45deg);
}

/* --------------------------------------------------------------------------
   12. Contato
   -------------------------------------------------------------------------- */
.contato-section {
    padding: 6rem 0;
}

.contact-box {
    background: var(--bg-card);
    border: 2px solid var(--border-dark);
    border-radius: var(--radius-card);
    padding: 3.5rem;
    box-shadow: var(--shadow-polaroid);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3.5rem;
}

.contact-heading {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 3.5vw, 3rem);
    font-weight: 900;
    line-height: 1;
    margin: 1rem 0;
}

.contact-text {
    color: var(--brand-text-muted);
    margin-bottom: 2rem;
}

.direct-contacts {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-link-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.9rem 1.4rem;
    border-radius: var(--radius-pill);
    background: var(--bg-panel);
    border: 2px solid var(--border-dark);
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 0.95rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.contact-form h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 800;
}

.field-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.field-group label {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 800;
}

.field-group input, .field-group select, .field-group textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border-radius: 8px;
    border: 2px solid var(--border-dark);
    background: var(--bg-panel);
    color: var(--brand-black);
    outline: none;
}

/* Garante visibilidade das opções em todos os sistemas operacionais/temas */
select option {
    background-color: var(--bg-card);
    color: var(--brand-black);
}

.form-feedback {
    font-weight: 700;
    font-size: 0.9rem;
    text-align: center;
}


/* Footer */
.footer {
    padding: 2.5rem 0;
    background: var(--brand-black);
    color: var(--bg-main);
    text-align: center;
}

.copy-sub {
    font-size: 0.8rem;
    opacity: 0.7;
    margin-top: 0.4rem;
}

/* Responsividade */
@media (max-width: 900px) {
    .contact-box {
        grid-template-columns: 1fr;
        gap: 2rem;
        padding: 2.5rem 1.5rem;
    }

    .calegari-panel {
        padding: 3rem 1.5rem;
    }

    .blue-panel {
        padding: 3rem 1.5rem;
    }

    .grid-2-col {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background: var(--bg-main);
        padding: 2rem;
        border-bottom: 2px solid var(--border-dark);
        transform: translateY(-150%);
        transition: transform 0.3s ease;
    }

    .nav-menu.active {
        transform: translateY(0);
    }

    .nav-list {
        flex-direction: column;
        gap: 1.5rem;
    }

    .mobile-toggle {
        display: flex;
    }

    .contact-link-pill {
        flex-direction: column;
        text-align: center;
        padding: 0.8rem;
        word-break: break-word;
        max-width: 100%;
        white-space: normal;
    }

    .blue-panel, .calegari-panel, .contact-box {
        padding: 1.5rem 1rem;
        max-width: 100%;
        overflow-wrap: break-word;
    }

    .container {
        padding: 0 1.2rem;
    }
}

/* ==========================================================================
   18. Leitor de ePub Interativo (Tablet)
   ========================================================================== */
.blue-panel-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
    align-items: center;
}

@media (max-width: 992px) {
    .blue-panel-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
}

.blue-panel-reader-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
}

.epub-reader-tablet {
    background: #1e1e24; /* Dark frame by default */
    border: 10px solid #2e2e38;
    border-radius: 28px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
    width: 100%;
    max-width: 380px;
    min-width: 0;
    display: flex;
    flex-direction: column;
    position: relative;
    aspect-ratio: 3 / 4;
    overflow: hidden;
    transition: border-color 0.3s ease, background-color 0.3s ease;
}

[data-theme="dark"] .epub-reader-tablet {
    border-color: #0d0e11;
    background: #121316;
}

.tablet-header {
    height: 30px;
    background: #2e2e38;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    border-bottom: 1px solid rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .tablet-header {
    background: #0d0e11;
}

.tablet-camera {
    width: 7px;
    height: 7px;
    background: #111;
    border-radius: 50%;
    position: absolute;
    left: 20px;
}

.tablet-brand {
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.7rem;
    font-family: var(--font-heading);
    font-weight: 800;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.tablet-screen {
    flex-grow: 1;
    background: #FFFFFF;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    width: 100%;
}

[data-theme="dark"] .tablet-screen {
    background: #FAFAFA; /* Mantém fundo claro dentro da tela para leitura se for padrão do livro, mas controlaremos via epubjs */
}

.reader-loading, .reader-error {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: rgba(17, 17, 17, 0.95);
    color: #FFF;
    z-index: 10;
    text-align: center;
}

.reader-hint {
    font-size: 0.7rem;
    opacity: 0.7;
    margin-top: 0.5rem;
}

.spinner {
    width: 36px;
    height: 36px;
    border: 4px solid rgba(255, 255, 255, 0.15);
    border-left-color: var(--brand-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

.reader-viewer {
    width: 100%;
    height: 100%;
    padding: 1rem;
    background: #FAF9F6; /* Fundo suave estilo papel de leitura */
    min-width: 0;
    overflow: hidden;
}

.reader-viewer > div {
    max-width: 100% !important;
    min-width: 0 !important;
}

.reader-viewer iframe {
    border: none !important;
    width: 100% !important;
    height: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
}

.tablet-controls {
    height: 50px;
    background: #2e2e38;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.2rem;
    border-top: 1px solid rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .tablet-controls {
    background: #0d0e11;
}

.reader-btn {
    color: #FFFFFF;
    opacity: 0.75;
    transition: opacity 0.2s ease, transform 0.2s ease, background-color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

.reader-btn:hover {
    opacity: 1;
    transform: scale(1.1);
    background: var(--brand-blue);
    color: #FFFFFF;
}

.reader-meta {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.6);
    text-transform: uppercase;
    letter-spacing: 1px;
}