/* ================================================================
               ROOT & RESET
               ================================================================ */
        :root {
            --primary:        #2481cc;
            --primary-dark:   #155f9d;
            --primary-light:  #dbeafe;
            --danger:         #ef4444;
            --success:        #10b981;
            --warning:        #f59e0b;
            --muted:          #6b7280;
            --text-color:     #1f2937;
            --card-bg:        rgba(255,255,255,0.88);
            --shadow:         0 24px 70px rgba(31,41,55,0.12);
            --radius-card:    32px;
            --radius-input:   18px;
            --radius-btn:     18px;
            --transition:     0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * { box-sizing: border-box; margin: 0; padding: 0; }

        body {
            min-height: 100vh;
            font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
            background: linear-gradient(145deg, #f0f5fe 0%, #ffffff 100%);
            color: var(--text-color);
            padding: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .app-shell {
            width: 100%;
            max-width: 420px;
        }

        /* ================================================================
               ANIMATIONS
               ================================================================ */
        @keyframes fadeSlideIn {
            0%   { opacity: 0; transform: translateY(24px) scale(0.97); }
            100% { opacity: 1; transform: translateY(0)    scale(1); }
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            20%      { transform: translateX(-6px); }
            40%      { transform: translateX(6px); }
            60%      { transform: translateX(-4px); }
            80%      { transform: translateX(4px); }
        }

        /* ================================================================
               SCREENS (all hidden by default, toggled via JS)
               ================================================================ */
        .screen {
            display: none;
            animation: fadeSlideIn 0.5s ease forwards;
        }
        .screen.active {
            display: block;
        }

        /* ================================================================
               LOGIN CARD
               ================================================================ */
        .login-card {
            padding: 34px 24px 28px;
            border-radius: var(--radius-card);
            background: var(--card-bg);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
            border: 1px solid rgba(255,255,255,0.7);
            box-shadow: var(--shadow);
        }

        /* --- Brand --- */
        .brand-block {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            margin-bottom: 26px;
        }

        .logo-wrap {
            width: 96px; height: 96px;
            border-radius: 50%;
            padding: 4px;
            background: linear-gradient(135deg, #fff 0%, rgba(36,129,204,0.20) 100%);
            box-shadow: 0 12px 30px rgba(36,129,204,0.22);
            margin-bottom: 14px;
            transition: var(--transition);
        }
        .logo-wrap:hover { transform: scale(1.04); }

        .logo {
            width: 100%; height: 100%;
            border-radius: 50%;
            object-fit: cover;
            display: block;
        }

        .brand-name {
            font-size: 28px;
            font-weight: 900;
            letter-spacing: -0.7px;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .brand-subtitle {
            margin-top: 6px;
            color: var(--muted);
            font-size: 14px;
            font-weight: 500;
        }

        /* --- Form --- */
        .form-group {
            margin-bottom: 18px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-size: 13px;
            font-weight: 700;
            color: #374151;
        }

        .input-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            background: #f8fafc;
            border: 2px solid #e5e7eb;
            border-radius: var(--radius-input);
            padding: 0 16px;
            transition: var(--transition);
        }

        .input-wrap:focus-within {
            background: #ffffff;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(36,129,204,0.10);
        }

        .input-wrap.error {
            border-color: var(--danger);
            box-shadow: 0 0 0 4px rgba(239,68,68,0.10);
            animation: shake 0.35s ease;
        }

        .input-icon {
            font-size: 18px;
            opacity: 0.6;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .input-wrap:focus-within .input-icon { opacity: 1; }

        .input-wrap input {
            width: 100%;
            border: none;
            outline: none;
            background: transparent;
            padding: 14px 0;
            color: var(--text-color);
            font-size: 15px;
            font-weight: 600;
        }

        .input-wrap input::placeholder {
            color: #9ca3af;
            font-weight: 500;
        }

        .input-wrap input:-webkit-autofill {
            -webkit-box-shadow: 0 0 0 30px #f8fafc inset !important;
            -webkit-text-fill-color: var(--text-color) !important;
        }

        .toggle-password {
            border: none;
            background: transparent;
            cursor: pointer;
            color: var(--muted);
            font-size: 18px;
            padding: 0;
            flex-shrink: 0;
            line-height: 1;
            transition: var(--transition);
            opacity: 0.65;
        }
        .toggle-password:hover {
            opacity: 1;
            color: var(--primary);
        }

        /* --- Strength --- */
        .password-strength {
            display: flex;
            gap: 5px;
            margin-top: 8px;
            height: 4px;
        }
        .password-strength span {
            flex: 1;
            border-radius: 4px;
            background: #e5e7eb;
            transition: var(--transition);
        }
        .password-strength span.active.weak   { background: var(--danger); }
        .password-strength span.active.medium { background: var(--warning); }
        .password-strength span.active.strong { background: var(--success); }

        .strength-label {
            font-size: 11px;
            font-weight: 600;
            margin-top: 4px;
            min-height: 16px;
            color: var(--muted);
        }

        /* --- Options --- */
        .login-options {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            margin: 8px 0 22px;
            font-size: 13px;
        }

        .remember {
            display: flex;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            user-select: none;
            color: #374151;
        }
        .remember input { width: auto; accent-color: var(--primary); }

        .forgot-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            font-size: 13px;
            transition: var(--transition);
        }
        .forgot-link:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        /* --- Button --- */
        .login-btn {
            width: 100%;
            border: none;
            border-radius: var(--radius-btn);
            padding: 15px 18px;
            cursor: pointer;
            color: #ffffff;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            box-shadow: 0 12px 26px rgba(36,129,204,0.30);
            font-size: 16px;
            font-weight: 800;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .login-btn:active { transform: scale(0.97); }
        .login-btn:disabled { opacity: 0.75; cursor: not-allowed; transform: none; }
        .login-btn .btn-text { transition: var(--transition); }
        .login-btn .spinner {
            display: none;
            width: 20px; height: 20px;
            border: 3px solid rgba(255,255,255,0.3);
            border-top-color: #fff;
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
        }
        .login-btn.loading .btn-text { opacity: 0; }
        .login-btn.loading .spinner { display: block; position: absolute; }

        /* --- Error --- */
        .error-message {
            display: none;
            margin-top: 16px;
            padding: 12px 14px;
            border-radius: 14px;
            background: rgba(239,68,68,0.08);
            color: var(--danger);
            font-size: 13px;
            font-weight: 700;
            text-align: center;
            border-left: 4px solid var(--danger);
            animation: fadeSlideIn 0.3s ease;
        }
        .error-message.show { display: block; }

        .hint {
            margin-top: 18px;
            text-align: center;
            color: var(--muted);
            font-size: 12px;
            font-weight: 500;
        }
        .hint code {
            background: var(--primary-light);
            color: var(--primary-dark);
            padding: 2px 8px;
            border-radius: 6px;
            font-weight: 700;
            font-size: 11px;
        }

        /* ================================================================
               DASHBOARD HEADER  (shared)
               ================================================================ */
        .dash-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
            padding: 14px 18px;
            background: var(--card-bg);
            backdrop-filter: blur(18px);
            border-radius: 22px;
            border: 1px solid rgba(255,255,255,0.6);
            box-shadow: 0 4px 14px rgba(0,0,0,0.04);
        }

        .dash-user {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .dash-avatar {
            width: 44px; height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            flex-shrink: 0;
        }

        .dash-user-info h2 {
            font-size: 16px; font-weight: 800; line-height: 1.2;
        }
        .dash-user-info p {
            font-size: 12px; color: var(--muted); font-weight: 500;
        }

        .dash-role-badge {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 10px;
            font-size: 10px;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }
        .role-admin  { background: rgba(239,68,68,0.12); color: var(--danger); }
        .role-client { background: rgba(16,185,129,0.12); color: var(--success); }

        .dash-logout-btn {
            border: none;
            background: transparent;
            color: var(--muted);
            font-size: 20px;
            cursor: pointer;
            padding: 6px;
            border-radius: 12px;
            transition: var(--transition);
            line-height: 1;
        }
        .dash-logout-btn:hover {
            background: rgba(239,68,68,0.08);
            color: var(--danger);
        }

        /* ================================================================
               SECTION TITLE
               ================================================================ */
        .section-title {
            font-size: 15px; font-weight: 800;
            margin-bottom: 12px;
            color: var(--text-color);
        }

        /* ================================================================
               GRID CARDS
               ================================================================ */
        .quick-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
            margin-bottom: 18px;
        }

        .quick-card {
            background: var(--card-bg);
            backdrop-filter: blur(12px);
            border-radius: 20px;
            padding: 20px 12px;
            text-align: center;
            box-shadow: 0 4px 14px rgba(0,0,0,0.04);
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            border: none;
            border-bottom: 4px solid transparent;
        }

        .quick-card:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(0,0,0,0.07); }
        .quick-card:active { transform: scale(0.96); }

        .quick-card .card-icon { font-size: 32px; margin-bottom: 6px; }
        .quick-card h4 { font-size: 14px; font-weight: 800; }
        .quick-card p { font-size: 11px; color: var(--muted); margin-top: 2px; }

        .card-green  { border-bottom-color: #2ecc71; color: #2ecc71; }
        .card-blue   { border-bottom-color: #3498db; color: #3498db; }
        .card-orange { border-bottom-color: #e67e22; color: #e67e22; }
        .card-purple { border-bottom-color: #9b59b6; color: #9b59b6; }
        .card-navy   { border-bottom-color: #104280; color: #34495e; }
        .card-red    { border-bottom-color: #e74c3c; color: #e74c3c; }
        .card-teal   { border-bottom-color: #1abc9c; color: #1abc9c; }
        .card-pink   { border-bottom-color: #e84393; color: #e84393; }

        .quick-card.full { grid-column: 1 / -1; }

        /* ================================================================
               REGISTRATION FORM
               ================================================================ */
        .reg-card {
            padding: 28px 22px 24px;
            border-radius: var(--radius-card);
            background: var(--card-bg);
            backdrop-filter: blur(24px);
            border: 1px solid rgba(255,255,255,0.7);
            box-shadow: var(--shadow);
        }

        .reg-back {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            border: none;
            background: none;
            color: var(--muted);
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            padding: 4px 0;
            margin-bottom: 16px;
            transition: var(--transition);
        }
        .reg-back:hover { color: var(--primary); }

        .reg-success {
            display: none;
            text-align: center;
            padding: 30px 0;
        }
        .reg-success.show { display: block; }
        .reg-success .icon { font-size: 56px; margin-bottom: 10px; }
        .reg-success h3 { font-size: 18px; font-weight: 800; margin-bottom: 6px; }
        .reg-success p { color: var(--muted); font-size: 13px; margin-bottom: 16px; }

        /* ================================================================
               ADMIN SPECIFIC
               ================================================================ */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-bottom: 18px;
        }

        .stat-card {
            background: var(--card-bg);
            backdrop-filter: blur(12px);
            border-radius: 16px;
            padding: 16px 10px;
            text-align: center;
            box-shadow: 0 4px 12px rgba(0,0,0,0.04);
        }

        .stat-card .stat-num {
            font-size: 22px;
            font-weight: 900;
            color: var(--primary);
        }
        .stat-card .stat-label {
            font-size: 11px;
            color: var(--muted);
            margin-top: 2px;
            font-weight: 600;
        }

        /* ================================================================
               RESPONSIVE
               ================================================================ */
        @media (max-width: 440px) {
            body { padding: 10px; }
            .login-card { padding: 26px 16px 22px; border-radius: 26px; }
            .brand-name { font-size: 24px; }
            .logo-wrap { width: 80px; height: 80px; }
            .quick-grid { gap: 10px; }
            .quick-card { padding: 16px 8px; }
            .stats-row { gap: 6px; }
            .stat-card { padding: 12px 6px; }
            .dash-header { padding: 12px 14px; }
        }

        /* ================================================================
               DARK MODE
               ================================================================ */
        @media (prefers-color-scheme: dark) {
            body { background: linear-gradient(145deg, #0f172a 0%, #1e293b 100%); }
            :root {
                --text-color: #f1f5f9;
                --card-bg:  rgba(30,41,59,0.85);
                --shadow:   0 24px 70px rgba(0,0,0,0.4);
                --primary-light: #1e3a5f;
            }
            .input-wrap { background: #1e293b; border-color: #334155; }
            .input-wrap:focus-within { background: #0f172a; border-color: var(--primary); }
            .input-wrap input:-webkit-autofill {
                -webkit-box-shadow: 0 0 0 30px #1e293b inset !important;
                -webkit-text-fill-color: #f1f5f9 !important;
            }
            .form-group label { color: #cbd5e1; }
            .remember { color: #cbd5e1; }
            .login-card,
            .reg-card,
            .dash-header,
            .quick-card,
            .stat-card { border-color: rgba(255,255,255,0.06); }
            .hint code { background: #1e293b; }
            .prod-card { background: #1e293b; border-color: rgba(255,255,255,0.06); }
            .search-bar input { background:#1e293b; color:#e5e7eb; }
        }

        /* ===== Mahsulotlar / ro'yxat ekranlari ===== */
        .list-header {
            display:flex; align-items:center; gap:10px; margin-bottom:14px;
        }
        .list-header h2 { font-size:18px; font-weight:800; }
        .list-back {
            background:var(--primary-light); color:var(--primary-dark);
            border:none; border-radius:12px; padding:8px 12px; font-size:14px;
            font-weight:700; cursor:pointer;
        }
        .search-bar {
            position:relative; display:flex; align-items:center;
            background:#fff; border:1px solid #e5e7eb; border-radius:14px;
            padding:0 12px; margin-bottom:14px;
        }
        .search-bar .search-ic { font-size:16px; opacity:.6; }
        .search-bar input {
            flex:1; border:none; outline:none; background:transparent;
            padding:13px 8px; font-size:15px; color:var(--text,#111);
        }
        .search-clear {
            background:none; border:none; font-size:16px; color:var(--muted);
            cursor:pointer; padding:4px;
        }
        .scan-btn {
            background:var(--primary-light); border:none; border-radius:10px;
            font-size:18px; cursor:pointer; padding:7px 10px; margin-left:4px;
            line-height:1;
        }
        .scan-btn:active { transform:scale(0.92); }
        /* ===== Skaner overlay ===== */
        #scanOverlay {
            display:none; position:fixed; inset:0; background:#000;
            z-index:300; flex-direction:column;
        }
        #scanOverlay.active { display:flex; }
        .scan-top {
            display:flex; justify-content:space-between; align-items:center;
            padding:16px 18px; color:#fff;
        }
        .scan-title { font-weight:700; font-size:15px; }
        .scan-close {
            background:rgba(255,255,255,0.18); color:#fff; border:none;
            border-radius:11px; padding:9px 15px; font-size:15px; cursor:pointer;
        }
        /* Kamera ekranning yuqori qismida — ramka teparoqda turadi */
        #reader { width:100%; height:46vh; margin-top:4px; overflow:hidden; position:relative; }
        #reader video { width:100% !important; height:100% !important; object-fit:cover; }
        /* Quagga2 video va debug-canvas */
        #reader canvas.drawingBuffer { display:none; }   /* debug chiziqlarni yashiramiz */
        #reader canvas { position:absolute; top:0; left:0; }
        .scan-hint { color:#fff; text-align:center; padding:14px 18px; font-size:14px; opacity:.85; }
        .prod-list { display:flex; flex-direction:column; gap:10px; }
        .prod-card {
            display:flex; justify-content:space-between; align-items:center;
            gap:12px; background:var(--card-bg); border:1px solid #e5e7eb;
            border-radius:16px; padding:13px 15px; cursor:pointer;
            transition:transform .12s, box-shadow .12s;
        }
        .prod-card:active { transform:scale(0.98); }
        .prod-info { min-width:0; flex:1; }
        .prod-name {
            font-weight:700; font-size:15px; margin-bottom:3px;
            white-space:nowrap; overflow:hidden; text-overflow:ellipsis;
        }
        .prod-meta { font-size:12.5px; color:var(--muted); }
        .prod-right { text-align:right; flex-shrink:0; }
        .prod-price { font-weight:800; font-size:15px; color:var(--primary-dark); }
        .prod-qty { font-size:12px; margin-top:3px; }
        .qty-ok  { color:#16a34a; }
        .qty-low { color:#dc2626; }
        .list-status { text-align:center; color:var(--muted); padding:18px 0; font-size:14px; }
        /* ===== Mahsulot CRUD: forma, rasm, detal ===== */
        .add-btn {
            background:var(--primary); color:#fff; border:none; border-radius:11px;
            padding:8px 12px; font-size:13px; font-weight:700; cursor:pointer;
            margin-left:auto;
        }
        .form-card {
            background:var(--card-bg); border:1px solid #e5e7eb;
            border-radius:18px; padding:16px;
        }
        .form-card label {
            display:block; font-size:13px; font-weight:700; color:var(--muted);
            margin:12px 0 5px;
        }
        .form-card input, .form-card select, .form-card textarea {
            width:100%; border:1px solid #e5e7eb; border-radius:12px;
            padding:12px; font-size:15px; background:#fff; color:var(--text,#111);
            outline:none;
        }
        .form-card input:focus, .form-card select:focus, .form-card textarea:focus {
            border-color:var(--primary);
        }
        .form-row { display:flex; gap:10px; align-items:flex-end; }
        .bc-row { display:flex; gap:8px; align-items:center; }
        .bc-row input { flex:1; }
        .img-upload {
            width:100%; height:160px; border:2px dashed #cbd5e1; border-radius:16px;
            display:flex; align-items:center; justify-content:center; cursor:pointer;
            color:var(--muted); text-align:center; font-size:14px; overflow:hidden;
            background:#f8fafc;
        }
        .img-upload img { width:100%; height:100%; object-fit:cover; }
        .save-btn {
            width:100%; margin-top:18px; padding:15px; border:none; border-radius:14px;
            background:#16a34a; color:#fff; font-weight:800; font-size:16px; cursor:pointer;
        }
        .save-btn:disabled { opacity:.6; }
        .detail-img {
            width:100%; height:200px; object-fit:cover; border-radius:18px;
            margin-bottom:14px; background:#f1f5f9;
        }
        .detail-actions { display:flex; gap:10px; margin-top:16px; }
        .act-btn {
            flex:1; padding:13px; border:none; border-radius:13px; font-weight:700;
            font-size:14px; cursor:pointer;
        }
        .act-edit  { background:var(--primary); color:#fff; }
        .act-qty   { background:#f59e0b; color:#fff; }
        .act-del   { background:#fee2e2; color:#b91c1c; }
        .more-btn {
            width:100%; margin-top:12px; padding:13px; border:none;
            border-radius:14px; background:var(--primary-light);
            color:var(--primary-dark); font-weight:700; font-size:15px; cursor:pointer;
        }
        .prod-badge {
            display:inline-block; font-size:11px; font-weight:700;
            background:var(--primary-light); color:var(--primary-dark);
            border-radius:8px; padding:2px 7px; margin-left:6px;
        }
        /* ===== Statistika / hisobim ===== */
        .stat-block {
            background:var(--card-bg); border:1px solid #e5e7eb;
            border-radius:18px; padding:16px; margin-bottom:14px;
        }
        .stat-block h3 { font-size:15px; font-weight:800; margin-bottom:12px; }
        .stat-row {
            display:flex; justify-content:space-between; align-items:center;
            padding:8px 0; border-bottom:1px dashed #e5e7eb; font-size:14px;
        }
        .stat-row:last-child { border-bottom:none; }
        .stat-row .lbl { color:var(--muted); }
        .stat-row .val { font-weight:800; }
        .val-green { color:#16a34a; }
        .val-red   { color:#dc2626; }
        .big-num {
            font-size:26px; font-weight:900; color:var(--primary-dark);
            text-align:center; margin:4px 0;
        }
        .big-label { text-align:center; color:var(--muted); font-size:13px; margin-bottom:4px; }
        .toprow {
            display:flex; justify-content:space-between; padding:7px 0;
            border-bottom:1px dashed #e5e7eb; font-size:13.5px;
        }
        .toprow:last-child { border-bottom:none; }
        /* ===== POS / savat ===== */
        .cart-bar {
            position:fixed; left:14px; right:14px; bottom:14px;
            background:linear-gradient(135deg,var(--primary),var(--primary-dark));
            color:#fff; border-radius:16px; padding:14px 18px;
            display:flex; justify-content:space-between; align-items:center;
            font-weight:800; font-size:15px; cursor:pointer; z-index:50;
            box-shadow:0 6px 20px rgba(36,129,204,0.4);
        }
        .cart-bar-go { background:rgba(255,255,255,0.25); padding:5px 11px; border-radius:10px; }
        .cart-line {
            display:flex; align-items:center; gap:10px;
            background:var(--card-bg); border:1px solid #e5e7eb;
            border-radius:14px; padding:11px 13px;
        }
        .cart-line .ci-info { flex:1; min-width:0; }
        .cart-line .ci-name { font-weight:700; font-size:14px;
            white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
        .cart-line .ci-price { font-size:12.5px; color:var(--muted); }
        .qty-ctrl { display:flex; align-items:center; gap:8px; }
        .qty-btn {
            width:30px; height:30px; border:none; border-radius:9px;
            background:var(--primary-light); color:var(--primary-dark);
            font-size:18px; font-weight:800; cursor:pointer; line-height:1;
        }
        .qty-val { min-width:26px; text-align:center; font-weight:800; font-size:15px; }
        .ci-remove { background:none;border:none;color:#dc2626;font-size:17px;cursor:pointer;padding:4px; }
        .pay-btn {
            flex:1; padding:14px; border:none; border-radius:14px;
            background:#16a34a; color:#fff; font-weight:800; font-size:16px; cursor:pointer;
        }
        .pay-btn.pay-card { background:var(--primary); }
        .pay-btn:disabled { opacity:.6; }
        .in-cart-badge {
            background:#16a34a; color:#fff; font-size:12px; font-weight:800;
            border-radius:8px; padding:2px 8px;
        }