:root {
    --bg-main: #0f111a;
    --bg-sidebar: #151822;
    --bg-card: #1c202d;
    --text-primary: #f8fafc;
    --text-muted: #94a3b8;
    --border: #2e364f;
    --accent: #3b82f6;
    --success: #10b981;
    --danger: #ef4444;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; background: var(--bg-main); color: var(--text-primary); }

.layout { display: flex; min-height: 100vh; overflow-x: hidden; }

/* Sidebar */
.sidebar { width: 260px; background: var(--bg-sidebar); border-right: 1px solid var(--border); padding: 24px; transition: transform 0.3s ease-in-out; flex-shrink: 0; z-index: 100; }
.logo { font-size: 1.5rem; font-weight: 700; margin-bottom: 40px; color: #fff; letter-spacing: 1px; }
.nav { display: flex; flex-direction: column; gap: 8px; }
.nav-item { padding: 12px 16px; text-decoration: none; color: var(--text-muted); border-radius: 8px; transition: 0.2s; font-weight: 500; }
.nav-item:hover, .nav-item.active { background: rgba(59, 130, 246, 0.1); color: var(--accent); }

/* Main Content */
.main-content { flex: 1; display: flex; flex-direction: column; }
.topbar { height: 70px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; padding: 0 32px; background: var(--bg-main); }
.menu-btn { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; }
.search-bar input { background: var(--bg-card); border: 1px solid var(--border); padding: 10px 16px; border-radius: 8px; color: #fff; outline: none; width: 300px; }
.user-profile { display: flex; align-items: center; gap: 12px; }
.avatar { width: 36px; height: 36px; background: var(--accent); border-radius: 50%; }

/* Dashboard Body */
.dashboard-body { padding: 32px; overflow-y: auto; }
.welcome { margin-bottom: 32px; }
.welcome h1 { font-size: 1.5rem; margin-bottom: 4px; }
.welcome p { color: var(--text-muted); }

/* KPIs & Cards */
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 24px; margin-bottom: 32px; }
.kpi-card, .chart-card { background: var(--bg-card); border: 1px solid var(--border); padding: 24px; border-radius: 12px; box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06); }
.kpi-card h3 { font-size: 0.95rem; color: var(--text-muted); font-weight: 500; margin-bottom: 12px; }
.kpi-card .value { font-size: 2rem; font-weight: 700; margin-bottom: 8px; }
.trend { font-size: 0.85rem; font-weight: 500; }
.trend.positive { color: var(--success); }
.trend.negative { color: var(--danger); }

.charts-section { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; margin-bottom: 32px; }
.chart-card.full-width { grid-column: 1 / -1; }
.chart-card h3 { font-size: 1.1rem; margin-bottom: 24px; font-weight: 600; border-bottom: 1px solid var(--border); padding-bottom: 16px; }

/* Sections e Animação de Entrada */
.section-content { display: none; }
.section-content.active { display: block; animation: fadeIn 0.4s ease-out; }

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

/* Chart Elements */
.chart-wrapper { position: relative; height: 300px; width: 100%; }

/* Tabela */
.table-section { margin-bottom: 32px; }
.table-responsive { overflow-x: auto; width: 100%; }
table { width: 100%; border-collapse: collapse; min-width: 600px; }
th, td { padding: 16px 12px; text-align: left; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
th { color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; font-size: 0.75rem; }
tr:hover td { background: rgba(255, 255, 255, 0.02); }

/* Status Badges */
.badge { padding: 6px 12px; border-radius: 20px; font-size: 0.75rem; font-weight: 600; display: inline-block; }
.badge.success { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.badge.warning { background: rgba(245, 158, 11, 0.15); color: #fcd34d; }
.badge.danger { background: rgba(239, 68, 68, 0.15); color: var(--danger); }

/* Seção de Configurações */
.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 24px; }
.settings-form .form-group { margin-bottom: 20px; }
.settings-form label { display: block; margin-bottom: 8px; font-size: 0.9rem; color: var(--text-muted); font-weight: 500; }
.settings-form input, .settings-form select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: 0.2s;
}
.settings-form input:focus, .settings-form select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2); }
.settings-form input:disabled { background: rgba(0,0,0,0.2); cursor: not-allowed; }
.btn-save {
    background: var(--accent);
    color: #fff;
    border: none;
    padding: 12px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: 0.2s;
}
.btn-save:hover { filter: brightness(1.15); }

/* Toggle Switch */
.switch-group { display: flex; justify-content: space-between; align-items: center; }
.switch { position: relative; display: inline-block; width: 50px; height: 28px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #374151; transition: .4s; }
.slider:before { position: absolute; content: ""; height: 20px; width: 20px; left: 4px; bottom: 4px; background-color: white; transition: .4s; }
input:checked + .slider { background-color: var(--accent); }
input:focus + .slider { box-shadow: 0 0 1px var(--accent); }
input:checked + .slider:before { transform: translateX(22px); }
.slider.round { border-radius: 34px; }
.slider.round:before { border-radius: 50%; }


/* Responsividade Customizada */
@media (max-width: 1024px) {
    .charts-section { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .sidebar { position: fixed; height: 100%; transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); box-shadow: 4px 0 15px rgba(0,0,0,0.5); }
    .menu-btn { display: block; }
    .topbar { padding: 0 16px; }
    .search-bar input { width: 200px; }
    .dashboard-body { padding: 16px; }
    .chart-wrapper { height: 250px; }
}