body {
            min-height: 100vh;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 16px;
            overflow: hidden;
            background:
                radial-gradient(circle at 18% 18%, rgba(74, 222, 128, 0.16), transparent 20%),
                radial-gradient(circle at 82% 24%, rgba(56, 189, 248, 0.18), transparent 24%),
                radial-gradient(circle at 72% 78%, rgba(45, 212, 191, 0.14), transparent 22%),
                linear-gradient(135deg, #071018 0%, #0a1622 42%, #0d1d1d 100%);
        }

        @keyframes background-pan {
            0% {
                background-position: 0% 0%;
            }
            50% {
                background-position: 100% 100%;
            }
            100% {
                background-position: 0% 0%;
            }
        }

        body::before,
        body::after {
            content: "";
            position: fixed;
            pointer-events: none;
            inset: 0;
        }

        body::before {
            background:
                radial-gradient(circle at 16% 24%, rgba(125, 211, 252, 0.95) 0 2px, transparent 3px),
                radial-gradient(circle at 31% 42%, rgba(110, 231, 183, 0.9) 0 2px, transparent 3px),
                radial-gradient(circle at 48% 22%, rgba(125, 211, 252, 0.78) 0 2px, transparent 3px),
                radial-gradient(circle at 63% 56%, rgba(94, 234, 212, 0.88) 0 2px, transparent 3px),
                radial-gradient(circle at 78% 34%, rgba(110, 231, 183, 0.72) 0 2px, transparent 3px),
                radial-gradient(circle at 84% 68%, rgba(125, 211, 252, 0.78) 0 2px, transparent 3px),
                repeating-linear-gradient(90deg, rgba(125, 211, 252, 0.08) 0 1px, transparent 1px 120px),
                repeating-linear-gradient(0deg, rgba(110, 231, 183, 0.06) 0 1px, transparent 1px 120px),
                linear-gradient(115deg, transparent 18%, rgba(125, 211, 252, 0.1) 18.4%, transparent 19%),
                linear-gradient(128deg, transparent 41%, rgba(94, 234, 212, 0.12) 41.4%, transparent 42%),
                linear-gradient(102deg, transparent 63%, rgba(110, 231, 183, 0.1) 63.4%, transparent 64%);
            opacity: 0.45;
            animation: background-pan 24s linear infinite;
        }

        body::after {
            inset: -12%;
            background:
                radial-gradient(circle at 22% 26%, rgba(56, 189, 248, 0.18), transparent 20%),
                radial-gradient(circle at 78% 30%, rgba(74, 222, 128, 0.16), transparent 18%),
                radial-gradient(circle at 64% 74%, rgba(45, 212, 191, 0.12), transparent 18%);
            filter: blur(48px);
            opacity: 0.95;
            animation: network-glow 18s var(--ease-out-expo) infinite alternate;
        }

        @keyframes network-glow {
            0% {
                transform: translate3d(-2%, -1%, 0) scale(1);
            }
            100% {
                transform: translate3d(2%, 2%, 0) scale(1.08);
            }
        }
        
        .login-container {
            width: 100%;
            max-width: 920px;
            position: relative;
            z-index: 1;
        }
        
        .login-shell {
            display: grid;
            grid-template-columns: 1fr;
            position: relative;
            isolation: isolate;
            background:
                linear-gradient(145deg, rgba(9, 18, 30, 0.78), rgba(7, 14, 24, 0.56));
            border: 1px solid rgba(148, 163, 184, 0.18);
            border-radius: 28px;
            box-shadow:
                0 30px 80px rgba(1, 6, 14, 0.62),
                inset 0 1px 0 rgba(255, 255, 255, 0.08),
                inset 0 -1px 0 rgba(255, 255, 255, 0.03);
            overflow: hidden;
            backdrop-filter: blur(28px) saturate(140%);
            -webkit-backdrop-filter: blur(28px) saturate(140%);
        }

        .login-shell::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent 22%),
                radial-gradient(circle at top left, rgba(125, 211, 252, 0.12), transparent 30%);
            pointer-events: none;
        }

        .login-shell::after {
            content: "";
            position: absolute;
            inset: 1px;
            border-radius: inherit;
            background:
                linear-gradient(120deg, rgba(255, 255, 255, 0.14), transparent 18%, transparent 82%, rgba(255, 255, 255, 0.06)),
                linear-gradient(180deg, rgba(255, 255, 255, 0.05), transparent 20%);
            opacity: 0.9;
            pointer-events: none;
            z-index: 0;
        }

        .brand-panel {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 22px 22px 18px;
            background:
                linear-gradient(180deg, rgba(6, 14, 24, 0.82) 0%, rgba(8, 18, 29, 0.54) 100%);
            border-bottom: 1px solid rgba(148, 163, 184, 0.12);
        }

        .brand-panel::before {
            content: "";
            position: absolute;
            inset: -28px -20px auto auto;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(125, 211, 252, 0.22), transparent 68%);
        }

        .brand-badge {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 9px 12px;
            border-radius: 999px;
            background:
                linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.05));
            border: 1px solid rgba(255, 255, 255, 0.14);
            box-shadow:
                0 12px 32px rgba(2, 8, 16, 0.22),
                inset 0 1px 0 rgba(255, 255, 255, 0.22),
                inset 0 -1px 0 rgba(255, 255, 255, 0.04);
            margin: 0;
            position: relative;
            z-index: 1;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .brand-badge img {
            width: 32px;
            height: 32px;
            object-fit: contain;
        }

        .brand-badge-text {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .brand-badge-label {
            font-size: 10px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: #93c5fd;
        }

        .brand-badge-name {
            font-size: 13px;
            font-weight: 600;
            color: rgba(248, 250, 252, 0.96);
        }

        .brand-title {
            position: relative;
            z-index: 1;
            max-width: 14ch;
            font-size: 1.5rem;
            line-height: 1.12;
            letter-spacing: -0.03em;
            margin-bottom: 8px;
        }

        .brand-copy {
            position: relative;
            z-index: 1;
            max-width: 30ch;
            font-size: 0.88rem;
            line-height: 1.6;
            color: var(--txt-muted);
        }
        
        .login-card {
            padding: 22px;
            display: flex;
            align-items: center;
            position: relative;
            background:
                linear-gradient(180deg, rgba(6, 14, 24, 0.34), rgba(8, 18, 29, 0.2));
        }
        
        .login-panel {
            width: 100%;
            max-width: 100%;
            padding: 20px;
            position: relative;
            overflow: hidden;
            border-radius: 24px;
            background: linear-gradient(180deg, rgba(8, 17, 28, 0.72), rgba(7, 14, 24, 0.58));
            border: 1px solid rgba(148, 163, 184, 0.18);
            box-shadow:
                0 18px 40px rgba(1, 7, 15, 0.34),
                inset 0 1px 0 rgba(255, 255, 255, 0.08),
                inset 0 -20px 40px rgba(255, 255, 255, 0.02);
            backdrop-filter: blur(24px);
            -webkit-backdrop-filter: blur(24px);
        }

        .login-panel::before {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: inherit;
            background:
                linear-gradient(140deg, rgba(255, 255, 255, 0.16), transparent 22%, transparent 72%, rgba(255, 255, 255, 0.05)),
                radial-gradient(circle at top left, rgba(103, 232, 249, 0.08), transparent 28%);
            pointer-events: none;
            opacity: 0.9;
        }

        .login-panel::after {
            content: "";
            position: absolute;
            inset: 0;
            border-radius: inherit;
            box-shadow:
                inset 0 0 0 1px rgba(255, 255, 255, 0.04),
                inset 0 18px 30px rgba(255, 255, 255, 0.02),
                inset 0 -18px 30px rgba(0, 0, 0, 0.12);
            pointer-events: none;
        }
        
        .login-eyebrow {
            display: inline-block;
            margin-bottom: 10px;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: #67e8f9;
        }

        .login-header {
            margin-bottom: 22px;
            position: relative;
            z-index: 1;
        }
        
        .login-header h1,
        .login-header h2 {
            font-size: 1.55rem;
            line-height: 1.1;
            letter-spacing: -0.03em;
            margin-bottom: 8px;
            color: rgba(248, 250, 252, 0.98);
        }
        
        .login-header p {
            max-width: 26ch;
            color: rgba(203, 213, 225, 0.72);
            font-size: 0.9rem;
            line-height: 1.55;
        }
        
        .form-group {
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        
        .form-label {
            display: block;
            margin-bottom: 8px;
            color: rgba(241, 245, 249, 0.9);
        }
        
        .form-input {
            height: 50px;
            padding: 0 14px;
            color: rgba(248, 250, 252, 0.96);
            background: rgba(15, 23, 42, 0.54);
            border-color: rgba(148, 163, 184, 0.2);
            box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
        }

        .form-input::placeholder {
            color: rgba(148, 163, 184, 0.72);
        }
        
        .form-input:focus {
            background: rgba(15, 23, 42, 0.72);
            border-color: rgba(34, 211, 238, 0.52);
            box-shadow:
                0 0 0 4px rgba(34, 211, 238, 0.12),
                0 8px 20px rgba(8, 47, 73, 0.22);
        }
        
        .form-input.error {
            border-color: #dc2626;
            box-shadow: none;
        }
        
        .form-error {
            margin-top: 8px;
        }

        .form-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            margin: 4px 0 18px;
            position: relative;
            z-index: 1;
        }
        
        .remember-me {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .remember-me input[type="checkbox"] {
            width: 18px;
            height: 18px;
            accent-color: var(--accent);
            border-radius: 5px;
        }
        
        .remember-me label {
            font-size: 0.84rem;
            color: rgba(203, 213, 225, 0.74);
            cursor: pointer;
        }
        
        .login-btn {
            width: 100%;
            min-height: 50px;
            border-radius: 14px;
            background: linear-gradient(135deg, #0f766e 0%, #115e59 52%, #164e63 100%);
            color: var(--txt-inverse);
            font-size: 0.92rem;
            font-weight: 600;
            box-shadow:
                0 16px 32px rgba(8, 47, 73, 0.28),
                inset 0 1px 0 rgba(255, 255, 255, 0.22);
            position: relative;
            z-index: 1;
        }
        
        .login-btn:hover {
            background: linear-gradient(135deg, #115e59 0%, #0f766e 52%, #155e75 100%);
            transform: translateY(-1px);
        }
        
        .login-btn:active {
            transform: translateY(0);
        }
        
        .demo-card {
            margin-top: 16px;
            padding: 14px 16px;
            border-radius: 16px;
            background:
                linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
            border: 1px solid rgba(148, 163, 184, 0.16);
            box-shadow:
                inset 0 1px 0 rgba(255, 255, 255, 0.07),
                inset 0 -1px 0 rgba(255, 255, 255, 0.02);
            position: relative;
            z-index: 1;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }

        .demo-card-label {
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: #67e8f9;
            margin-bottom: 6px;
        }

        .demo-card p {
            font-size: 0.84rem;
            color: rgba(226, 232, 240, 0.84);
            line-height: 1.6;
        }

        .footer-text {
            display: none;
        }

        @media (min-width: 768px) {
            body {
                padding: 24px;
            }

            .brand-panel,
            .login-card {
                padding: 28px;
            }

            .login-panel {
                max-width: 420px;
                margin: 0 auto;
            }

            .brand-title {
                font-size: 1.9rem;
            }
        }

        @media (min-width: 960px) {
            body {
                padding: 28px;
            }

            .login-shell {
                grid-template-columns: minmax(280px, 0.82fr) minmax(0, 1fr);
            }

            .brand-panel {
                padding: 40px;
                border-bottom: none;
                border-right: 1px solid rgba(255, 255, 255, 0.08);
            }

            .login-card {
                padding: 40px;
            }

            .brand-title {
                font-size: 2.5rem;
            }

            .login-header h1,
            .login-header h2 {
                font-size: 1.9rem;
            }
        }