/* ==========================================================================
   FOCOFIXO PRODUÇÕES — LIVROS & PUBLICAÇÕES
   Design System: Luxury Dark Mode & Bronze Fotográfico
   ========================================================================== */

:root {
    /* Tipografia */
    --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Paleta Luxury Dark (FocoFixo Original) */
    --color-bg-deep: #060606;
    --color-bg-surface: #0b0b0b;
    --color-bg-card: #121212;
    --color-bg-card-hover: #181818;
    --color-bg-nav: rgba(6, 6, 6, 0.88);

    /* Bordas e Divisores */
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-hover: rgba(212, 163, 115, 0.35);
    --color-border-focus: rgba(212, 163, 115, 0.6);

    /* Tipografia e Cores de Texto */
    --color-text-main: #f5f5f7;
    --color-text-muted: #8e8e93;
    --color-text-dim: #636366;
    --color-text-white: #ffffff;

    /* Acento Bronze Fotográfico */
    --color-accent: #d4a373;
    --color-accent-rgb: 212, 163, 115;
    --color-accent-hover: #faedcd;
    --color-accent-dark: #b88a5b;
    --color-accent-glow: rgba(212, 163, 115, 0.15);

    /* Sombras & Profundidade */
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.6);
    --shadow-premium: 0 24px 50px rgba(0, 0, 0, 0.85);
    --shadow-book: 0 20px 45px rgba(0, 0, 0, 0.75), 0 0 35px rgba(212, 163, 115, 0.08);
    --shadow-glow: 0 0 30px rgba(212, 163, 115, 0.25);

    /* Transições */
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.25s ease;

    /* Bordas arredondadas */
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-round: 50px;

    /* Layout */
    --container-width: 1240px;
}

/* -------------------------------------------------------------
   RESET & ESTILOS BASE
   ------------------------------------------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--color-bg-deep);
    color: var(--color-text-main);
    font-family: var(--font-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
    line-height: 1.65;
    background-color: var(--color-bg-deep);
    background-image: 
        radial-gradient(circle at 15% 10%, rgba(212, 163, 115, 0.04) 0%, transparent 45%),
        radial-gradient(circle at 85% 65%, rgba(212, 163, 115, 0.03) 0%, transparent 50%);
    background-attachment: fixed;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

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

/* -------------------------------------------------------------
   TIPOGRAFIA
   ------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 500;
    letter-spacing: -0.02em;
    line-height: 1.25;
    color: var(--color-text-white);
}

p {
    color: var(--color-text-muted);
}

/* -------------------------------------------------------------
   CONTAINER & LAYOUT
   ------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section-padding {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
}

.section-subtitle {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-accent);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.section-subtitle::before,
.section-subtitle::after {
    content: '';
    display: inline-block;
    width: 24px;
    height: 1px;
    background-color: var(--color-accent);
    opacity: 0.7;
}

.section-title {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-weight: 400;
    color: var(--color-text-white);
    margin-bottom: 16px;
}

.section-description {
    max-width: 680px;
    margin: 0 auto;
    font-size: 1.05rem;
    color: var(--color-text-muted);
}

.section-divider {
    width: 50px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    margin: 24px auto 0;
}

/* -------------------------------------------------------------
   BOTÕES & AÇÕES
   ------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: var(--radius-round);
    cursor: pointer;
    transition: var(--transition-smooth);
    text-align: center;
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #0c0a08;
    box-shadow: 0 10px 25px rgba(var(--color-accent-rgb), 0.25);
    font-weight: 600;
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-3px);
    box-shadow: 0 16px 30px rgba(var(--color-accent-rgb), 0.4);
    color: #060606;
}

.btn-outline {
    border: 1px solid var(--color-border);
    color: var(--color-text-white);
    background-color: rgba(255, 255, 255, 0.02);
    backdrop-filter: blur(8px);
}

.btn-outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background-color: rgba(var(--color-accent-rgb), 0.08);
    transform: translateY(-3px);
}

.btn-sm {
    padding: 9px 18px;
    font-size: 0.85rem;
}

/* -------------------------------------------------------------
   HEADER & NAVEGAÇÃO (FOCOFIXO PADRÃO)
   ------------------------------------------------------------- */
#site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: var(--color-bg-nav);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition-smooth);
}

.nav-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 24px;
    height: 88px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 42px;
    width: auto;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 34px;
    list-style: none;
}

.nav-link {
    font-size: 0.88rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    position: relative;
    padding: 8px 0;
    transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-accent);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Mobile Toggle Hamburger */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 26px;
    height: 20px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger, .hamburger::before, .hamburger::after {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-white);
    display: block;
    transition: var(--transition-smooth);
}

.hamburger {
    position: relative;
    top: 9px;
}

.hamburger::before {
    content: '';
    position: absolute;
    top: -9px;
}

.hamburger::after {
    content: '';
    position: absolute;
    bottom: -9px;
}

.menu-toggle.open .hamburger {
    background-color: transparent;
}

.menu-toggle.open .hamburger::before {
    transform: translateY(9px) rotate(45deg);
    background-color: var(--color-accent);
}

.menu-toggle.open .hamburger::after {
    transform: translateY(-9px) rotate(-45deg);
    background-color: var(--color-accent);
}

/* -------------------------------------------------------------
   DESTAQUE CARRO-CHEFE (NO TOPO)
   ------------------------------------------------------------- */
.spotlight-header {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.flagship-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: #0c0a08;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
    padding: 8px 24px;
    border-radius: var(--radius-round);
    margin-bottom: 20px;
    box-shadow: 0 4px 20px rgba(var(--color-accent-rgb), 0.35);
}

.flagship-badge svg {
    width: 15px;
    height: 15px;
}

.spotlight-title {
    font-size: clamp(2.4rem, 4.5vw, 3.8rem);
    font-weight: 500;
    color: var(--color-text-white);
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.spotlight-tagline {
    font-size: 1.15rem;
    color: var(--color-text-muted);
    max-width: 680px;
    margin: 0 auto;
    font-weight: 300;
    line-height: 1.65;
}

.spotlight-tagline strong {
    color: var(--color-accent);
}

/* -------------------------------------------------------------
   VITRINE DE LIVROS
   ------------------------------------------------------------- */
.books-section {
    position: relative;
    padding: 140px 0 90px;
}

/* Destaque no Card Carro-Chefe */
.book-card.flagship-card {
    border: 1px solid rgba(212, 163, 115, 0.4);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.9), 0 0 35px rgba(212, 163, 115, 0.15);
    background: linear-gradient(145deg, rgba(22, 22, 22, 0.98), rgba(12, 12, 12, 0.98));
}

.book-card.flagship-card:hover {
    border-color: rgba(212, 163, 115, 0.7);
    box-shadow: 0 30px 75px rgba(0, 0, 0, 0.95), 0 0 50px rgba(212, 163, 115, 0.25);
}

/* Divisor Visual de Acervo */
.archive-divider-box {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin: 20px 0;
}

.archive-divider-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.12), transparent);
}

.archive-divider-label {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-accent);
    white-space: nowrap;
}

/* -------------------------------------------------------------
   PRODUÇÃO EDITORIAL & TRAJETÓRIA (SESSÃO INFORMATIVA ABAIXO)
   ------------------------------------------------------------- */
.editorial-trajectory-section {
    position: relative;
    padding: 90px 0;
    background: var(--color-bg-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
}

.editorial-trajectory-content {
    max-width: 860px;
    margin: 0 auto;
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--color-accent);
    background-color: rgba(var(--color-accent-rgb), 0.1);
    border: 1px solid rgba(var(--color-accent-rgb), 0.25);
    padding: 7px 20px;
    border-radius: var(--radius-round);
    margin-bottom: 26px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

.hero-badge svg {
    width: 14px;
    height: 14px;
}

.editorial-section-title {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-text-white);
    margin-bottom: 20px;
}

.editorial-section-title span {
    color: var(--color-accent);
    font-style: italic;
    font-family: serif;
}

.editorial-description {
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    color: var(--color-text-muted);
    font-weight: 300;
    margin-bottom: 40px;
    line-height: 1.7;
}

/* Stats Bar */
.hero-stats-bar {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    max-width: 780px;
    margin: 0 auto;
    padding: 24px;
    background-color: rgba(18, 18, 18, 0.6);
    backdrop-filter: blur(12px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.stat-item {
    text-align: center;
    border-right: 1px solid var(--color-border);
}

.stat-item:last-child {
    border-right: none;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1.1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
}

.books-container {
    display: flex;
    flex-direction: column;
    gap: 80px;
}

/* Card Individual de Livro */
.book-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 48px;
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 52px;
    position: relative;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.book-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 10% 20%, rgba(212, 163, 115, 0.05) 0%, transparent 60%);
    pointer-events: none;
}

.book-card:hover {
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-premium), var(--shadow-glow);
    transform: translateY(-4px);
}

/* Coluna da Capa (3D Book Representation) */
.book-cover-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    position: relative;
}

.book-cover-stage {
    position: relative;
    perspective: 1200px;
    width: 100%;
    max-width: 320px;
    margin-bottom: 28px;
}

.book-mockup-wrapper {
    position: relative;
    border-radius: 8px 16px 16px 8px;
    overflow: hidden;
    box-shadow: var(--shadow-book);
    transform: rotateY(-8deg) rotateX(4deg);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.6s ease;
    border-left: 5px solid rgba(255, 255, 255, 0.15);
    background-color: #1a1a1a;
    aspect-ratio: 2 / 3;
}

.book-mockup-wrapper:hover {
    transform: rotateY(0deg) rotateX(0deg) scale(1.02);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.9), 0 0 45px rgba(var(--color-accent-rgb), 0.2);
}

.book-cover-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* Efeito de brilho de página/lombada */
.book-spine-glow {
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 25px;
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0.25) 0%, 
        rgba(255, 255, 255, 0.05) 50%, 
        transparent 100%);
    pointer-events: none;
}

/* Ribbon / Selo de Ano */
.year-badge-pill {
    position: absolute;
    top: 18px;
    right: 18px;
    background-color: var(--color-accent);
    color: #0c0a08;
    font-size: 0.82rem;
    font-weight: 700;
    padding: 6px 16px;
    border-radius: var(--radius-round);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.6);
    letter-spacing: 0.05em;
    z-index: 5;
}

/* Coluna de Conteúdo do Livro */
.book-details-col {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.book-header {
    margin-bottom: 24px;
}

.book-meta-top {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.book-tag {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-accent);
    background-color: rgba(var(--color-accent-rgb), 0.1);
    border: 1px solid rgba(var(--color-accent-rgb), 0.2);
    padding: 4px 12px;
    border-radius: var(--radius-round);
}

.book-year-meta {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.book-year-meta::before {
    content: '•';
    color: var(--color-accent);
}

.book-title {
    font-size: clamp(2rem, 3.2vw, 2.8rem);
    font-weight: 500;
    color: var(--color-text-white);
    margin-bottom: 6px;
    letter-spacing: -0.02em;
}

.book-subtitle {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 400;
    color: var(--color-accent);
    margin-bottom: 18px;
    font-style: italic;
}

/* Citação / Frase Marcante */
.book-quote-box {
    margin-bottom: 24px;
    padding: 16px 22px;
    background-color: rgba(255, 255, 255, 0.02);
    border-left: 3px solid var(--color-accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.book-quote-text {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-style: italic;
    color: #e5e5e7;
    line-height: 1.5;
}

/* Abas de Navegação Interna do Livro */
.book-tabs-nav {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 12px;
}

.book-tab-btn {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    padding: 6px 14px;
    border-radius: var(--radius-round);
    transition: var(--transition-fast);
}

.book-tab-btn:hover {
    color: var(--color-text-white);
}

.book-tab-btn.active {
    background-color: rgba(var(--color-accent-rgb), 0.15);
    color: var(--color-accent);
}

/* Painéis de Conteúdo das Abas */
.tab-pane {
    display: none;
    animation: fadeIn 0.3s ease forwards;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.book-synopsis-text {
    font-size: 0.98rem;
    line-height: 1.75;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}

.book-synopsis-text strong {
    color: var(--color-text-white);
}

/* Lista de Especificações Técnicas */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px 24px;
    margin-bottom: 16px;
}

.spec-entry {
    background-color: rgba(255, 255, 255, 0.02);
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

.spec-key {
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-accent);
    margin-bottom: 4px;
}

.spec-value {
    font-size: 0.92rem;
    color: var(--color-text-white);
    font-weight: 500;
}

/* Botões de Ação do Livro */
.book-cta-box {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 18px;
}

.book-cta-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.platform-notice {
    font-size: 0.82rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.platform-notice svg {
    color: var(--color-accent);
    width: 16px;
    height: 16px;
}

/* -------------------------------------------------------------
   SEÇÃO DO AUTOR (ALE SILVA)
   ------------------------------------------------------------- */
.author-spotlight-section {
    background-color: var(--color-bg-surface);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    position: relative;
}

.author-card {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 56px;
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 48px;
    align-items: center;
    box-shadow: var(--shadow-md);
}

.author-visual {
    text-align: center;
}

.author-avatar-frame {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    margin: 0 auto 24px;
    padding: 6px;
    background: linear-gradient(135deg, var(--color-accent), transparent 60%);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.6);
}

.author-avatar-inner {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #1a1a1a;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.author-avatar-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    z-index: 2;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.author-avatar-frame:hover .author-avatar-img {
    transform: scale(1.05);
}

.author-initials {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 600;
    color: var(--color-accent);
    letter-spacing: -0.05em;
    z-index: 1;
}

.author-role-badge {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-accent);
    margin-bottom: 8px;
}

.author-name {
    font-size: 2rem;
    color: var(--color-text-white);
    margin-bottom: 6px;
}

.author-creds {
    font-size: 0.88rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.author-bio {
    font-size: 1.02rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 28px;
}

.author-quote {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-style: italic;
    color: var(--color-accent-hover);
    margin-bottom: 32px;
    padding-left: 20px;
    border-left: 2px solid var(--color-accent);
}

.author-links-group {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* -------------------------------------------------------------
   RODAPÉ (FOCOFIXO PADRÃO)
   ------------------------------------------------------------- */
#site-footer {
    background-color: #040404;
    border-top: 1px solid var(--color-border);
    padding: 70px 0 35px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 50px;
}

.footer-brand .footer-logo {
    height: 38px;
    margin-bottom: 18px;
}

.footer-desc {
    font-size: 0.92rem;
    color: var(--color-text-muted);
    max-width: 380px;
    line-height: 1.65;
}

.footer-col-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-white);
    margin-bottom: 20px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.footer-links-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-link {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    transition: var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-accent);
    padding-left: 4px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--color-text-dim);
}

.footer-bottom a {
    color: var(--color-accent);
}

/* -------------------------------------------------------------
   RESPONSIVIDADE (MOBILE & TABLETS)
   ------------------------------------------------------------- */
@media (max-width: 1024px) {
    .book-card {
        grid-template-columns: 300px 1fr;
        gap: 36px;
        padding: 36px;
    }

    .author-card {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 40px;
    }

    .author-quote {
        border-left: none;
        border-top: 1px solid var(--color-border);
        border-bottom: 1px solid var(--color-border);
        padding: 16px 0;
    }

    .author-links-group {
        justify-content: center;
    }

    .footer-top {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 820px) {
    .nav-menu {
        position: fixed;
        top: 88px;
        left: 0;
        width: 100%;
        background-color: rgba(6, 6, 6, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 32px 24px;
        gap: 24px;
        border-bottom: 1px solid var(--color-border);
        transform: translateY(-150%);
        transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 999;
    }

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

    .menu-toggle {
        display: flex;
    }

    .book-card {
        grid-template-columns: 1fr;
        padding: 28px;
        gap: 32px;
    }

    .book-cover-stage {
        max-width: 260px;
        margin: 0 auto;
    }

    .book-mockup-wrapper {
        transform: none;
    }

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

    .hero-stats-bar {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .stat-item {
        border-right: none;
        border-bottom: 1px solid var(--color-border);
        padding-bottom: 12px;
    }

    .stat-item:last-child {
        border-bottom: none;
        padding-bottom: 0;
    }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 36px;
    }
}

@media (max-width: 520px) {
    .book-cta-box {
        flex-direction: column;
        align-items: stretch;
    }

    .book-cta-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn-block-mobile {
        width: 100%;
    }

    .controls-inner {
        flex-direction: column;
        align-items: stretch;
    }

    .sort-btn-group {
        width: 100%;
        justify-content: center;
    }
}