:root {
    --gold: #c5a059;
    --dark-bg: #111827;
    --panel-bg: #1f2937;
    --text-light: #f3f4f6;
    --border: #374151;
    --service-badge: #8b5cf6;
    --product-badge: #10b981;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, sans-serif; }
body { background-color: var(--dark-bg); color: var(--text-light); display: flex; height: 100vh; overflow: hidden; }
.app-container { display: flex; width: 100%; }
.sidebar { width: 250px; background: #000; border-right: 1px solid var(--gold); padding: 30px 20px; display: flex; flex-direction: column; }
.brand { text-align: center; margin-bottom: 40px; color: var(--gold); }
.brand h2 { font-size: 1.5rem; letter-spacing: 1px; }
.brand small { font-style: italic; opacity: 0.8; }
.nav-menu { display: flex; flex-direction: column; gap: 10px; }
.nav-btn { background: transparent; border: 1px solid transparent; color: var(--text-light); padding: 12px; border-radius: 6px; cursor: pointer; text-align: left; font-size: 1rem; transition: 0.3s; }
.nav-btn:hover, .nav-btn.active { border-color: var(--gold); background: rgba(197, 160, 89, 0.1); color: var(--gold); }
.main-content { flex: 1; display: flex; flex-direction: column; }
.topbar { background: var(--panel-bg); padding: 20px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.exchange-rate { display: flex; align-items: center; gap: 10px; background: #000; padding: 10px 15px; border-radius: 6px; border: 1px solid var(--gold); }
.exchange-rate input { background: transparent; border: none; color: var(--gold); font-size: 1.2rem; font-weight: bold; width: 80px; outline: none; text-align: right;}
.content-body { padding: 25px; overflow-y: auto; flex: 1; }
.tab-pane { display: none; }
.tab-pane.active { display: block; }
h2 { color: var(--gold); margin-bottom: 20px; }
h3 { color: var(--text-light); margin-bottom: 15px; }
label { display: block; margin-bottom: 5px; color: #9ca3af; font-size: 0.9rem; }
.data-table { width: 100%; border-collapse: collapse; background: var(--panel-bg); border-radius: 8px; overflow: hidden; }
.data-table th, .data-table td { padding: 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 0.95rem; }
.data-table th { color: var(--gold); font-weight: 600; background: #111827; }
.badge { padding: 4px 8px; border-radius: 4px; font-size: 0.8rem; font-weight: bold; text-transform: uppercase; }
.badge.servicio { background: rgba(139, 92, 246, 0.2); color: var(--service-badge); border: 1px solid var(--service-badge); }
.badge.producto { background: rgba(16, 185, 129, 0.2); color: var(--product-badge); border: 1px solid var(--product-badge); }
.status-pendiente { color: #f59e0b; font-weight: bold; }
.status-completada { color: #10b981; font-weight: bold; }
.status-cancelada { color: #ef4444; font-weight: bold; }
.pos-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; height: calc(100vh - 160px); }
.pos-products, .pos-cart { background: var(--panel-bg); padding: 20px; border-radius: 8px; border: 1px solid var(--border); overflow-y: auto; }
.filters { margin-bottom: 15px; display: flex; gap: 10px; }
.filter-btn { background: var(--dark-bg); color: var(--text-light); border: 1px solid var(--border); padding: 8px 15px; border-radius: 4px; cursor: pointer; }
.filter-btn:hover { border-color: var(--gold); }
.product-cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.prod-card { background: var(--dark-bg); border: 1px solid var(--border); padding: 15px; border-radius: 6px; cursor: pointer; transition: 0.2s; position: relative; }
.prod-card:hover { border-color: var(--gold); transform: translateY(-2px); }
.prod-card .type-indicator { position: absolute; top: 10px; right: 10px; font-size: 0.7rem; }
.form-control { width: 100%; padding: 10px; background: var(--dark-bg); border: 1px solid var(--border); color: var(--text-light); border-radius: 4px; margin-bottom: 15px; }
#cart-items-list { list-style: none; margin: 15px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 10px 0; max-height: 300px; overflow-y: auto; }
.cart-item { display: flex; justify-content: space-between; margin-bottom: 10px; font-size: 0.9rem; border-bottom: 1px dashed var(--border); padding-bottom: 5px; }
.cart-item-prices { text-align: right; color: var(--gold); }
.cart-totals div { display: flex; justify-content: space-between; margin-top: 10px; }
.total-row { color: var(--gold); margin-top: 15px; font-size: 1.3rem; text-align: right; border-top: 2px solid var(--border); padding-top: 10px;}
.btn-success { background: var(--gold); color: #000; border: none; padding: 15px; width: 100%; border-radius: 6px; font-weight: bold; font-size: 1rem; cursor: pointer; margin-top: 10px; transition: 0.2s; }
.btn-success:hover { background: #d4b270; }
.btn-small { padding: 5px 10px; font-size: 0.8rem; border-radius: 4px; cursor: pointer; border: none; color: #fff; background: var(--dark-bg); }
.btn-small:hover { background: var(--gold); color: #000; }