*{box-sizing:border-box;margin:0;padding:0}
        :root{
            --primary:#2563eb;--primary-dark:#1e40af;--primary-light:#3b82f6;
            --accent:#06b6d4;--success:#10b981;
            --ink:#0f172a;--ink-soft:#1e293b;--muted:#64748b;--muted-soft:#94a3b8;
            --border:#e2e8f0;--bg-soft:#f8fafc;
        }
        html,body{height:100%}
        body{font-family:'Be Vietnam Pro',sans-serif;min-height:100vh;display:flex;overflow:hidden;background:#0b1a35;color:var(--ink)}

        /* ===== Left panel - branding ===== */
        .left-panel{
            flex:1;position:relative;overflow:hidden;color:#fff;
            background:radial-gradient(1200px 600px at 20% 10%,rgba(59,130,246,.55),transparent 60%),
                       radial-gradient(900px 500px at 90% 90%,rgba(6,182,212,.45),transparent 55%),
                       linear-gradient(135deg,#0b1a35 0%,#1e3a8a 55%,#2563eb 100%);
            display:flex;flex-direction:column;justify-content:center;padding:64px 72px;
        }
        /* Animated blobs */
        .blob{position:absolute;border-radius:50%;filter:blur(60px);opacity:.45;pointer-events:none;animation:float 14s ease-in-out infinite}
        .blob.b1{width:420px;height:420px;background:#3b82f6;top:-120px;right:-120px;animation-delay:-2s}
        .blob.b2{width:520px;height:520px;background:#06b6d4;bottom:-180px;left:-160px;animation-delay:-7s}
        .blob.b3{width:260px;height:260px;background:#8b5cf6;top:40%;left:60%;opacity:.25;animation-delay:-4s}
        @keyframes float{
            0%,100%{transform:translate(0,0) scale(1)}
            50%{transform:translate(20px,-30px) scale(1.06)}
        }
        /* Subtle grid */
        .left-panel::after{
            content:'';position:absolute;inset:0;
            background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),
                             linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);
            background-size:42px 42px;mask-image:radial-gradient(ellipse at center,#000 30%,transparent 80%);
            -webkit-mask-image:radial-gradient(ellipse at center,#000 30%,transparent 80%);
            pointer-events:none;
        }
        .left-content{position:relative;z-index:2;max-width:520px;animation:fadeUp .8s ease both}
        @keyframes fadeUp{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}

        .left-logo{display:flex;align-items:center;gap:14px;margin-bottom:56px}
        .left-logo-icon{
            width:56px;height:56px;border-radius:16px;display:flex;align-items:center;justify-content:center;
            font-size:26px;color:#fff;
            background:linear-gradient(135deg,rgba(255,255,255,.22),rgba(255,255,255,.06));
            border:1px solid rgba(255,255,255,.25);backdrop-filter:blur(10px);
            box-shadow:0 10px 30px rgba(0,0,0,.25),inset 0 1px 0 rgba(255,255,255,.4);
        }
        .left-logo-text{font-size:24px;font-weight:800;letter-spacing:-.02em}
        .left-logo-sub{font-size:12px;opacity:.7;margin-top:2px}

        .badge-pill{
            display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
            background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
            font-size:12px;font-weight:600;backdrop-filter:blur(6px);margin-bottom:18px;
        }
        .badge-pill .dot{width:8px;height:8px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 4px rgba(34,197,94,.25);animation:pulse 2s ease-in-out infinite}
        @keyframes pulse{50%{box-shadow:0 0 0 8px rgba(34,197,94,0)}}

        .left-title{
            font-size:clamp(1.9rem,3vw,2.6rem);font-weight:800;line-height:1.18;
            letter-spacing:-.02em;margin-bottom:18px;
        }
        .left-title .accent{
            background:linear-gradient(90deg,#7dd3fc,#67e8f9 60%,#a7f3d0);
            -webkit-background-clip:text;background-clip:text;color:transparent;
        }
        .left-desc{font-size:15px;opacity:.82;line-height:1.7;margin-bottom:36px;max-width:460px}

        .feature-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:36px}
        .feature-item{
            display:flex;align-items:center;gap:12px;font-size:13.5px;font-weight:500;
            padding:12px 14px;border-radius:14px;
            background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.1);
            backdrop-filter:blur(6px);transition:all .25s;
        }
        .feature-item:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
        .feature-icon{
            width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;
            font-size:15px;flex-shrink:0;
            background:linear-gradient(135deg,rgba(125,211,252,.25),rgba(255,255,255,.08));
            border:1px solid rgba(255,255,255,.15);
        }

        /* Stats */
        .stats{display:flex;gap:28px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12)}
        .stat-num{font-size:22px;font-weight:800;letter-spacing:-.02em}
        .stat-num .accent{color:#7dd3fc}
        .stat-label{font-size:11.5px;opacity:.7;margin-top:2px}

        /* ===== Right panel - form ===== */
        .right-panel{
            width:640px;flex-shrink:0;display:flex;flex-direction:column;justify-content:center;
            padding:56px 72px;background:#fff;position:relative;
        }
        .right-inner{width:100%;max-width:480px;margin:0 auto;animation:fadeUp .8s .1s ease both}

        .mobile-logo{display:none;align-items:center;gap:10px;margin-bottom:24px;justify-content:center}
        .mobile-logo .icon{
            width:42px;height:42px;border-radius:12px;display:flex;align-items:center;justify-content:center;
            color:#fff;font-size:18px;background:linear-gradient(135deg,#2563eb,#06b6d4);
            box-shadow:0 6px 18px rgba(37,99,235,.35);
        }
        .mobile-logo .text{font-size:18px;font-weight:800;color:var(--ink)}

        .form-header{margin-bottom:28px}
        .form-eyebrow{
            display:inline-flex;align-items:center;gap:6px;font-size:11.5px;font-weight:700;
            color:var(--primary);background:#eff6ff;border:1px solid #dbeafe;
            padding:5px 10px;border-radius:999px;margin-bottom:14px;letter-spacing:.04em;text-transform:uppercase;
        }
        .form-header h2{font-size:26px;font-weight:800;color:var(--ink);margin-bottom:8px;letter-spacing:-.02em}
        .form-header p{font-size:14px;color:var(--muted);line-height:1.5}

        .form-label{font-weight:600;font-size:13px;color:#334155;margin-bottom:8px;display:block}
        .input-wrap{
            border:1.5px solid var(--border);border-radius:14px;display:flex;align-items:center;
            overflow:hidden;transition:border-color .2s,box-shadow .2s,background .2s;background:#fff;
        }
        .input-wrap:hover{border-color:#cbd5e1}
        .input-wrap:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(37,99,235,.12);background:#fff}
        .input-wrap i{padding:0 14px;color:var(--muted-soft);font-size:17px;transition:color .2s}
        .input-wrap:focus-within i{color:var(--primary)}
        .input-wrap input{
            flex:1;border:none;outline:none;padding:14px 14px 14px 0;font-size:14.5px;
            font-family:'Be Vietnam Pro',sans-serif;color:var(--ink);background:transparent;
        }
        .input-wrap input::placeholder{color:var(--muted-soft)}
        .input-wrap .toggle-pass{
            background:none;border:none;border-left:1px solid var(--border);
            padding:0 14px;cursor:pointer;color:var(--muted-soft);font-size:16px;height:48px;transition:color .2s;
        }
        .input-wrap .toggle-pass:hover{color:var(--primary)}

        .row-options{display:flex;justify-content:space-between;align-items:center;margin:18px 0 22px}
        .check-remember{display:flex;align-items:center;gap:8px;font-size:13px;cursor:pointer;color:var(--muted);user-select:none}
        .check-remember input{accent-color:var(--primary);width:15px;height:15px;cursor:pointer}
        .forgot-link{font-size:13px;color:var(--primary);text-decoration:none;font-weight:600;transition:color .2s}
        .forgot-link:hover{color:var(--primary-dark);text-decoration:underline}

        .btn-login{
            width:100%;padding:15px;border:none;border-radius:14px;color:#fff;font-size:15px;font-weight:700;
            cursor:pointer;transition:all .25s;font-family:'Be Vietnam Pro',sans-serif;
            background:linear-gradient(135deg,#1e40af 0%,#2563eb 50%,#06b6d4 100%);
            background-size:200% 100%;background-position:0% 50%;
            box-shadow:0 8px 24px rgba(37,99,235,.35),inset 0 1px 0 rgba(255,255,255,.2);
            display:flex;align-items:center;justify-content:center;gap:8px;letter-spacing:.01em;
        }
        .btn-login:hover{transform:translateY(-2px);background-position:100% 50%;box-shadow:0 12px 30px rgba(37,99,235,.45)}
        .btn-login:active{transform:translateY(0)}
        .btn-login:disabled{opacity:.7;cursor:not-allowed;transform:none}
        .spinner{width:16px;height:16px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;display:inline-block}
        @keyframes spin{to{transform:rotate(360deg)}}

        .divider{display:flex;align-items:center;gap:14px;margin:24px 0;color:var(--muted-soft);font-size:11.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase}
        .divider::before,.divider::after{content:'';flex:1;height:1px;background:linear-gradient(to right,transparent,var(--border),transparent)}

        .register-box{
            text-align:center;padding:18px 20px;border-radius:14px;
            background:linear-gradient(135deg,#f8fafc,#eff6ff);
            border:1px solid var(--border);
        }
        .register-box p{font-size:13px;color:var(--muted);margin-bottom:10px}
        .btn-register{
            display:inline-flex;align-items:center;gap:8px;padding:10px 22px;background:#fff;
            border:1.5px solid var(--primary);border-radius:11px;color:var(--primary);
            font-size:13.5px;font-weight:700;cursor:pointer;transition:all .2s;text-decoration:none;
            font-family:'Be Vietnam Pro',sans-serif;
        }
        .btn-register:hover{background:var(--primary);color:#fff;transform:translateY(-1px);box-shadow:0 6px 16px rgba(37,99,235,.3)}

        .alert-box{
            border-radius:12px;font-size:13px;font-weight:500;padding:12px 14px;margin-bottom:16px;
            display:flex;align-items:center;gap:10px;animation:slideDown .3s ease;
        }
        @keyframes slideDown{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
        .alert-error{background:#fef2f2;border:1px solid #fecaca;color:#dc2626}
        .alert-success{background:#f0fdf4;border:1px solid #bbf7d0;color:#15803d}
        .alert-box i{font-size:16px;flex-shrink:0}

        .footer-text{text-align:center;font-size:11.5px;color:var(--muted-soft);margin-top:26px;line-height:1.6}
        .footer-text a{color:var(--primary);text-decoration:none;font-weight:600}
        .footer-text a:hover{text-decoration:underline}

        /* ===== Tablet ===== */
        @media(max-width:1100px){
            .right-panel{width:460px;padding:40px 36px}
            .left-panel{padding:48px 48px}
            .feature-list{grid-template-columns:1fr}
        }

        /* ===== Mobile ===== */
        @media(max-width:860px){
            body{display:block;overflow:auto;background:linear-gradient(135deg,#1e3a8a 0%,#2563eb 60%,#06b6d4 100%);min-height:100vh;padding:24px 16px}
            .left-panel{display:none}
            .right-panel{
                width:100%;max-width:440px;margin:24px auto;padding:32px 24px;
                border-radius:24px;box-shadow:0 24px 60px rgba(0,0,0,.25),0 8px 24px rgba(0,0,0,.1);
                border:1px solid rgba(255,255,255,.4);
            }
            .mobile-logo{display:flex}
            .form-header h2{font-size:22px}
        }
        @media(max-width:420px){
            .right-panel{padding:28px 20px}
        }