:root {
    --bg-main: #090D16;
    --bg-card: #1E293B;
    --primary-blue: #2563EB;
    --success-green: #10B981;
    --warning-yellow: #F59E0B;
    --danger-red: #EF4444;
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --border-color: #334155;
    --sidebar-width: 250px;
    --sidebar-collapsed: 80px;
}

/* MODO DIA / LIGHT MODE */
body.light-mode {
    --bg-main: #F1F5F9;
    --bg-card: #FFFFFF;
    --text-main: #0F172A;
    --text-muted: #64748B;
    --border-color: #E2E8F0;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

/* Sidebar Styling */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-card);
    transition: width 0.3s ease;
    padding: 20px 0;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar.collapsed { width: var(--sidebar-collapsed); }

.sidebar-item {
    padding: 15px 20px;
    color: var(--text-muted);
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: background 0.2s;
}

.sidebar-item:hover { background-color: var(--border-color); color: var(--text-main); }
.sidebar-item i { font-size: 1.2rem; margin-right: 15px; }
.sidebar.collapsed .sidebar-text { display: none; }

/* Main Content */
.main-content { flex-grow: 1; padding: 30px; transition: margin-left 0.3s ease; }

/* Cards & Badges */
.card {
    background-color: var(--bg-card);
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.badge-warning { background-color: var(--warning-yellow); color: #fff; padding: 3px 8px; border-radius: 12px; font-size: 0.8rem;}
.badge-success { background-color: var(--success-green); color: #fff; padding: 3px 8px; border-radius: 12px; font-size: 0.8rem;}
.badge-danger { background-color: var(--danger-red); color: #fff; padding: 3px 8px; border-radius: 12px; font-size: 0.8rem;}

.btn-primary { background-color: var(--primary-blue); color: #fff; border: none; padding: 10px 20px; border-radius: 5px; cursor: pointer; }
.btn-primary:hover { background-color: #1d4ed8; }