/* ==========================================================================
   VARIAVEIS DE TEMA (DARK / LIGHT)
   ========================================================================== */
:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --accent-color: #38bdf8;
    --accent-hover: #0284c7;
    --border-color: #334155;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --header-bg: rgba(15, 23, 42, 0.9);
    --sponsor-badge: #eab308;
}

[data-theme="light"] {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #0f172a;
    --text-muted: #64748b;
    --accent-color: #0284c7;
    --accent-hover: #0369a1;
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 0, 0, 0.08);
    --header-bg: rgba(255, 255, 255, 0.9);
    --sponsor-badge: #ca8a04;
}

/* Base resets */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--header-bg);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
}

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

/* Estilo do Logo no Header */
/* ==========================================================================
   AJUSTES DO CARD DE AUTOR E LOGO
   ========================================================================== */

/* Estilo do Logo no Header */
.brand-logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.brand-logo-img {
    height: 144px;
    width: auto;
    object-fit: contain;
    transition: transform 0.2s ease;
}

.brand-logo-link:hover .brand-logo-img {
    transform: scale(1.03);
}

@media (max-width: 480px) {
    .brand-logo-img {
        height: 114px;
    }
}

/* 
   Deixa a cor BRANCA da imagem transparente 
   Isso funciona muito bem para imagens claras sobre fundos escuros.
*/
.img-transparent {
    mix-blend-mode: multiply;
}

/* Quando estiver no tema escuro, garantimos que a área onde a imagem
   está mesclada tenha um fundo sutil (opcional) para dar contraste se necessário */
[data-theme="dark"] .card-author .card-image-wrapper {
    background-color: #d1d5db; /* Dá um fundo claro por trás para destacar a imagem via multiply */
}

/* Transições suaves para a imagem do autor */
.card-author .card-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.theme-toggle-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.5rem 0.75rem;
    border-radius: 50px;
    cursor: pointer;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s, transform 0.2s;
}

.theme-toggle-btn:hover {
    background-color: var(--border-color);
    transform: scale(1.05);
}

[data-theme="dark"] .icon-moon,
[data-theme="light"] .icon-sun {
    display: none;
}

/* ==========================================================================
   CONTEÚDO E CARDS
   ========================================================================== */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
    flex: 1;
    width: 100%;
}

.hero-section {
    text-align: center;
    margin-bottom: 3rem;
}

.hero-section h1 {
    font-size: 2.2rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.hero-section p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Grid Responsiva de Cards */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px var(--shadow-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.card a {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 20px var(--shadow-color);
    border-color: var(--accent-color);
}

/* Mantém proporção 1672x941 (~16:9) */
.card-image-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1672 / 941;
    background-color: var(--border-color);
    overflow: hidden;
}

.card-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.card:hover .card-image-wrapper img {
    transform: scale(1.03);
}

.card-content {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.card-content h2 {
    font-size: 1.35rem;
    margin-bottom: 0.5rem;
}

.card-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.25rem;
    flex: 1;
}

.btn-link {
    font-weight: 600;
    color: var(--accent-color);
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: gap 0.2s ease;
}

.card:hover .btn-link {
    gap: 0.5rem;
    color: var(--accent-hover);
}

.badge-pub {
    align-self: flex-start;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    background-color: rgba(234, 179, 8, 0.15);
    color: var(--sponsor-badge);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

/* ==========================================================================
   RODAPÉ (FOOTER)
   ========================================================================== */
.footer.site-footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 2.5rem 1.5rem;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: auto;
}

.footer strong {
    color: var(--text-color);
    font-size: 1.1rem;
}

.footer-links, .footer-social {
    margin: 0.75rem 0;
}

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

.footer a:hover {
    text-decoration: underline;
    color: var(--accent-hover);
}

.mkt-container {
    margin: 1.5rem auto;
    max-width: 320px;
}

.mkt-container-wide {
    max-width: 480px;
}

.mkt-container img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: opacity 0.2s;
}

.mkt-container img:hover {
    opacity: 0.9;
}

.footer-copy {
    margin-top: 1.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}