:root{--red:#ed1118;--red-dark:#bd0d12;--dark:#18202a;--sidebar:#202731;--bg:#f4f6f9;--green:#16a34a}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:#222}
.app-shell{min-height:100vh;display:flex}
.sidebar{position:fixed;left:0;top:0;bottom:0;width:250px;background:linear-gradient(180deg,#1d252f,#141a21);color:#fff;z-index:1000;display:flex;flex-direction:column;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#4a5568 transparent}
.sidebar::-webkit-scrollbar{width:6px}.sidebar::-webkit-scrollbar-thumb{background:#4a5568;border-radius:3px}.sidebar::-webkit-scrollbar-track{background:transparent}
.brand-box{text-align:center;padding:20px 12px 16px;border-bottom:1px solid rgba(255,255,255,.12)}
.brand-logo{width:142px;height:142px;border-radius:50%;object-fit:cover;border:5px solid #fff;box-shadow:0 4px 16px #0005}
.brand-name{font-size:21px;font-weight:800;margin-top:8px}
.brand-subtitle{font-size:12px;color:#d7dce2}
.side-nav{display:flex;flex-direction:column;padding:12px 0;flex:1}
.side-nav a{color:#dbe0e6;text-decoration:none;padding:12px 18px;font-size:14px;display:flex;align-items:center;gap:12px;border-left:4px solid transparent}
.side-nav a:hover,.side-nav a.active{background:var(--red);color:#fff;border-left-color:#fff}
.side-nav .nav-label{font-size:11px;color:#9aa4af;letter-spacing:.8px;padding:14px 16px 6px}
.main-content{margin-left:250px;min-height:100vh;width:calc(100% - 250px)}
.topbar{height:70px;background:linear-gradient(90deg,#e80c12,#f20d13);color:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 24px;box-shadow:0 2px 10px #0002}
.top-logo{height:45px;width:45px;border-radius:50%;object-fit:cover;border:2px solid #fff}.topbar strong{font-size:23px}.top-system{font-size:14px;font-weight:500}
.user-chip{display:flex;align-items:center;gap:8px;font-weight:600;color:#fff!important;text-decoration:none}.user-chip:hover{color:#fff!important;opacity:.9}.user-chip small{font-weight:400;opacity:.85}
.avatar{display:inline-flex;width:34px;height:34px;border-radius:50%;background:#fff;color:#333;align-items:center;justify-content:center}
.content-wrap{padding:26px 22px;min-height:calc(100vh - 120px)}
.page-title{font-size:28px;font-weight:800}.breadcrumb{justify-content:flex-end}
.card-modern{border:0;border-radius:8px;box-shadow:0 3px 14px #18202a12;background:#fff}
.stat-card{padding:18px;display:flex;align-items:center;justify-content:space-between;min-height:118px}.stat-icon{width:58px;height:58px;border-radius:10px;display:flex;align-items:center;justify-content:center;background:#fff1f1;color:var(--red);font-size:27px}
.stat-number{font-size:28px;font-weight:800}.stat-label{font-size:13px;color:#6b7280}
.table-modern{overflow:hidden;border-radius:8px}.table-modern thead th{background:var(--red);color:#fff;border:0;padding:13px 12px;font-size:13px}.table-modern tbody td{vertical-align:middle;padding:12px;border-color:#e9ecef}
.product-thumb{width:82px;height:62px;object-fit:cover;border-radius:8px;background:#f1f1f1}
.badge-soft{padding:7px 10px;border-radius:7px;font-weight:600;font-size:12px}.badge-available{background:#dcfce7;color:#15803d}.badge-low{background:#fef3c7;color:#a16207}.badge-out{background:#fee2e2;color:#b91c1c}
.btn-danger{background:var(--red);border-color:var(--red)}.btn-danger:hover{background:var(--red-dark);border-color:var(--red-dark)}
.footer{text-align:center;background:#fff;border-top:1px solid #e5e7eb;padding:18px;color:#6b7280;font-size:13px}
.search-box{max-width:270px}.section-card{padding:20px}.toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.form-control,.form-select{border-radius:7px}.price-input{min-width:105px}.stock-input{min-width:85px}
.login-page{min-height:100vh;background:radial-gradient(circle at top,#ff5555,#b90005 50%,#1a1f26 100%);display:flex;align-items:center;justify-content:center;padding:20px}
.login-card{background:#fff;width:430px;max-width:100%;padding:35px;border-radius:18px;text-align:center;box-shadow:0 25px 70px #0007;position:relative}.login-logo{width:150px;height:150px;border-radius:50%;object-fit:cover;border:5px solid #fff;box-shadow:0 5px 18px #0003}.login-card h1{font-weight:900;color:var(--red);margin:15px 0 2px}.demo-box{background:#f8f9fa;padding:12px;border-radius:8px;font-size:12px;line-height:1.6}
.pos-product{cursor:pointer;transition:.15s;height:100%;border:1px solid #e5e7eb}.pos-product:hover{transform:translateY(-2px);box-shadow:0 6px 20px #0001;border-color:#ff9a9d}.pos-product img{height:125px;object-fit:cover}.pos-price{font-weight:800;color:var(--red)}
.cart-panel{position:sticky;top:15px}.cart-row{border-bottom:1px solid #eee;padding:11px 0}.cart-row:last-child{border-bottom:0}
.cart-img{width:50px;height:45px;object-fit:cover;border-radius:6px}.total-box{background:#fff5f5;border-radius:8px;padding:16px}
.upload-preview{width:120px;height:90px;object-fit:cover;border-radius:8px;border:1px solid #ddd}
@media(max-width:992px){.sidebar{transform:translateX(-100%);transition:.2s}.sidebar.show{transform:translateX(0)}.main-content{margin-left:0;width:100%}.top-system{display:none}.content-wrap{padding:18px 12px}}
.dashboard-stat-link{display:block;color:inherit;text-decoration:none;height:100%}
.dashboard-stat-link:hover{color:inherit;text-decoration:none}
.dashboard-stat-link .stat-card{transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease;border:1px solid transparent}
.dashboard-stat-link:hover .stat-card{transform:translateY(-3px);box-shadow:0 8px 24px rgba(24,32,42,.14);border-color:#ffd1d3}
.sales-stat-card{min-height:136px}
.stat-link-text{font-size:12px;color:var(--red);font-weight:700;margin-top:5px}
.stat-link-text i{margin-left:3px}

/* Notification dropdown */
#notifList .dropdown-item{white-space:normal}
.white-space-normal{white-space:normal}

/* Chatbot widget */
#chatbotWidget{position:fixed;bottom:22px;right:22px;z-index:1050;font-family:inherit}
.chatbot-toggle-btn{width:56px;height:56px;border-radius:50%;background:var(--red);color:#fff;border:none;font-size:22px;box-shadow:0 8px 24px #0003;cursor:pointer;display:flex;align-items:center;justify-content:center}
.chatbot-toggle-btn:hover{background:var(--red-dark)}
.chatbot-panel{position:absolute;bottom:70px;right:0;width:320px;max-width:88vw;height:420px;max-height:70vh;background:#fff;border-radius:14px;box-shadow:0 20px 60px #0004;display:flex;flex-direction:column;overflow:hidden;opacity:0;pointer-events:none;transform:translateY(12px);transition:.18s}
.chatbot-panel.open{opacity:1;pointer-events:auto;transform:translateY(0)}
.chatbot-header{background:var(--red);color:#fff;padding:12px 14px;font-weight:700;display:flex;align-items:center;gap:8px}
.chatbot-header button{margin-left:auto;background:none;border:none;color:#fff;font-size:20px;line-height:1;cursor:pointer}
.chatbot-messages{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:8px;background:#f8f9fa}
.chatbot-msg{max-width:82%;padding:9px 12px;border-radius:12px;font-size:13.5px;line-height:1.4}
.chatbot-msg-bot{align-self:flex-start;background:#fff;border:1px solid #eee;color:#222}
.chatbot-msg-user{align-self:flex-end;background:var(--red);color:#fff}
.chatbot-form{display:flex;border-top:1px solid #eee}
.chatbot-form input{flex:1;border:none;padding:11px 12px;font-size:13.5px;outline:none}
.chatbot-form button{background:var(--red);color:#fff;border:none;width:46px;cursor:pointer}
.chatbot-form button:hover{background:var(--red-dark)}
@media(max-width:576px){.chatbot-panel{right:-8px}}

/* Chatbot quick replies */
.chatbot-quick-replies{display:flex;flex-wrap:wrap;gap:6px;margin-top:2px}
.chatbot-chip{background:#fff;border:1px solid var(--red);color:var(--red);border-radius:16px;padding:5px 11px;font-size:12px;cursor:pointer;transition:.15s}
.chatbot-chip:hover{background:var(--red);color:#fff}

/* Python Analytics section */
.py-analytics-card{background:linear-gradient(180deg,#fff,#fffdfd)}
.py-analytics-icon{width:46px;height:46px;border-radius:12px;background:#fff1f1;color:var(--red);display:flex;align-items:center;justify-content:center;font-size:22px;flex-shrink:0}
.py-analytics-empty{text-align:center;padding:36px 16px;color:#adb5bd}
.py-analytics-empty i{font-size:34px}

.chart-link-card{display:block;border:1px solid #eee;border-radius:12px;overflow:hidden;text-decoration:none;background:#fff;transition:.2s ease;box-shadow:0 1px 3px #0000000d}
.chart-link-card:hover{box-shadow:0 12px 30px #00000022;transform:translateY(-4px);border-color:var(--red)}
.chart-link-card img{display:block;width:100%;height:auto}
.chart-link-header{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:10px 14px;color:#fff;font-weight:700;font-size:.85rem;flex-wrap:wrap}
.chart-head-red{background:linear-gradient(135deg,var(--red),var(--red-dark))}
.chart-head-amber{background:linear-gradient(135deg,#f59e0b,#b45309)}
.chart-head-green{background:linear-gradient(135deg,#16a34a,#0f6e35)}
.chart-link-pill{background:#ffffff2e;padding:3px 10px;border-radius:20px;font-size:.72rem;font-weight:600}
.chart-link-overlay{display:flex;align-items:center;justify-content:flex-end;gap:6px;background:#f8f9fa;color:var(--red);font-weight:600;font-size:.8rem;padding:9px 14px;border-top:1px solid #eee;transition:.2s ease}
.chart-link-card:hover .chart-link-overlay{background:var(--red);color:#fff}

/* Enhanced avatar */
.avatar{font-weight:700;background:linear-gradient(135deg,var(--red),var(--red-dark));color:#fff;box-shadow:0 2px 8px #ed111840}
.avatar-lg{width:46px;height:46px;font-size:1.1rem;flex-shrink:0}

/* Profile chevron rotates when dropdown opens */
.chevron-icon{transition:transform .25s ease}
.user-chip[aria-expanded="true"] .chevron-icon{transform:rotate(180deg)}

/* Dropdown open animation (Bootstrap toggles display, so we use a keyframe
   animation rather than a transition, which won't play across display:none). */
.dropdown-menu.show{animation:dropdownPop .2s cubic-bezier(.16,1,.3,1)}
@keyframes dropdownPop{
  from{opacity:0;transform:translateY(-10px) scale(.96)}
  to{opacity:1;transform:translateY(0) scale(1)}
}

.profile-dropdown{min-width:230px;border:none;border-radius:14px;box-shadow:0 16px 40px #0002;padding:8px;transform-origin:top right}
.profile-dropdown-head{display:flex;align-items:center;gap:12px;padding:8px 10px 10px}
.profile-dropdown .dropdown-item{border-radius:8px;padding:9px 12px;display:flex;align-items:center;gap:10px;font-weight:500;transition:.15s;font-size:.92rem}
.profile-dropdown .dropdown-item i{width:18px;text-align:center;transition:.15s}
.profile-dropdown .dropdown-item:hover{background:#fff1f1;color:var(--red);transform:translateX(3px)}
.profile-dropdown .dropdown-item:hover i{color:var(--red)}
.profile-dropdown .dropdown-item.text-danger:hover{background:#fff1f1;color:var(--red-dark)!important}
.profile-dropdown .dropdown-divider{margin:4px 0;opacity:.08}

/* Back-to-home button on the login page */
.back-home{position:absolute;top:16px;left:16px;display:inline-flex;align-items:center;justify-content:center;gap:6px;color:#8a7566;font-size:.8rem;font-weight:600;text-decoration:none;width:36px;height:36px;border-radius:50%;background:#f8f9fa;border:1px solid #eee;transition:.2s ease;overflow:hidden;white-space:nowrap}
.back-home .arrow{display:inline-block;transition:transform .2s ease;font-size:1rem}
.back-home .label{max-width:0;opacity:0;transition:.2s ease}
.back-home:hover{color:#fff;background:var(--red);border-color:var(--red);width:auto;padding:0 16px 0 12px}
.back-home:hover .arrow{transform:translateX(-3px)}
.back-home:hover .label{max-width:120px;opacity:1;margin-left:2px}

/* Topbar back button (browser history), on every admin/cashier/customer page */
.topbar-back{width:36px;height:36px;border-radius:50%;border:1.5px solid #ffffff55;background:transparent;color:#fff;display:flex;align-items:center;justify-content:center;font-size:1rem;transition:.2s ease;flex-shrink:0}
.topbar-back:hover{background:#ffffff25;border-color:#fff;transform:translateX(-2px)}
.topbar-back:active{transform:translateX(-2px) scale(.92)}