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

.sidebar {
    width: 220px;
    flex-shrink: 0;
    overflow: hidden;
    background: var(--cor-sidebar);
    color: #fff;
    padding: 24px 16px;
    white-space: nowrap;
    transition: width 0.2s ease, padding 0.2s ease;
    display: flex;
    flex-direction: column;
}

.sidebar-titulo {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 24px;
    padding: 0 8px;
}

.sidebar nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sidebar nav a {
    color: #cbd5e1;
    text-decoration: none;
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 14px;
}

.sidebar nav a:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

.sidebar nav a.ativo {
    background: var(--cor-primaria);
    color: #fff;
    font-weight: 600;
}

.sidebar-rodape {
    margin-top: auto;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.sidebar-usuario {
    font-size: 12px;
    color: #94a3b8;
    padding: 0 8px 6px;
}

.sidebar-sair {
    display: block;
    color: #cbd5e1;
    text-decoration: none;
    padding: 8px;
    font-size: 13px;
    border-radius: 8px;
}

.sidebar-sair:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #fff;
}

/* Layout de telas públicas: login, cadastro e admin */
.pagina-publica {
    margin: 0;
}

.conteudo-publico {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    background: var(--cor-fundo);
}

/* Menu recolhido: a barra lateral encolhe até sumir */
html.sidebar-recolhida .sidebar {
    width: 0;
    padding-left: 0;
    padding-right: 0;
}

.area-principal {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.topbar {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    background: #fff;
    border-bottom: 1px solid var(--cor-borda);
    flex-shrink: 0;
}

.botao-menu {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    border-radius: 8px;
    color: var(--cor-texto);
    cursor: pointer;
}

.botao-menu:hover {
    background: var(--cor-fundo);
}

.conteudo {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

@media (max-width: 600px) {
    .app {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        max-height: 220px;
        transition: max-height 0.2s ease, padding 0.2s ease;
    }
    .sidebar nav {
        flex-direction: row;
        overflow-x: auto;
    }
    html.sidebar-recolhida .sidebar {
        width: 100%;
        max-height: 0;
        padding-top: 0;
        padding-bottom: 0;
    }
}