*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{height:100%}
body{font-family:'DM Sans',sans-serif;background:#f1f5f9;color:#334155;min-height:100%;overflow-x:hidden}
input,select,textarea,button{font-family:'DM Sans',sans-serif}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@keyframes notifIn{from{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}
@keyframes notifOut{from{opacity:1}to{opacity:0;transform:translateY(-20px)}}
@keyframes modalIn{from{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}
.app{display:flex;min-height:100vh}
.sidebar{width:260px;background:#fff;border-right:1px solid #e2e8f0;display:flex;flex-direction:column;position:fixed;top:0;left:0;bottom:0;z-index:50;transform:translateX(-100%);transition:transform .3s ease;box-shadow:2px 0 12px rgba(0,0,0,.04)}
.sidebar.open{transform:translateX(0)}
.sidebar-overlay{position:fixed;inset:0;background:rgba(15,23,42,.3);z-index:40;display:none}
.sidebar-overlay.show{display:block}
.logo{display:flex;align-items:center;gap:12px;padding:24px 20px;border-bottom:1px solid #e2e8f0}
.logo-icon{width:40px;height:40px;border-radius:10px;background:linear-gradient(135deg,#6366f1,#8b5cf6);display:flex;align-items:center;justify-content:center;color:#fff}
.logo-text{font-size:18px;font-weight:700;letter-spacing:-.02em;color:#0f172a}
.logo-sub{font-size:11px;color:#94a3b8;font-family:'Space Mono',monospace;letter-spacing:.08em}
.nav{flex:1;padding:16px 12px;display:flex;flex-direction:column;gap:4px}
.nav-item{display:flex;align-items:center;gap:12px;padding:10px 14px;border-radius:10px;border:none;background:transparent;color:#64748b;cursor:pointer;font-size:14px;font-weight:500;transition:all .2s;text-align:left;font-family:'DM Sans',sans-serif}
.nav-item:hover{background:#f8fafc;color:#475569}
.nav-item.active{background:linear-gradient(135deg,rgba(99,102,241,.1),rgba(139,92,246,.06));color:#6366f1}
.nav-badge{margin-left:auto;background:#ef4444;color:#fff;font-size:11px;font-weight:700;padding:2px 8px;border-radius:20px;font-family:'Space Mono',monospace}
.sidebar-footer{padding:16px 20px;border-top:1px solid #e2e8f0;font-size:11px;color:#94a3b8;font-family:'Space Mono',monospace}
.main-content{flex:1;margin-left:0;min-height:100vh}
.header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid #e2e8f0;background:#fff;position:sticky;top:0;z-index:30;gap:12px;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.menu-btn{background:none;border:none;color:#64748b;cursor:pointer;padding:4px;display:flex}
.page-title{font-size:20px;font-weight:700;color:#0f172a;letter-spacing:-.02em;flex:1}
.header-actions{display:flex;gap:10px}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:10px;border:none;background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff;font-weight:600;font-size:14px;cursor:pointer;transition:all .2s;white-space:nowrap;box-shadow:0 2px 8px rgba(99,102,241,.25)}
.btn-primary:hover{filter:brightness(1.05);transform:translateY(-1px);box-shadow:0 4px 14px rgba(99,102,241,.3)}
.btn-primary.sm{font-size:12px;padding:6px 14px}
.btn-secondary{padding:10px 20px;border-radius:10px;border:1px solid #e2e8f0;background:#fff;color:#64748b;font-weight:600;font-size:14px;cursor:pointer}
.btn-secondary:hover{border-color:#cbd5e1;color:#334155;background:#f8fafc}
.icon-btn{background:#fff;border:1px solid #e2e8f0;border-radius:8px;color:#64748b;cursor:pointer;padding:6px;display:inline-flex;align-items:center;transition:all .15s}
.icon-btn:hover{border-color:#cbd5e1;color:#334155;background:#f8fafc}
.icon-btn.danger{color:#ef4444}
.icon-btn.danger:hover{background:#fef2f2;border-color:#fca5a5}
.content{padding:24px}
.page{display:none;animation:fadeIn .4s ease}
.page.active{display:block}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px}
.stat-card{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:20px 20px 16px;animation:fadeIn .5s ease both;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.stat-dot{width:8px;height:8px;border-radius:50%;margin-bottom:10px}
.stat-label{font-size:12px;color:#94a3b8;font-weight:500;text-transform:uppercase;letter-spacing:.06em;font-family:'Space Mono',monospace}
.stat-value{font-size:26px;font-weight:700;color:#0f172a;margin-top:4px;font-family:'Space Mono',monospace;letter-spacing:-.02em}
.stat-sub{font-size:12px;color:#94a3b8;margin-top:4px}
.card{background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:20px;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}
.card-title{font-size:15px;font-weight:700;color:#1e293b}
.dash-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:20px}
.alert-row{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:1px solid #f1f5f9}
.alert-row:last-child{border-bottom:none}
.cat-card{background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;padding:12px 16px;flex:1 1 140px;min-width:140px}
.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:11px;font-weight:600}
.badge-success{background:#d1fae5;color:#059669}
.badge-warning{background:#fef3c7;color:#d97706}
.badge-danger{background:#fee2e2;color:#dc2626}
.cat-badge{display:inline-block;padding:3px 10px;border-radius:8px;font-size:11px;font-weight:600;background:#f1f5f9;color:#475569}
.imei-badge{font-family:'Space Mono',monospace;font-size:12px;color:#4f46e5;background:#eef2ff;padding:4px 8px;border-radius:6px;display:inline-block;letter-spacing:.03em}
.imei-na{color:#cbd5e1;font-size:12px}
.filters-bar{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap}
.search-wrap{display:flex;align-items:center;gap:8px;background:#fff;border:1px solid #e2e8f0;border-radius:10px;padding:0 14px;flex:1 1 240px;min-width:200px}
.search-wrap input{flex:1;background:transparent;border:none;outline:none;color:#1e293b;padding:10px 0;font-size:14px}
.search-wrap input::placeholder{color:#94a3b8}
.filter-select{background:#fff;border:1px solid #e2e8f0;border-radius:10px;color:#475569;padding:10px 14px;font-size:13px;outline:none;cursor:pointer}
.table-wrap{overflow-x:auto;border-radius:14px;border:1px solid #e2e8f0;background:#fff;box-shadow:0 1px 3px rgba(0,0,0,.04)}
table{width:100%;border-collapse:collapse;font-size:14px}
th{text-align:left;padding:12px 16px;color:#94a3b8;font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.06em;font-family:'Space Mono',monospace;border-bottom:1px solid #e2e8f0;white-space:nowrap;cursor:pointer;user-select:none;background:#f8fafc}
th .sort-icon{display:inline-flex;vertical-align:middle;margin-left:4px}
td{padding:14px 16px;color:#64748b;white-space:nowrap}
tr{border-bottom:1px solid #f1f5f9}
tbody tr{animation:fadeIn .3s ease both;transition:background .15s}
tbody tr:hover{background:#f8fafc}
.td-name{font-weight:600;color:#0f172a}
.td-sub{font-size:12px;color:#94a3b8;margin-top:2px}
.td-mono{font-family:'Space Mono',monospace}
.td-price{font-family:'Space Mono',monospace;font-weight:600;color:#334155}
.td-stock-ok{font-family:'Space Mono',monospace;font-weight:700;color:#1e293b}
.td-stock-low{font-family:'Space Mono',monospace;font-weight:700;color:#d97706}
.td-stock-out{font-family:'Space Mono',monospace;font-weight:700;color:#dc2626}
.empty-msg{text-align:center;padding:40px;color:#94a3b8}
.alert-card{background:#fff;border:1px solid #e2e8f0;border-radius:12px;padding:16px 20px;margin-bottom:10px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;box-shadow:0 1px 3px rgba(0,0,0,.04)}
.alert-card.danger{border-left:3px solid #ef4444}
.alert-card.warning{border-left:3px solid #f59e0b}
.alert-section-title{font-size:16px;font-weight:700;margin-bottom:12px}
.alert-item-name{font-weight:600;color:#0f172a}
.alert-item-sub{font-size:12px;color:#94a3b8}
.alert-item-imei{font-size:11px;color:#4f46e5;font-family:'Space Mono',monospace;margin-top:4px}
.all-clear{text-align:center;padding:60px;color:#94a3b8}
.all-clear-icon{font-size:48px;margin-bottom:12px}
.modal-overlay{position:fixed;inset:0;background:rgba(15,23,42,.35);z-index:100;display:none;align-items:center;justify-content:center;padding:20px;backdrop-filter:blur(4px)}
.modal-overlay.show{display:flex}
.modal{background:#fff;border-radius:18px;width:100%;max-width:640px;max-height:90vh;overflow:auto;border:1px solid #e2e8f0;animation:modalIn .3s ease;box-shadow:0 20px 60px rgba(0,0,0,.15)}
.modal.sm{max-width:480px}
.modal-header{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;border-bottom:1px solid #f1f5f9}
.modal-title{font-size:18px;font-weight:700;color:#0f172a}
.close-btn{background:none;border:none;color:#94a3b8;cursor:pointer;padding:4px;display:flex}
.close-btn:hover{color:#334155}
.modal-body{padding:20px 24px}
.modal-footer{display:flex;justify-content:flex-end;gap:12px;padding:16px 24px;border-top:1px solid #f1f5f9}
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-label{font-size:12px;font-weight:600;color:#94a3b8;text-transform:uppercase;letter-spacing:.04em}
.form-input{background:#f8fafc;border:1px solid #e2e8f0;border-radius:10px;color:#1e293b;padding:10px 14px;font-size:14px;outline:none;width:100%}
.form-input:focus{border-color:#6366f1;box-shadow:0 0 0 3px rgba(99,102,241,.1)}
.imei-section{margin-top:20px;padding:16px;background:#eef2ff;border-radius:12px;border:1px solid #c7d2fe}
.imei-header{display:flex;align-items:center;gap:8px;margin-bottom:12px;flex-wrap:wrap}
.imei-label{font-size:13px;font-weight:700;color:#4f46e5;letter-spacing:.04em}
.imei-req-badge{font-size:11px;color:#6366f1;background:#ddd6fe;padding:2px 8px;border-radius:6px;font-weight:600}
.imei-input{background:#fff;border:1px solid #c7d2fe;border-radius:10px;color:#1e293b;padding:12px 16px;font-size:16px;outline:none;width:100%;font-family:'Space Mono',monospace;letter-spacing:.1em}
.imei-input:focus{border-color:#6366f1;box-shadow:0 0 0 3px rgba(99,102,241,.1)}
.imei-input.valid{border-color:#059669}
.imei-input.valid:focus{box-shadow:0 0 0 3px rgba(5,150,105,.1)}
.imei-footer{display:flex;justify-content:space-between;margin-top:8px;flex-wrap:wrap;gap:4px}
.imei-hint{font-size:11px;color:#64748b}
.imei-status{font-size:11px;font-weight:600;font-family:'Space Mono',monospace}
.imei-status.valid{color:#059669}
.imei-status.partial{color:#d97706}
.serial-section{margin-top:16px}
.sale-summary{padding:16px;background:#f8fafc;border-radius:10px;border:1px solid #e2e8f0}
.sale-imei-row{display:flex;justify-content:space-between;color:#64748b;font-size:13px;align-items:center;margin-bottom:10px;padding-bottom:10px;border-bottom:1px solid #e2e8f0}
.sale-total-row{display:flex;justify-content:space-between;color:#64748b;font-size:13px;align-items:center}
.sale-total-value{color:#059669;font-weight:700;font-size:18px;font-family:'Space Mono',monospace}
.notification{position:fixed;top:20px;right:20px;z-index:1000;padding:14px 24px;border-radius:12px;color:#fff;font-size:14px;font-weight:500;animation:notifIn .3s ease;box-shadow:0 8px 32px rgba(0,0,0,.15)}
.notification.hide{animation:notifOut .3s ease forwards}
.notification.success{background:#10b981}
.notification.error{background:#ef4444}
.notification.info{background:#3b82f6}
@media(min-width:768px){.sidebar{transform:translateX(0)}.main-content{margin-left:260px}.menu-btn{display:none}.sidebar-overlay{display:none!important}}
@media(max-width:500px){.stats-grid{grid-template-columns:1fr 1fr;gap:10px}.stat-value{font-size:20px}.content{padding:16px}.header{padding:12px 16px}.dash-grid{grid-template-columns:1fr}}

.hidden{display:none!important}
.login{min-height:100vh;display:grid;place-items:center;padding:24px;background:#f1f5f9}
.login-card{width:min(420px,100%);background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:24px;display:grid;gap:14px;box-shadow:0 6px 18px rgba(15,23,42,.06)}
.login-card form{display:grid;gap:12px}
.login-card label{display:grid;gap:6px;font-size:13px;color:#64748b}
.login-card input,.login-card select{border:1px solid #e2e8f0;border-radius:10px;padding:10px 12px;font-size:14px;color:#0f172a}
.login-card input:focus,.login-card select:focus{outline:none;border-color:#6366f1;box-shadow:0 0 0 3px rgba(99,102,241,.12)}