:root {
    --primary: #6366f1;       /* Indigo */
    --primary-hover: #4f46e5;
    --secondary: #10b981;     /* Emerald */
    --secondary-hover: #059669;
    --warning: #f59e0b;
    --danger: #ef4444;
    --dark: #0f172a;          /* Slate 900 */
    --sidebar: #0f172a;       /* Slate 900 */
    --bg: #f8fafc;            /* Slate 50 */
    --card: #ffffff;
    --text-main: #334155;     /* Slate 700 */
    --text-muted: #64748b;    /* Slate 500 */
    --border: #e2e8f0;        /* Slate 200 */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

body { font-family: 'Inter', sans-serif; background: var(--bg); margin: 0; color: var(--text-main); font-size: 13px; text-transform: uppercase; transition: all 0.3s ease; }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }

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

/* Sidebar */
.sidebar { width: 260px; background: var(--sidebar); color: #f8fafc; padding: 25px 20px; position: fixed; height: 100vh; z-index: 100; overflow-y: auto; box-sizing: border-box; box-shadow: var(--shadow-lg); transition: all 0.3s ease; }
.sidebar h2 { font-size: 18px; border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 20px; margin-top: 0; font-weight: 700; letter-spacing: 1px; color: #fff; display: flex; align-items: center; gap: 10px; }

.nav-btn { text-decoration: none; width: 100%; padding: 14px 16px; margin: 6px 0; border: none; background: transparent; color: #cbd5e1; text-align: left; cursor: pointer; font-weight: 500; border-radius: 8px; transition: all 0.25s ease; display: flex; align-items: center; gap: 12px; font-size: 13px; font-family: 'Inter', sans-serif; text-transform: uppercase; box-sizing: border-box; position: relative; overflow: hidden; }
.nav-btn:hover { background: rgba(255,255,255,0.05); color: #fff; transform: translateX(4px); }
.nav-btn.active { background: var(--primary) !important; color: white !important; font-weight: 600; box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4); }

/* Main Content */
.main-content { flex: 1; margin-left: 260px; padding: 40px; box-sizing: border-box; }

.card { background: var(--card); padding: 30px; border-radius: 16px; box-shadow: var(--shadow-sm); margin-bottom: 24px; animation: fadeIn 0.4s ease forwards; border: 1px solid var(--border); transition: box-shadow 0.3s ease; }
.card:hover { box-shadow: var(--shadow-md); }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
.card h2 { margin-top: 0; margin-bottom: 25px; color: var(--dark); font-size: 1.25rem; font-weight: 700; display: flex; align-items: center; gap: 10px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 20px; margin-bottom: 25px; }

.form-group { display: flex; flex-direction: column; gap: 6px; }
input, select, textarea { width: 100%; padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px; box-sizing: border-box; text-transform: uppercase; font-family: 'Inter', sans-serif; font-size: 13px; color: var(--text-main); background: #fff; transition: all 0.2s; box-shadow: var(--shadow-sm); }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15); }
label { display: block; font-size: 11px; font-weight: 600; color: var(--text-muted); letter-spacing: 0.5px; }

table { width: 100%; border-collapse: separate; border-spacing: 0; margin-top: 20px; background: white; border-radius: 8px; overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-sm); }
th, td { border-bottom: 1px solid var(--border); padding: 14px 16px; text-align: left; }
th { background: #f8fafc; color: var(--dark); font-weight: 600; font-size: 12px; letter-spacing: 0.5px; }
td { display: table-cell; vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tbody tr { transition: background 0.2s; }
tbody tr:hover { background: #f1f5f9; }

.btn { padding: 12px 24px; border: none; border-radius: 8px; cursor: pointer; font-weight: 600; color: white; font-family: 'Inter', sans-serif; transition: all 0.2s ease; display: inline-flex; align-items: center; justify-content: center; gap: 8px; letter-spacing: 0.5px; text-transform: uppercase; text-decoration: none;}
.btn-save { background: linear-gradient(135deg, var(--secondary), #059669); width: 100%; box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3); margin-top: 10px; border-radius: 8px; }
.btn-save:hover { background: linear-gradient(135deg, #059669, #047857); transform: translateY(-2px); box-shadow: 0 6px 15px rgba(16, 185, 129, 0.4); }
.btn-edit { background: linear-gradient(135deg, var(--warning), #d97706); padding: 8px 14px; font-size: 11px; color: #fff !important; border-radius: 6px; box-shadow: 0 4px 10px rgba(245, 158, 11, 0.3); transition: all 0.3s ease; font-weight: 600; border: none; cursor: pointer;}
.btn-edit:hover { background: linear-gradient(135deg, #d97706, #b45309); transform: translateY(-2px); box-shadow: 0 6px 15px rgba(245, 158, 11, 0.4); }
.btn-view { background: linear-gradient(135deg, var(--dark), #1e293b); padding: 8px 14px; font-size: 11px; color: white !important; border-radius: 6px; transition: all 0.3s ease; box-shadow: 0 4px 10px rgba(15, 23, 42, 0.3); border: none; cursor: pointer;}
.btn-view:hover { background: linear-gradient(135deg, #1e293b, #0f172a); transform: translateY(-2px); box-shadow: 0 6px 15px rgba(15, 23, 42, 0.4); }
.btn-danger { background: linear-gradient(135deg, var(--danger), #dc2626); padding: 8px 14px; font-size: 11px; color: white !important; border-radius: 6px; transition: all 0.3s ease; box-shadow: 0 4px 10px rgba(239, 68, 68, 0.3); border: none; cursor: pointer;}
.btn-danger:hover { background: linear-gradient(135deg, #dc2626, #991b1b); transform: translateY(-2px); box-shadow: 0 6px 15px rgba(239, 68, 68, 0.4); }

.special-section { background: #f8fafc; border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin-bottom: 20px; }
.total-display { font-size: 28px; font-weight: 800; color: var(--primary); text-align: right; padding: 20px 0; border-top: 2px dashed var(--border); margin-top: 20px; letter-spacing: -0.5px; }

.pointer { cursor: pointer; color: var(--danger); font-weight: bold; background: #fee2e2; padding: 8px 12px; border-radius: 6px; transition: all 0.2s; display: inline-block;}
.pointer:hover { background: #fca5a5; transform: scale(1.05); }

/* Alerts & Badges */
.alert { padding: 16px; margin-bottom: 20px; border: 1px solid transparent; border-radius: 8px; font-weight: 500;}
.alert-success { color: #065f46; background-color: #d1fae5; border-color: #a7f3d0; }
.alert-danger { color: #991b1b; background-color: #fee2e2; border-color: #fecaca; }

.badge { display: inline-block; padding: 4px 8px; font-size: 10px; font-weight: 700; border-radius: 12px; text-transform: uppercase; letter-spacing: 0.5px; text-align: center; white-space: nowrap; box-shadow: var(--shadow-sm); }
.bg-primary { background: linear-gradient(135deg, var(--primary), #4338ca); color: #fff; }
.bg-success { background: linear-gradient(135deg, var(--secondary), #047857); color: #fff; }
.bg-warning { background: linear-gradient(135deg, var(--warning), #b45309); color: #fff; }
.bg-danger { background: linear-gradient(135deg, var(--danger), #b91c1c); color: #fff; }
.bg-info { background: linear-gradient(135deg, #0ea5e9, #0369a1); color: #fff; }

.btn-success { background: linear-gradient(135deg, var(--secondary), #047857); padding: 8px 14px; font-size: 11px; color: white !important; border-radius: 6px; box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3); border: none; cursor: pointer; transition: all 0.3s ease; font-weight: 600;}
.btn-success:hover { background: linear-gradient(135deg, #047857, #064e3b); transform: translateY(-2px); box-shadow: 0 6px 15px rgba(16, 185, 129, 0.4); }

.btn-warning { background: linear-gradient(135deg, var(--warning), #d97706); padding: 8px 14px; font-size: 11px; color: white !important; border-radius: 6px; box-shadow: 0 4px 10px rgba(245, 158, 11, 0.3); border: none; cursor: pointer; transition: all 0.3s ease; font-weight: 600;}
.btn-warning:hover { background: linear-gradient(135deg, #d97706, #b45309); transform: translateY(-2px); box-shadow: 0 6px 15px rgba(245, 158, 11, 0.4); }

/* Customizing Select2 to match theme */
.select2-container--default .select2-selection--single { background-color: #fff; border: 1px solid var(--border); border-radius: 8px; height: 38px; display: flex; align-items: center; box-shadow: var(--shadow-sm); }
.select2-container--default .select2-selection--single .select2-selection__arrow { height: 36px; }
.select2-container--default.select2-container--open .select2-selection--single { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15); }
.select2-dropdown { border: 1px solid var(--border); border-radius: 8px; box-shadow: var(--shadow-md); font-size: 13px; font-family: 'Inter', sans-serif; text-transform: uppercase; }

/* Dashboard Cards */
.dash-card { background: linear-gradient(135deg, var(--card), var(--bg)); padding: 25px; border-radius: 16px; border: 1px solid var(--border); padding-left: 25px; position: relative; overflow: hidden; box-shadow: var(--shadow-sm);}
.dash-card::before { content: ''; position: absolute; left: 0; top: 0; height: 100%; width: 4px; background: var(--primary); border-radius: 4px 0 0 4px; }
.dash-card.green::before { background: var(--secondary); }
.dash-card.red::before { background: var(--danger); }
.dash-card.orange::before { background: var(--warning); }
.dash-card h3 { margin: 0 0 10px 0; font-size: 12px; color: var(--text-muted); text-transform: uppercase; font-weight: 600;}
.dash-card .val { font-size: 32px; font-weight: 800; color: var(--dark); margin: 0;}

@media print { 
    body { font-size: 12px; background: white; -webkit-print-color-adjust: exact; }
    .sidebar, .nav-btn, .btn, .no-print { display: none !important; } 
    .main-content { margin: 0 !important; padding: 0 !important; width: 100%; } 
    .card { box-shadow: none; border: none; padding: 0; margin: 0; } 
    table { box-shadow: none; border: 1px solid #000; }
    th { background: #e5e7eb; color: #000;}
    th, td { border-bottom: 1px solid #000; padding: 8px;}
}