* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Arial', sans-serif;
        }
        
        body {
            background-color: #0c0e18;
            height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            overflow: hidden;
            position: relative;
        }
        
        .background {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
        }
        
        .grid {
            position: absolute;
            width: 200%;
            height: 200%;
            top: -50%;
            left: -50%;
            background-image: 
                radial-gradient(circle at center, rgba(42, 100, 176, 0.1) 0%, transparent 1px),
                radial-gradient(circle at center, rgba(42, 100, 176, 0.1) 0%, transparent 1px);
            background-size: 30px 30px;
            background-position: 0 0, 15px 15px;
            transform: perspective(500px) rotateX(60deg);
            animation: grid-animation 20s linear infinite;
        }
        
        @keyframes grid-animation {
            0% {
                transform: perspective(500px) rotateX(60deg) translateY(0);
            }
            100% {
                transform: perspective(500px) rotateX(60deg) translateY(30px);
            }
        }
        
        .particles {
            position: absolute;
            width: 100%;
            height: 100%;
            z-index: -1;
        }
        
        .particle {
            position: absolute;
            background-color: rgba(59, 130, 246, 0.5);
            border-radius: 50%;
            animation: float-up linear infinite;
        }
        
        @keyframes float-up {
            0% {
                transform: translateY(100vh) scale(0);
                opacity: 0;
            }
            10% {
                opacity: 1;
            }
            90% {
                opacity: 1;
            }
            100% {
                transform: translateY(-20vh) scale(1);
                opacity: 0;
            }
        }
        
        .login-container {
            background: rgba(16, 23, 42, 0.8);
            border-radius: 10px;
            box-shadow: 0 0 40px rgba(0, 119, 255, 0.3);
            width: 400px;
            padding: 40px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(59, 130, 246, 0.2);
            position: relative;
            overflow: hidden;
        }
        
        .login-container::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(
                to right,
                transparent,
                rgba(59, 130, 246, 0.1),
                transparent
            );
            transform: rotate(45deg);
            animation: shine 8s linear infinite;
        }
        
        @keyframes shine {
            0% {
                left: -200%;
            }
            100% {
                left: 200%;
            }
        }
        
        .logo {
            text-align: center;
            margin-bottom: 30px;
        }
        
        .logo h1 {
            color: #fff;
            font-size: 28px;
            letter-spacing: 2px;
            margin-top: 15px;
        }
        
        .logo-icon {
            font-size: 50px;
            color: #3b82f6;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 80px;
            height: 80px;
            border-radius: 50%;
            background: rgba(16, 23, 42, 0.8);
            box-shadow: 0 0 20px rgba(59, 130, 246, 0.5);
            position: relative;
        }
        
        .logo-icon::after {
            content: '';
            position: absolute;
            width: 90%;
            height: 90%;
            border-radius: 50%;
            border: 2px solid rgba(59, 130, 246, 0.3);
            animation: pulse 2s infinite;
        }
        
        @keyframes pulse {
            0% {
                transform: scale(0.95);
                opacity: 1;
            }
            70% {
                transform: scale(1.1);
                opacity: 0;
            }
            100% {
                transform: scale(0.95);
                opacity: 0;
            }
        }
        
        .form-group {
            margin-bottom: 25px;
            position: relative;
        }
        
        .form-group label {
            color: #a0aec0;
            font-size: 14px;
            margin-bottom: 8px;
            display: block;
        }
        
        .form-control {
            width: 100%;
            padding: 12px 15px;
            background: rgba(15, 23, 42, 0.5);
            border: 1px solid rgba(59, 130, 246, 0.2);
            border-radius: 5px;
            color: #fff;
            font-size: 16px;
            transition: all 0.3s;
        }
        
        .form-control:focus {
            outline: none;
            border-color: #3b82f6;
            box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.3);
        }
        
        .form-control::placeholder {
            color: #4b5563;
        }
        
        .btn {
            width: 100%;
            padding: 12px;
            background: linear-gradient(90deg, #3b82f6, #2563eb);
            color: #fff;
            border: none;
            border-radius: 5px;
            font-size: 16px;
            cursor: pointer;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }
        
        .btn:hover {
            background: linear-gradient(90deg, #2563eb, #1d4ed8);
            box-shadow: 0 0 15px rgba(59, 130, 246, 0.5);
        }
        
        .btn::after {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: linear-gradient(
                to right,
                transparent,
                rgba(255, 255, 255, 0.1),
                transparent
            );
            transform: rotate(45deg);
            animation: button-shine 3s linear infinite;
        }
        
        @keyframes button-shine {
            0% {
                left: -200%;
            }
            100% {
                left: 200%;
            }
        }
        
        .system-info {
            margin-top: 20px;
            color: #64748b;
            font-size: 12px;
            text-align: center;
        }
        
        .server-status {
            display: flex;
            justify-content: space-between;
            margin-top: 10px;
            font-size: 12px;
        }
        
        .status-item {
            display: flex;
            align-items: center;
        }
        
        .status-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin-right: 5px;
        }
        
        .status-online {
            background-color: #10b981;
            box-shadow: 0 0 5px #10b981;
        }
        
        .status-active {
            background-color: #3b82f6;
            box-shadow: 0 0 5px #3b82f6;
        }
        
        .status-text {
            color: #94a3b8;
        }
        
        .error-message {
            color: #ef4444;
            margin-top: 20px;
            text-align: center;
            font-size: 14px;
            padding: 10px;
            background: rgba(239, 68, 68, 0.1);
            border: 1px solid rgba(239, 68, 68, 0.2);
            border-radius: 5px;
            display: none;
        }
        
        .form-options {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin: -8px 0 20px;
            font-size: 13px;
        }

        .checkbox-label {
            display: flex;
            align-items: center;
            color: #a0aec0;
            cursor: pointer;
            user-select: none;
        }

        .checkbox-label input {
            margin-right: 6px;
            accent-color: #3b82f6;
        }

        .forgot-link {
            color: #3b82f6;
            text-decoration: none;
            transition: color 0.2s;
        }

        .forgot-link:hover {
            color: #60a5fa;
            text-decoration: underline;
        }

        .signup {
            margin-top: 18px;
            text-align: center;
            font-size: 13px;
            color: #94a3b8;
        }

        .signup a {
            color: #3b82f6;
            text-decoration: none;
        }

        .signup a:hover {
            text-decoration: underline;
        }

        .footer {
            margin-top: 20px;
            padding-top: 16px;
            border-top: 1px solid rgba(59, 130, 246, 0.12);
            text-align: center;
            color: #475569;
            font-size: 11px;
            line-height: 1.6;
        }

        .not-found {
            text-align: center;
            color: #e2e8f0;
        }

        .not-found h1 {
            font-size: 72px;
            letter-spacing: 4px;
            color: #3b82f6;
            margin-bottom: 12px;
        }

        .not-found p {
            color: #94a3b8;
            font-size: 16px;
            margin-bottom: 24px;
        }

        .not-found a {
            display: inline-block;
            padding: 10px 22px;
            background: linear-gradient(90deg, #3b82f6, #2563eb);
            color: #fff;
            text-decoration: none;
            border-radius: 5px;
            font-size: 14px;
        }

        .not-found a:hover {
            background: linear-gradient(90deg, #2563eb, #1d4ed8);
        }

        @media (max-width: 500px) {
            .login-container {
                width: 90%;
                padding: 20px;
            }
            .not-found h1 {
                font-size: 48px;
            }
        }