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

/* Sidebar Escura Padrão POLIS */
.sidebar { 
    width: var(--sidebar-width); 
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    padding: 20px 0; 
    position: fixed;
    height: 100vh;
    box-shadow: 2px 0 8px rgba(0,0,0,0.1);
    z-index: 100;
}
.sidebar-logo {
    font-size: 1.4rem; font-weight: 700; padding: 0 20px 20px;
    border-bottom: 1px solid var(--sidebar-hover);
    margin-bottom: 15px; color: #fff;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}
.nav-menu { list-style: none; }
.nav-btn { 
    width: 100%; text-align: left; padding: 15px 25px;
    background: none; border: none; font-size: 0.95rem; 
    color: #cbd5e1; cursor: pointer; 
    border-left: 4px solid transparent; 
    display: flex; justify-content: space-between; align-items: center;
    transition: all 0.3s ease; font-family: 'Poppins', sans-serif;
}
.nav-btn:hover { background: var(--sidebar-hover); color: #fff; }
.nav-btn.active { 
    background: var(--sidebar-hover); 
    border-left-color: var(--primary-color); 
    font-weight: 600; color: #fff; 
}

/* Container Principal e Header */
.main-wrapper { 
    flex: 1; margin-left: var(--sidebar-width); 
    display: flex; flex-direction: column;
}
.main-header {
    display: flex; justify-content: space-between; align-items: center;
    background: var(--card-bg); padding: 15px 30px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    position: sticky; top: 0; z-index: 90;
}

.container { padding: 30px 40px; flex: 1; }
.module-section { display: none; animation: fadeIn 0.4s ease; }
.module-section.active { display: block; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* Grid de Dashboards */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-bottom: 30px; }