:root {
    --bg-dark: #0f0f0f;
    --bg-panel: #1a1a1a;
    --gold: #d4af37;
    --red: #8b0000;
    --text: #e0e0e0;
    --sidebar-w: 260px;
}

/* GERAL */
body {
    margin: 0; 
    font-family: 'Georgia', serif;
    background: var(--bg-dark); 
    color: var(--text); 
    overflow: hidden;
}

.app-container { 
    display: flex; 
    height: 100vh; 
}

/* BARRA LATERAL (SIDEBAR) */
.sidebar {
    width: var(--sidebar-w); 
    background: #000;
    border-right: 2px solid var(--red); 
    padding: 20px;
    transition: 0.4s ease; 
    z-index: 100; 
    display: flex; 
    flex-direction: column;
}

.sidebar.closed { 
    margin-left: calc(-1 * var(--sidebar-w) - 40px); 
}

.logo { 
    text-align: center; 
    margin: 40px 0; 
    color: var(--gold); 
}

.logo i { 
    font-size: 2.5rem; 
}

.nav-btn {
    background: none; 
    border: none; 
    color: #888; 
    width: 100%;
    text-align: left; 
    padding: 15px; 
    cursor: pointer; 
    border-radius: 5px;
    margin-bottom: 8px; 
    display: flex; 
    align-items: center; 
    gap: 10px; 
    font-size: 1.1rem;
    transition: 0.3s;
}

.nav-btn.active, .nav-btn:hover { 
    background: var(--red); 
    color: #fff; 
}

/* BOTÃO DE MENU (MOBILE) */
.menu-toggle {
    position: fixed; 
    top: 15px; 
    left: 15px; 
    z-index: 200;
    background: var(--red); 
    border: 1px solid var(--gold);
    color: #fff; 
    padding: 10px; 
    cursor: pointer; 
    border-radius: 4px;
}

/* CONTEÚDO PRINCIPAL */
main { 
    flex: 1; 
    padding: 60px 40px; 
    overflow-y: auto; 
    background: radial-gradient(#222, #000); 
}

.content-section { 
    display: none; 
    max-width: 900px; 
    margin: 0 auto; 
    animation: fadeIn 0.5s; 
}

.content-section.active { 
    display: block; 
}

@keyframes fadeIn { 
    from { opacity: 0; } 
    to { opacity: 1; } 
}

h1 { 
    color: var(--gold); 
    text-align: center; 
    border-bottom: 1px solid var(--red); 
    padding-bottom: 15px; 
}

/* CAIXA DE ALERTA (VERSÃO 2.5) */
.version-alert {
    background: rgba(139, 0, 0, 0.2);
    border: 1px solid var(--red);
    padding: 15px;
    text-align: center;
    border-radius: 8px;
    margin-bottom: 30px;
    box-shadow: 0 0 10px rgba(139, 0, 0, 0.5);
}

.version-alert strong {
    color: #fff;
}

.version-alert a {
    color: var(--gold);
    text-decoration: underline;
    margin-left: 10px;
    font-weight: bold;
    transition: 0.3s;
}

.version-alert a:hover {
    color: #fff;
    text-shadow: 0 0 5px var(--gold);
}

/* CARDS E GRIDS */
.tutorial-grid { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 20px; 
    margin-top: 30px; 
}

.card-info { 
    background: var(--bg-panel); 
    padding: 20px; 
    border-radius: 8px; 
    border: 1px solid #333; 
}

.card-info h3 { 
    color: var(--gold); 
    margin-top: 0; 
}

.prayer-container { 
    background: var(--bg-panel); 
    padding: 25px; 
    margin-bottom: 25px; 
    border-left: 4px solid var(--gold); 
    border-radius: 0 8px 8px 0;
}

.latin { 
    font-style: italic; 
    font-size: 1.2rem; 
    color: #ccc; 
    line-height: 1.6; 
}

/* BOTÕES DE ÁUDIO */
.btn-play { 
    background: var(--gold); 
    border: none; 
    padding: 10px 20px; 
    font-weight: bold; 
    cursor: pointer; 
    border-radius: 4px; 
    transition: 0.3s;
}

.btn-play:hover { 
    background: #fff; 
    transform: scale(1.05);
}

.quick-vocab { 
    display: flex; 
    flex-wrap: wrap; 
    gap: 10px; 
}

.btn-sm-vocab { 
    background: #333; 
    color: var(--gold); 
    border: 1px solid var(--gold); 
    padding: 8px; 
    cursor: pointer; 
    border-radius: 4px; 
    transition: 0.2s;
}

.btn-sm-vocab:hover {
    background: var(--gold);
    color: #000;
}

/* DICIONÁRIO E BUSCA */
.dict-item { 
    display: flex; 
    justify-content: space-between; 
    padding: 15px; 
    border-bottom: 1px solid #333; 
    align-items: center; 
}

.search-box input { 
    width: 100%; 
    padding: 12px; 
    background: #000; 
    border: 1px solid var(--gold); 
    color: #fff; 
    border-radius: 4px; 
    outline: none;
}

.search-box input:focus {
    box-shadow: 0 0 5px var(--gold);
}

/* RODAPÉ SIDEBAR */
.status-audio { 
    margin-top: auto; 
    font-size: 0.8rem; 
    color: #555; 
    text-align: center; 
    padding: 10px;
}

/* RESPONSIVIDADE */
@media (max-width: 768px) {
    .tutorial-grid { 
        grid-template-columns: 1fr; 
    }
    main {
        padding: 60px 20px;
    }
}